WO2018058191A1

WO2018058191A1 - A line release assembly, a connecting mechanism and methods of use thereof

Info

Publication number: WO2018058191A1
Application number: PCT/AU2017/051063
Authority: WO
Inventors: Jaiden John Maclean; Byron Leal; Craig Roughan
Original assignee: Drone Angler Pty Ltd
Priority date: 2016-09-28
Filing date: 2017-09-28
Publication date: 2018-04-05

Abstract

The present invention concerns a line release assembly and a connecting mechanism for use with an unmanned aerial vehicle ("UAV"), a UAV including the line release assembly and methods of use thereof. The line release assembly including a pair of opposed clamping members configured to be carried by the UAV, said clamping members configured to clamp against one another and releasably hold a portion of a line and release the portion when tension in the line exceeds a pre-set tension.

Description

A LINE RELEASE ASSEMBLY, A CONNECTING MECHANISM AND METHODS OF USE

THEREOF

TECHNICAL FIELD

[0001 ] The present invention relates to a line release assembly and a connecting mechanism for use with an unmanned aerial vehicle ("UAV"), a UAV including the line release assembly and methods of use thereof.

BACKGROUND

[0002] An unmanned aerial vehicle ("UAV"), also commonly known as a drone, is an aircraft without a human pilot aboard. Although originally developed for military applications, civilian UAVs now vastly outnumber military UAVs and are being increasingly used for a number of commercial applications.

[0003] For example, UAVs have been used in drone journalism, cyclone hunting, 3D landscape mapping, nature protection, farming, goods delivery and search and rescue operations.

[0004] Recently, UAVs have been used for fishing, namely beach fishing. In such an application, a UAV is typically used to fly and release a fishing line out past the breakers and the whitewash thereby allowing an angler to access fish usually only accessible by boat.

[0005] Despite the above, a problem in general with using a UAV to carry a load is that the added weight can adversely affect the stability and manoeuvrability of the UAV in flight, e.g., if the load is unevenly mounted to the UAV or becomes uneven during flight. This is particularly undesirable when the UAV is being flown over a body of water.

[0006] Another problem with using UAVs for such applications is that a load carried by a UAV or an attachment for carrying the load may interfere with other on-board equipment of the UAV, such as, e.g., an on-board camera or stability sensors (i.e., the latter being for assisting in maintaining position and height at low altitude). For example, a load carried by a UAV may partially block an on-board camera's field of view and/or partially interfere with the UAVs stability sensors and thus adversely affect operation of the UAV.

[0007] A further problem with using a UAV for fishing is that the structure of the UAV provides a plurality of possible tangle or catch points for tangling or catching a fishing line being carried by the UAV. Indeed, in a best case scenario, fishing line tangling or catching with a UAV may simply prevent the UAV from being able to release the fishing line. In a worst case scenario, the tangle or catch may result in the UAV crashing. SUMMARY OF INVENTION

[0008] Embodiments of the present invention provide a line release assembly and a connecting mechanism for use with an unmanned aerial vehicle ("UAV"), a UAV including the line release assembly and methods of use thereof, which may minimize or overcome at least one of the problems mentioned above, or which may provide the public with a useful or commercial choice.

[0009] According to a first aspect of the present invention, there is provided a line release assembly for use with or when used with a UAV, said line release assembly including:

a pair of opposed clamping members configured to be carried by the UAV, said clamping members configured to clamp against one another and releasably hold a portion of a line and release the portion of line when tension in the line exceeds a pre-set tension.

[0010] According to a second aspect of the present invention, there is provided a connecting mechanism for connecting or when used for connecting an attachment to a UAV, said connecting mechanism including:

a first part of the connecting mechanism movably coupled with the attachment to be connected to the UAV; and

a second part of the connecting mechanism movably coupled to at least one arm configured to be coupled to at least a portion of the UAV;

wherein said first part and said second part are connectable such that the attachment is connected to and carried by the UAV in a position which minimizes interference to at least one of manoeuvrability of the UAV, a field of view of at least one camera mounted to an underside of the UAV and at least one stability sensor mounted to the underside of the UAV, if present.

[001 1 ] According to a third aspect of the present invention, there is provided a line release assembly for connecting to or when connected to a connecting mechanism associated with a UAV, said line release assembly including:

a pair of opposed clamping members movably coupled to a first part of the connecting mechanism connectable to a second part of the connecting mechanism associated with the UAV so that the line release mechanism is connected to and carried by the UAV, said clamping members configured to clamp against one another and releasably hold a portion of a line and release the portion of line when tension in the line exceeds a pre-set tension.

[0012] According to a fourth aspect of the present invention, there is provided a UAV for releasing a line including: a line release assembly including:

a pair of opposed clamping members configured to be carried by the UAV, said clamping members configured to clamp against one another and releasably hold a portion of the line and release the portion of line when tension in the line exceeds a pre-set tension.

[0013] Advantageously, the line release assembly of the present invention allows a portion of a line, such as, e.g., a fishing line, to be stably and releasably carried by a UAV with minimal risk of the line tangling with the UAV. The ability to set the line release assembly to release the portion of line when tension in the line exceeds a pre-set tension ensures the line is released in a fail-safe manner. Moreover, the line release assembly is carried by the UAV in a manner which minimizes interference with the manoeuvrability of the UAV, a field of view of at least one camera mounted to an underside of the UAV and at least one stability sensor mounted to the underside of the UAV, if present.

[0014] As used herein, the term "Unmanned Aerial Vehicle" or "UAV" may include any unmanned aircraft without a human pilot aboard. The UAV may be operated with varying degrees of autonomy ranging from fully autonomous to intermittently autonomous or may be remotely controlled by a human operator.

[0015] The UAV may be a fixed-wing aircraft or a rotary-wing aircraft, preferably the latter. The UAV may preferably be in the form of a rotary-wing aircraft with at least two rotors, at least four rotors, at least six rotors, at least eight rotors, at least 10 rotors, at least 12 rotors, at least 14 rotors, at least 16 rotors, at least 18 rotors or at least 20 rotors.

[0016] In preferred embodiments, the UAV may be a rotary-wing aircraft with at least four rotors, at least six rotors, at least eight rotors, at least 10 rotors or at least 12 rotors.

[0017] Generally, the UAV may include a central body including at least four arms extending radially outward from the central body in a substantially horizontal orientation. Each arm may typically include a motor unit and associated rotor located at or near an outer or distal end of the arm.

[0018] The UAV may include at least one pair of legs extending downwards from opposed sides of the body to support the UAV on a support surface.

[0019] In some embodiments, each leg may further include at least one foot extending from an outer or distal end of the leg for resting on the support surface. The at least one foot may typically extend in substantially horizontal orientation from the outer or distal end of the leg. [0020] In other embodiments, the UAV may include at least two pairs of legs, and adjacently positioned legs on a same side of the UAV may further include at least one foot extending between the outer or distal ends of the legs. The at least one foot may typically extend between the legs in a substantially horizontal orientation.

[0021 ] In some embodiments, the UAV may include at least one camera mounted to an underside of the UAV.

[0022] In some embodiments, the UAV may include at least one stability sensor (also known as a visual positioning system) mounted or located on an underside of the body of the UAV to assist in maintaining position and height at low altitude. The at least one stability sensor may typically include one or more sensors and cameras, preferably one or more sonar sensors and a monocular camera.

[0023] As used herein, the term "pre-set tension" refers to a maximum amount of tension in a line being held by the line release assembly before the line is released from the line release assembly. The pre-set tension may typically directly correlate with an amount of inward pressure being applied by the opposed clamping members of the line release assembly when clamping against one another. For example, a high inward pressure may correspond with a high pre-set tension.

[0024] As used herein, the term "attachment" may refer to any unit, object or assembly to be attached to the UAV with the connecting mechanism of the second aspect of the invention. For example, the attachment may include a camera. Typically, the attachment may include the line release assembly of the present invention.

[0025] The line release assembly may be of any suitable size, shape and construction and formed from any suitable material or materials for enabling the line release assembly to be used with a UAV and releasably hold a line at the pre-set tension.

[0026] Generally, the line release assembly may be carried underneath a UAV so as to minimise the risk of a line held by the line release assembly becoming tangled with the UAV. Preferably, the line release assembly may be carried by the UAV in a position that minimizes interference to at least one of manoeuvrability of the UAV, a field of view of at least one camera mounted to an underside of the UAV and at least one stability sensor mounted to the underside of the UAV, if present.

[0027] The line release assembly may be formed from a durable and lightweight material or materials so as not to overly burden the UAV. For example, the line release assembly may be formed from plastic, metal and/or rubber material or materials, preferably plastic and/or rubber material or materials.

[0028] As indicated, the line release assembly may include a pair of opposed clamping members configured to clamp against one another, releasably hold a portion of a line, and release the portion of line when tension in the line exceeds the pre-set tension. Typically, the opposed clamping members may be configured to hold the portion of line up to the pre-set tension, and release the portion when tension in the line exceeds the pre-set tension.

[0029] The line may be of any suitable form. For example, the line may be a fishing line, a string, a thread, a cord, a wire, a cable, a chain or a rope, for example. Typically, the line may be a fishing line or rope.

[0030] The line release assembly may also include an actuating mechanism for moving the clamping members together and apart. The actuating mechanism may preferably be adjustable to enable the inward pressure of the clamping members when clamping together to be adjusted and therefore the pre-set tension of the line release assembly to be adjusted.

[0031 ] Any suitable type of mechanism may be used. The actuating mechanism may be manually actuated or by using a drive. Movement may be linear, although non-linear movement such as rotary movement is also envisaged.

[0032] For example, if manually actuated, the actuating mechanism may include one or more of a lever, ram, operable handle, sliding arrangement (e.g., one or more shafts/columns extending through one or more apertures in the clamping members, or tongue in groove), hinged arrangement or pivoting arrangement for moving the clamping members together and apart. The actuating mechanism may include one or more biasing mechanisms or members so that movement together works against the force of the biasing mechanism or member, so that the clamping members move apart under the force of the biasing mechanism or member. The biasing mechanism or member may be one or more springs, such as coil or leaf springs, for example. In another example, the biasing mechanism or member may be a spacer or the like positioned at least partially between the clamping members. Of course, a person skilled in the art will appreciate that other types of biasing mechanisms or members such as magnets or magnetized elements and the like may be used.

[0033] If using a drive, the drive may be a hydraulic or pneumatic ram, or an electric motor for moving the clamping members together and apart. Again, movement may be linear, although non-linear movement, such as rotary movement, is also envisaged. [0034] The pair of opposed clamping members may be of any size, shape and construction suitably adapted to hold the portion of line when clamped against one another and release the portion of line when tension in the line exceeds the pre-set tension. Preferably, the actuating mechanism is operably connected to the clamping members to move the members together and apart.

[0035] Typically, the clamping members may include a pair of opposed plates configured to move together and apart using the actuating mechanism.

[0036] The plates may be of like size and shape or not, preferably like. In this regard, each plate may be substantially rectangular, oblong, circular, ellipsoidal or oval in shape, preferably substantially rectangular in shape. Each plate may be of unitary construction or may be formed from two or more plate pieces.

[0037] Each plate may have two opposed surfaces including an inner abutting surface and an opposed outer surface. The opposed surfaces may be substantially parallel to one another and interconnected by opposing edges including an upper edge, an opposed lower edge and opposed side edges.

[0038] In some embodiments, each plate may further include a liner or coating at least on a portion of the abutting surface to at least partially assist in releasably holding the portion of line. The liner or coating may be of any suitable size, shape and construction and formed from any suitable material.

[0039] Typically, the liner or coating may be formed from a resiliently deformable material or materials, such as, e.g., rubber or soft plastic material or materials.

[0040] In other embodiments, each plate may further include a pad extending at least partially across the abutting surface of the plate to at least partially assist in releasably holding the portion of line. The pad on each plate may of the same size or not, preferably the same size.

[0041 ] The pad may typically be formed of a resiliently deformable material or materials, such as, e.g., rubber or soft plastic material or materials.

[0042] Generally, the clamping members extend at least partially beneath the UAV in substantially parallel planes and may be moved together and apart using a linear actuating mechanism. Advantageously, by positioning the clamping members in substantially parallel vertical planes, the line when released is released via the opposed lower edges of the clamping members thereby reducing the chance of the line catching or tangling on a part of the UAV or the line release assembly. [0043] The clamping members of the line release assembly may be carried underneath the UAV by any suitable means that allow the clamping members to be held in substantially parallel planes and be moved together and apart using the linear actuating mechanism. Typically, the line release assembly may be attached to the UAV. For example, in one embodiment, the line release assembly may be attached to an upper portion of the UAV and suspended beneath the UAV. In another embodiment, the line release assembly may be attached to an underside of the UAV, preferably a part of at least one leg of the UAV.

[0044] The line release assembly may be permanently or detachably attached to the UAV, preferably detachably. The line release assembly may be directly or indirectly attached to the UAV. The line release assembly may be adjustably attached to the UAV such that the position of the line release assembly and/or the distance that the line release assembly is carried beneath the underside of the UAV may be adjusted.

[0045] In some embodiments, the line release assembly may be fastened to a part of the UAV by one or more fasteners, such as, e.g., one or more mechanical fasteners and/or one or more chemical fasteners.

[0046] In one such embodiment, an upper portion or part of the line release assembly may be attached to an underside of the UAV by one or more chemical fasteners. For example, the one or more chemical fasteners including a wet adhesive, a dry adhesive and/or double-sided adhesive tape may extend between an upper portion or part of the line release assembly and the underside of the UAV.

[0047] In another embodiment, an upper portion or part of the line release assembly may be attached to an underside of the UAV by one or more mechanical fasteners. For example, one or more threaded fasteners may extend through respective openings defined in the upper portion or part of the line release assembly and within openings defined in the underside of the UAV.

[0048] In some embodiments, the line release assembly may be attached to the UAV by way of one or more loops, straps or bands. For example, a loop, strap or band may extend from a location at or near an upper portion of the line release assembly and be coupled to, looped around or hooked over a portion or part of the UAV, preferably a portion or part of at least one leg of the UAV.

[0049] In preferred embodiments, the line release assembly may be attached to the UAV by a connecting mechanism or part of a connecting mechanism. The connecting mechanism may include a first part associated with the line release assembly and a second part connectable to the first part and associated with the UAV.

[0050] The parts of the connecting mechanism may respectively include mateable male and female portions that couple together, including threaded connections, interference fit connections or bayonet-type connections, for example. The second part of the connecting mechanism associated with the UAV may include a male formation configured to be inserted into or coupled with a female formation of the first part of the connecting mechanism associated with the line release assembly. Conversely, the second part of the connecting mechanism may include a female formation configured to at least partially receive or be coupled with a male formation of the first part of the connecting mechanism.

[0051 ] The first part of the connecting mechanism may typically include a lower portion for coupling to the clamping members of the line release assembly and an upper portion for connecting with the second part of the connecting mechanism.

[0052] In some embodiments, the upper and lower portions of the first part of the connecting mechanism may be rotatably coupled to one another such that, in use, the lower portion may rotate relative to the upper portion.

[0053] Advantageously, free rotation of the lower portion relative to the upper portion of the first part of the connecting mechanism may at least partially prevent tangling of a line carried by the line release assembly.

[0054] The upper and lower portions of the first part of the connecting mechanism may be rotatably coupled together by any suitable means known in the art.

[0055] For example, the portions may be rotatably coupled by axially overlapping coupling parts coupled together by an outer sleeve or by a retaining portion of one coupling part received and retained in the other coupling part.

[0056] The clamping members of the line release assembly may preferably be movably coupled to the lower portion of the first part of the connecting mechanism, more preferably pivotally coupled.

[0057] For example, in one such embodiment, at least one of the clamping members may include a bearing located at or near the upper edge of the clamping member to be pivotally coupled to the lower portion of the first part of the connecting mechanism. The bearing may or may not include a polymer bushing. The bearing may be pinned to the lower portion of the first part of the connecting mechanism with a pivot pin. [0058] In another such embodiment, the lower portion of the first part of the connecting mechanism may include a connecting portion having a bearing to be pivotally coupled to at least one of the clamping members. Likewise, the at least one clamping member may include a pivot pin for pinning the bearing to the clamping member. Again, the bearing may or may not include a polymer bushing.

[0059] In yet another such embodiment, at least one of the clamping members may include a protruding connecting member having a central bore therethrough protruding from an upper edge of the clamping member. Likewise, the lower portion of the first part of the connecting mechanism may include a corresponding at least one protruding connecting member having a central bore therethrough. The protruding connecting member of the clamping member and the at least one protruding connecting member of the first part of the connecting mechanism may be pinned together by a pivot pin received through the central bores when co-aligned.

[0060] In a preferred embodiment, the clamping members may each include a protruding connecting member having a central bore therethrough protruding from an upper edge of each clamping member. Again, the lower portion of the first part of the connecting mechanism may likewise include at least one protruding connecting member having a central bore therethrough. The at least one protruding connecting member of the first part of the connecting mechanism may be configured to be at least partially received between the connecting members extending from the clamping members and be pinned together by a pivot pin received through the central bores when co-aligned.

[0061 ] In the embodiments described above, the clamping members may be pivotable relative to the first part of the connecting mechanism about a longitudinal axis of the pivot pin, preferably in a substantially vertical plane.

[0062] Advantageously, pivotally coupling the clamping members to the first part of the connecting mechanism may allow the line release assembly to pivot out of the way when the UAV is landed on a support surface, for example.

[0063] As indicated above, the clamping members may be brought together and moved apart in a linear movement by the linear actuating mechanism. The linear actuating mechanism may be of any suitable size, shape and form.

[0064] For example, in one embodiment, the linear actuating mechanism may include one or more hinges, one or more levers and one or more biasing mechanisms or members. The clamping members may be hinged together like a pair of jaws, and the levers may enable the clamping members to be moved together against the force of the biasing mechanism or member. [0065] In another embodiment, the linear actuating mechanism may include a sliding arrangement, one or more levers or rams and one or more biasing mechanisms or members. The clamping members may be slidably mounted to one another and the clamping members may be moved together using the rams or levers against the force of the biasing mechanism or member.

[0066] In yet another embodiment, the actuating mechanism may include a sliding arrangement including a shaft, one or more levers, rams or cams, and one or more biasing mechanisms or members. The shaft may extend through the clamping members, and the clamping members may be slidably mounted to the shaft for movement along the shaft, and may be brought together using the levers, rams or cams against the force of the biasing mechanism or member. When not under load, the biasing mechanism or member causes the clamping members to move away/separate from one another.

[0067] In preferred embodiments, the actuating mechanism may include a sliding arrangement including a central shaft, at least one cam and a biasing mechanism or member.

[0068] The shaft may extend through a central portion of the clamping members, and the clamping members may be slidably mounted to the shaft for movement along the shaft. The clamping members may further be pivotally coupled to the first part of the connecting mechanism as described above, and the biasing mechanism may be in the form of the at least one protruding connecting member of the first part of the connecting mechanism positioned between the clamping members.

[0069] The clamping members may be brought together using the at least one cam against the force of the biasing mechanism or member, typically by rotating or pivoting the at least one cam relative to the central shaft.

[0070] When not under load, the at least one protruding connecting member of the first part of the connecting mechanism causes the clamping members to move away/separate from one another.

[0071 ] In such embodiments, the central shaft may extend through both clamping members, and may preferably extend past the outer surfaces of the clamping members. The shaft may include a first end and an opposed second end.

[0072] The first end of the shaft may be operatively associated with the at least one cam, preferably pivotally coupled such that the cam may rotate or pivot relative to the shaft. The second end may be fastened to or against an adjacent clamping member. [0073] Typically, the second end may be fastened against the adjacent clamping member, preferably adjustably such that the inward clamping pressure of the clamping members is adjustable.

[0074] For example, in some embodiments, the second end may be threaded and be threadingly connected to a threaded fastener, such as, e.g., a nut, which abuts against the outer surface of the adjacent clamping member. The threaded fastener may include a grip to facilitate a user in rotating the nut to adjust the inward clamping pressure and the pre-set tension.

[0075] Similarly, the at least one cam may typically include a handle portion to assist user in rotating or pivoting the cam relative to the central shaft.

[0076] As indicated above, the upper portion of the first part of the connecting mechanism is configured to connect with the second part of the connecting mechanism associated with the UAV.

[0077] The second part of the connecting mechanism, like the first part, may typically include a lower portion configured to connect with the upper portion of the first part of the connecting mechanism and an upper portion configured to be connected to a portion of the UAV.

[0078] In some embodiments, the upper and lower portions of the second part of the connecting mechanism may be rotatably coupled to one another such that, in use, the lower portion may rotate relative to the upper portion.

[0079] Advantageously, like with the first part, free rotation of the lower portion relative to the upper portion of the second part of the connecting mechanism may at least partially prevent tangling of a line carried by the line release assembly.

[0080] The upper and lower portions of the second part of the connecting mechanism may be rotatably coupled together by any suitable means known in the art.

[0081 ] For example, the portions may be rotatably coupled by axially overlapping coupling parts coupled together by an outer sleeve or by a retaining portion of one coupling part received and retained in the other coupling part.

[0082] The upper portion of the first part of the connecting mechanism may typically include a male formation configured to be at least partially inserted into or coupled with a female formation of the lower portion of the second part of the connecting mechanism, preferably by a bayonet-type connection. [0083] The female formation of the lower portion of the second part of the connecting mechanism may include an aperture and at least two inwardly extending projections that partially extend around a peripheral edge of the aperture.

[0084] The male formation of the upper portion of the first part of the connection mechanism may include a base portion configured for attachment to the female portion of the second part of the connecting mechanism. The male formation may further include a projection extending from the base portion with an end portion configured to be received in the aperture of the female formation and engage with the at least two inwardly extending projections of the female formation.

[0085] The first and second parts of the connecting mechanism may be connected together by aligning and inserting the end portion of the male formation into the aperture of the female formation and then rotating the male formation relative to the female formation such that the end portions engage with the at least two inwardly extending projections of the female formation. Engagement of the end portions of the male formation with the at least two inwardly extending projections of the female formation prevents translational and lateral movement of the first part of the connecting mechanism relative to the second part.

[0086] The projection of the male formation may typically be in the form of cylindrical post with the end portion located at or near a free end of the post furthest from the base portion.

[0087] The end portion may be of any suitable configuration to engage with the at least two inwardly extending projections of the female formation when inserted into the aperture of the female formation and rotated. The end portion may typically include at least two lateral extensions extending from the post at or near the free end of the post, preferably from opposite sides of the post.

[0088] In some embodiments, the base portion of the male formation of the first part of the connecting mechanism may include a collared grip to assist a user in handling and rotating the first part of the connecting mechanism relative to the second part of the connecting mechanism. The collared grip may typically extend at least partially around a periphery of the base portion.

[0089] In some embodiments, the end portion may include one or more resilient projections extending outwardly from the free end or end portion of the projection of the male formation. An inner surface of the aperture of the female formation may include one or more corresponding indentations that engage with or at least partially receive the one or more resilient projections when the male and female formations are coupled. Advantageously, engagement of the one or more resilient projections with the one or more corresponding indentations may at least partially prevent inadvertent disengagement of the first part of the connecting mechanism from the second part by at least partially inhibiting or impeding rotation of the male formation relative to the female formation.

[0090] In an alternative embodiment, the end portion may include one or more indentations defined in the free end or end portion of the projection of the male formation. The inner surface of the aperture of the female formation may include one or more corresponding resilient projections configured to be at least partially received in the one or more indentations when the male and female formations are coupled. Again, engagement of the projections with the indentations may advantageously at least partially prevent inadvertent disengagement of the first part of the connecting mechanism from the second part by at least partially inhibiting or impeding rotation of the male formation relative to the female formation.

[0091 ] As indicated above, the second part of the connecting mechanism is movably coupled to the at least one arm, which is coupled to at least a portion of the UAV, preferably at least a portion of a leg of the UAV.

[0092] The at least one arm has opposed ends, including a first end and an opposed second end. The first end may be coupled to the at least a portion of a leg of the UAV. The second end of the arm may be moveably coupled to the second part of the connecting mechanism, preferably rotatably coupled.

[0093] The at least one arm may be of any size, shape and construction suitably adapted to connect the line release assembly to the UAV. Preferably, the at least one arm may be configured to position the line release assembly relative to the UAV such that it is carried in a position that minimizes interference to at least one of manoeuvrability of the UAV, a field of view of at least one camera mounted to an underside of the UAV and at least one stability sensor mounted to the underside of the UAV, if present.

[0094] The at least one arm may be of tubular or solid construction, typically tubular with a substantially circular cross-section. The at least one arm may be formed from lightweight plastic or metal material or materials. In some embodiments, a wall of the at least one arm may include one or more cut outs or windows to at least partially reduce the weight of the arm. The at least one arm may be of unitary construction or may be formed from two or more arm pieces.

[0095] Typically, the at least one arm may be an elongate structure extending longitudinally between the opposed ends. The at least one arm may be linear, curved or a combination thereof. Preferably, the arm may include one or more bends. [0096] In some embodiments, at least one arm may include at least one bend such that the first and second ends are offset relative to one another, preferably such that the second end is positioned higher relative to the first end. Advantageously, this offset may assist in suitably positioning the line release assembly relative to the portion of the leg of the UAV to which the first end is coupled. For example, the line release assembly may be suitably positioned to minimize interference with a field of view of at least one camera mounted to an underside of the UAV and/or at least one stability sensor mounted to the underside of the UAV, if present.

[0097] The first end of the arm may be coupled to the at least a portion of a leg of the UAV by any suitable means.

[0098] For example, the first end of the arm may be permanently or detachably coupled to the portion of the leg of the UAV, preferably detachably. The first end of the arm may be directly or indirectly coupled to the portion of the leg of the UAV.

[0099] In some embodiments, the first end of the arm may be fastened to the portion of the leg of the UAV by one or more fasteners, such as, e.g., one or more mechanical fasteners and/or one or more chemical fasteners, e.g., as described previously.

[00100] In other embodiments, the first end of the arm may be attached to the UAV by way of one or more loops, straps or bands. For example, a loop, strap or band may extend from a location at or near the first end of the arm and be coupled to, looped around or hooked over the portion of the leg of the UAV.

[00101 ] In yet other embodiments, the first end of the arm may be attached to the UAV by a connecting mechanism or part of a connecting mechanism. For example, a first part of the connecting mechanism associated with the first end of the arm may mate with or engage with a second part of the connecting mechanism associated with the portion of the leg of the UAV.

[00102] The connecting mechanism may include mateable male and female portions that couple together, included threaded connections, interference fit connections or bayonet-type connections, for example, as described previously.

[00103] In preferred embodiments, the first end of the arm may include a leg clamp having two clamping members configured to together at least partially clamp about the portion of the leg of the UAV. The leg clamp may include an actuating mechanism in the form of a threaded fastener extending through both clamping members and configured to bring the clamping members together and apart when turned. The threaded fastener may preferably include a head for turning the fastener. [00104] The leg clamp may be movably coupled to the first end of the arm, preferably rotatably coupled such that the leg clamp may be rotated relative to the arm to clamp to vertical or horizontal portions of the leg, for example.

[00105] The leg clamp may be rotatably coupled to the first end of the arm in any suitable way.

[00106] Generally, a portion of the leg clamp may be at least partially received in the first end of the arm. The portion received within the first end of the arm may be fastened in place by one or more mechanical fasteners, such as, e.g., a threaded fastener received in an opening in a wall of the arm at or near the first end for fastening the portion of the leg clamp in place.

[00107] As indicated above, the second end of the arm may preferably be rotatably coupled to the upper portion of the second part of the connecting mechanism. The second end may be directly or indirectly rotatably coupled to the second part of the connecting mechanism, preferably the latter.

[00108] For example, in some embodiments, the second end of the arm may be coupled to the upper portion of the second part of the connecting mechanism by a spacer configured to be at least partially received in the second end of the arm. Advantageously, the spacer allows a length of the arm to be adjusted to optimally position the line release assembly relative to the UAV.

[00109] The spacer has opposed ends, including a first end portion and an opposed second end portion, for connecting to the second end of the arm and the upper portion of the second part of the connecting mechanism. The spacer typically has a similar profile shape as the arm, but a smaller diameter or an insertable portion with a smaller diameter than the arm to allow the spacer to be at least partially inserted into the second end of the arm.

[001 10] As with the first end of the arm, a first end portion of the spacer may be at least partially received in the second end of the arm and secured in place by one or more mechanical fasteners, such as, e.g., a threaded fastener received in an opening in a wall of the arm at or near the second end for fastening the spacer in place.

[001 1 1 ] The opposed second end portion of the spacer is rotatably coupled to the upper portion of the second part of the connecting mechanism. The second end portion may be rotatably coupled to the second part of the connecting mechanism in any suitable that allows the second part of the connecting mechanism to be rotated relative to the arm, preferably about a longitudinal axis of the arm. [001 12] For example, in some embodiments, the opposed second end portion of the spacer may be at least partially received in a corresponding opening defined in the upper portion of the second part of the connecting mechanism. As with the first end portion, the second end portion may be secured in place by one or more mechanical fasteners, such as, e.g., a threaded fastener received in an opening in wall of the corresponding opening for fastening the spacer in place.

[001 13] Advantageously, rotatably coupling the arm to the upper portion of the second part of the connecting mechanism may, together with the pivotally coupling of the line release assembly to the first part of the connecting mechanism, facilitate in allowing the line release assembly (or any other attachment connected to the UAV by the connecting mechanism) to pivot out of the way when the UAV lands on a support surface.

[001 14] In some embodiments, the connecting mechanism may further include a pivot stop to at least partially prevent the line release assembly (or any other attachment connected to the UAV by the connecting mechanism) from pivoting into at least one camera or stability sensor mounted or located on an underside of the UAV. Typically, the pivot stop is configured to prevent the line release assembly from pivoting into the camera or stability sensor when the UAV lands on a support surface and the line release assembly pivots out of the way.

[001 15] The pivot stop may be of any suitable size, shape and constructed and may be positioned at any suitable location on the connecting mechanism.

[001 16] Generally, the pivot stop may be located on a side of the connecting mechanism nearest the at least one camera or stability sensor mounted to the UAV. Typically, the pivot stop may extend outwardly from the upper portion of the second part of the connecting mechanism to at least partially abut against a portion of the line release assembly when the line release assembly pivots towards the at least one camera or stability sensor.

[001 17] In preferred embodiments, the pivot stop may have a substantially L-shaped profile with a first part extending outwardly from the upper portion of the second part of the connecting mechanism in a substantially horizontal orientation. A second part of the pivot stop may extend towards the line release assembly from an outer end of the first part, preferably in a substantially perpendicular orientation relative to the first part.

[001 18] In some embodiments, the second part of the connecting mechanism may be coupled to the UAV by more than one arm. For example, the second part of the connecting mechanism may be coupled by at least two arms, at least three arms or at least four arms. Each arm may typically be coupled to at least a portion of a leg of the UAV. [001 19] In preferred embodiments, the second part of the connecting mechanism may be coupled to the UAV by at least two arms. Each arm may be rotatably coupled at one end to the upper portion of the second part of the connecting mechanism and coupled at the other end to a portion of a leg of the UAV.

[00120] Preferably, the at least two arms may be coupled to opposed legs of the UAV such that the second part of the connecting mechanism and thereby the line release assembly may be positioned between the opposed legs of the UAV.

[00121 ] According to a fifth aspect of the present invention, there is provided a method of connecting an attachment to a UAV with the connecting mechanism of the second aspect, said method including:

aligning the first part of the connecting mechanism associated with the attachment relative to the second part of the connecting mechanism coupled to the UAV; and

connecting the first part and the second part together so that the attachment is connected to and carried by the UAV.

[00122] The method may include one or more features or characteristics of the connecting mechanism, the line release assembly and/or the UAV as hereinbefore described.

[00123] As indicated above, the attachment may be any unit, object or assembly to be attached to the UAV with the connecting mechanism. For example, the attachment may include a camera. Preferably, the attachment may include the line release assembly of the present invention.

[00124] The aligning may include aligning the male formation of the first part of the connecting mechanism relative to the female formation of the second part of the connecting mechanism. Preferably, the aligning may include aligning the end portion of the projection of the male formation of the first part of the connecting mechanism relative to the at least two inwardly extending projections that partially extend around the peripheral edge of the aperture of the female formation of the second part of the connecting mechanism.

[00125] Once aligned, the method may further include coupling the male formation with the female formation. The coupling may include at least partially inserting the male formation into the female formation.

[00126] Specifically, the coupling may include inserting the end portion and at least part of the projection of the male formation into the aperture of the female formation. Insertion of the end portion and at least part of the projection into the aperture may prevent lateral movement of the first part of the connecting mechanism relative to the second part.

[00127] The connecting may include rotating the first part of the connecting mechanism relative to the second part. Rotation of the first part of the connecting mechanism relative to the second part engages the end portion of the male formation of the first part with the at least two inwardly extending projections of the female formation of the second part to prevent translational movement of the first relative to the second part.

[00128] The method may further include adjusting the connecting mechanism to optimally position the attachment relative to the UAV. Typically, the connecting mechanism may be adjusted to optimally position the attachment relative to the UAV to minimize interference to at least one of manoeuvrability of the UAV, a field of view of at least one camera mounted to an underside of the UAV and at least one stability sensor mounted to the underside of the UAV, if present.

[00129] According to a sixth aspect of the present invention, there is provided a method of releasing a line from a UAV carrying the line release assembly of the first or third aspects, said method including:

flying the UAV over a surface; and

applying tension to a line held by the line release assembly that exceeds the pre-set tension of the line release assembly.

[00130] Again, the method may include one or more features or characteristics of the connecting mechanism, the line release assembly and/or the UAV as hereinbefore described.

[00131 ] The method may include a preliminary step of setting the pre-set tension of the line release assembly to a desired tension.

[00132] The pre-set tension may be set by: (i) attaching a scale to an end of the line held by the line release assembly; (ii) pulling the scale and the end of the line away from the line release assembly; (iii) taking a reading of the scale the moment the line is released from the line release assembly; and (iv) adjusting the inward clamping pressure of the clamping members of the line release assembly and repeating steps (ii) and (iii) until a desired pre-set tension is reached.

[00133] Typically, tension in the line may be applied by pulling on either end of the line. When the tension applied to either end of the line exceeds the pre-set tension, the line will be released from the line release assembly.

[00134] According to a seventh aspect of the present invention, there is provided a method of remote fishing, said method including: providing a UAV carrying the line release assembly of the first or third aspects, said line release assembly holding a portion of a fishing line at or near an end of the line tethered to at least one hook dressed with a lure or bait;

locating at least one fish in a body of water, optionally through at least one camera carried by the UAV;

flying the UAV near the at least one fish such that the at least one hook is positioned near the at least one fish; and

releasing the portion of fishing line from the line release mechanism and the UAV by manually applying tension to the fishing line that exceed the pre-set tension or by the at least one fish striking the at least one hook and applying tension to the fishing line that exceeds the pre-set tension.

[00135] Again, the method may include one or more features or characteristics of the connecting mechanism, the line release assembly and/or the UAV as hereinbefore described.

[00136] Typically, the fishing line may be tethered at an opposite end to a spool associated with a reel.

[00137] In some embodiments, the reel may be a hand-held reel.

[00138] In other preferred embodiments, the reel may be a mechanical reel associated with a fishing rod. The mechanical reel may include a drag mechanism for applying tension on the line, e.g., to provide resistance to a run by a fish hooked on the end of the line tethered to the at least one hook.

[00139] The UAV may be remotely flown by an operator near the at least one fish.

[00140] In some embodiments, the operator may directly visually locate the at least one fish or may receive instructions about the whereabouts of the at least one fish by a spotter.

[00141 ] In other embodiments, the operator may locate the at least one fish through a viewfinder in communication with at least one camera carried by the UAV.

[00142] In some embodiments, tension may be manually applied to the fishing line by manually pulling or applying tension to a portion of line near or on the spool. For example, an angler may thumb the spool to apply tension.

[00143] In other embodiments, tension may be manually applied by tightening the drag mechanism of the reel. [00144] According to an eighth aspect of the present invention, there is provided a method of remotely providing a lifebuoy to at least one person in a body of water, said method including:

providing a UAV carrying the line release assembly of the first or third aspects, said line release assembly holding a portion of a line at or near an end of the line tethered to the lifebuoy;

flying the UAV near the at least one person such that the lifebuoy is positioned near the person atop the body of water; and

releasing the portion of line from the line release mechanism and the UAV by manually applying tension to the line that exceeds the pre-set tension or by the at least one person gripping the lifebuoy and applying tension to the line that exceeds the pre-set tension.

[00145] Again, the method may include one or more features or characteristics of the connecting mechanism, the line release assembly and/or the UAV as hereinbefore described.

[00146] The line may preferably be a rope or cable. The rope or cable is tethered at one end to the lifebuoy and at the other end to a reel.

[00147] Again, the UAV may be remotely flown by an operator near the at least one person.

[00148] In some embodiments, the operator may directly sight the at least one person or may receive instructions about the whereabouts of the at least one person by a spotter.

[00149] In other embodiments, the operator may sight the at least one person through a viewfinder in communication with at least one camera carried by the UAV.

[00150] In some embodiments, tension may be manually applied to the line by manually pulling or applying tension to a portion of line near or on the reel. For example, in one embodiment, a person may manually prevent the reel from spooling out further line to apply tension to the line. In another embodiment, a person may manually apply tension to the line by gripping or pulling on a portion of line near the reel away from the UAV.

[00151 ] In other embodiments, tension may be manually applied to the line by the at least one person gripping the lifebuoy, and preferably pulling the lifebuoy and thereby the line away from the UAV.

[00152] Any of the features described herein can be combined in any combination with any one or more of the other features described herein within the scope of the invention.

[00153] The reference to any prior art in this specification is not, and should not be taken as an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.

BRIEF DESCRIPTION OF DRAWINGS

[00154] Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of Invention in any way. The Detailed Description will make reference to a number of drawings as follows:

[00155] Figures 1 A and 1 B respectively show a rear view and a side view of a line release assembly according to an embodiment of the present invention connected to a UAV by a connecting mechanism of an embodiment of the present invention;

[00156] Figures 2A and 2B respectively show an end view and a perspective view of the line release assembly and connecting mechanism shown in Figures 1 A and 1 B;

[00157] Figures 3A and 3B respectively show a lower view of a part of the connecting mechanism shown in Figures 1 A, 1 B, 2A and 2B coupled to a UAV and an end view of a corresponding part of the connecting mechanism movably coupled to the line release assembly as shown Figures 1 A, 1 B, 2A and 2B;

[00158] Figure 4 is a forward perspective view of the line release assembly connected to a UAV by the connecting mechanism as shown in Figures 1 A and 1 B;

[00159] Figure 5 is a lower perspective view of the line release assembly connected to a UAV by the connecting mechanism as shown in Figures 1 A, 1 B and 4 and carrying a fishing line; and

[00160] Figure 6 is a lower perspective view of the line release assembly, UAV and connecting mechanism as shown in Figure 5 but carrying a line tethered to a lifebuoy.

DETAILED DESCRIPTION

[00161 ] Figures 1 A and 1 B show a line release assembly (100) according to an embodiment of the present invention being carried by a UAV (900). The line release assembly (100) is connected to the UAV (900) by a connecting mechanism (200) according to an embodiment of the present invention.

[00162] As shown, the line release assembly (100) is carried underneath the UAV (900) in a position which minimizes the risk of a line held by the line release assembly (100) from tangling with or catching on the UAV (900).

[00163] Moreover, the line release assembly (100) is carried by the UAV (900) in a position that minimizes interference to the manoeuvrability of the UAV (900), a field of view of the camera (910) mounted to an underside of the UAV (900) and at least one stability sensor (not visible) mounted to the underside of the UAV (900), if present.

[00164] The line release assembly (100) includes a pair of opposed clamping members (1 10) configured to clamp against one another, releasably hold a portion of a line, and release the portion of line when tension in the line exceeds a pre-set tension. Typically, the opposed clamping members (1 10) are configured to hold the portion of line up to the pre-set tension, and release the portion when tension in the line exceeds the pre-set tension.

[00165] The line release assembly (100) also include a linear actuating mechanism (120) operably coupled to the clamping members (1 10) for moving the clamping members (1 10) together and apart. The linear actuating mechanism (120) is adjustable to enable an inward pressure of the clamping members (1 10) when clamping together to be adjusted and thereby the pre-set tension of the line release assembly (100) to be adjusted.

[00166] As shown, the line release assembly (100) is connected to the UAV (900) by the connecting mechanism (200).

[00167] The connecting mechanism (200) includes a lower part (210; i.e., a first part) pivotally coupled to the line release assembly (100) and an upper part (220; i.e., a second part) connectable to the first part (210) and rotatably coupled to opposed legs (920) of the UAV (900) by two arms (230). The two arms (230) are each coupled to a foot or a horizontal portion of a leg (920) of the UAV (900).

[00168] The lower part (210) and the upper part (220) of the connecting mechanism respectively include mateable male and female portions that couple together in a bayonet-type connection. This will be described later with reference to Figures 3A and 3B.

[00169] Referring to Figure 2A, the clamping members (1 10) of the line release assembly (100) are in the form of a pair of opposed plates configured to move together and apart using the linear actuating mechanism (120).

[00170] Each clamping member (1 10) has two opposed surfaces including an inner abutting surface (1 1 1 ) and an opposed outer surface (1 12). The opposed surfaces are substantially parallel to one another and interconnected by opposing edges including an upper edge (1 13), an opposed lower edge (1 14) and opposed side edges (1 15). [00171 ] Each clamping member (1 10) further includes a rubber pad (1 16) extending at least partially across the abutting surface (1 1 1 ) of the clamping member (1 10) to at least partially assist in releasably holding the portion of line.

[00172] Best shown in Figure 2B, the clamping members (1 10) of the line release assembly (100) are pivotally coupled to the lower part (210) of the connecting mechanism (200) so that the line release assembly (100) is able to pivot in a substantially vertical plane relative to the lower part (210) of the connecting mechanism (200).

[00173] The clamping members (1 10) each include a protruding connecting member (1 18) having a central bore therethrough. The protruding connecting members (1 18) protrude from the upper edge (1 13) of each clamping member (1 10).

[00174] A lower portion of the lower part (210) of the connecting mechanism (200) likewise includes a protruding connecting member (218) also having a central bore therethrough.

[00175] The protruding connecting member (218) of the lower part (210) of the connecting mechanism (200) is configured to be received between the connecting members (1 18) extending from the clamping members (1 10) and be pinned together by a pivot pin (212) received through the central bores when co-aligned.

[00176] Referring back to Figure 2A, the linear actuating mechanism (120) includes a sliding arrangement including a central shaft (122), a cam (124) and a biasing mechanism or member.

[00177] The shaft (122) extends through a central portion of the clamping members (1 10), and the clamping members are slidably mounted to the shaft (122) for movement along the shaft (122). The biasing mechanism or member is in the form of the protruding connecting member (218) of the lower part (210) of the connecting mechanism (200).

[00178] The clamping members (1 10) are brought together using the cam (124) against the force of the biasing mechanism or member, which is partially positioned between the clamping members (1 10) for biasing them apart. The cam (124) is used by rotating or pivoting the cam (124) relative to the shaft (122).

[00179] When not under load, the protruding connecting member (218) of the lower part (210) of the connecting mechanism (200) causes the clamping members (1 10) to move away/separate from one another.

[00180] As shown, the shaft (122) extends through both clamping members (1 10) and is pivotally coupled at one end to the cam (124) such that the cam (124) can rotate or pivot relative to the shaft (122). The other end of the shaft (122) is threaded and is threadingly fastened against the outer surface (1 12) of the adjacent clamping member (1 10) by a threaded fastener (126).

[00181 ] The threaded fastener (126) includes an outer grip to assist a user in rotating the threaded fastener (126) to adjust the inward clamping pressure of the clamping members (1 10) and thereby the pre-set tension of the line release assembly (100).

[00182] Similarly, the cam (124) includes a handle portion to assist a user in rotating or pivoting the cam (124) relative to the central shaft (122) to bring together and move apart the clamping members (1 10) of the line release assembly (100).

[00183] As also shown in both Figures 2A and 2B, the two arms (230) extend from opposite sides of the upper part (220) of the connecting mechanism (200) and have opposed ends, including a first end (232) configured to be rotatably coupled to a foot or a horizontal portion of a leg (920; shown in Figures 1 A and 1 B) of the UAV (900; shown in Figures 1 A and 1 B) and a second end (234) rotatably coupled to the upper part (220) of the connecting mechanism (200).

[00184] The arms (230) are each of a tubular construction with a substantially circular cross- section. Generally, the arms (230) are formed from lightweight plastic or metal material or materials. Indeed and as shown in Figure 2A, each arm (230) includes a cut out (235) to at least partially reduce the weight of the arm (230).

[00185] Each arm (230) includes a bend such that the first and second ends (232, 234) are offset relative to one another with the second end (234) being positioned higher relative to the first end (232). Advantageously, this offset assists in suitably positioning the line release assembly (100) relative to the portion of the leg (920; shown in Figures 1 A and 1 B) of the UAV (900; shown in Figures 1 A and 1 B) to which the first end (232) is coupled.

[00186] The first end (232) of each arm (230) is coupled to a portion of a leg (920; shown in Figures 1 A and 1 B) of the UAV (900; shown in Figures 1 A and 1 B) by a leg clamp (240) rotatably coupled to the first end (232).

[00187] Each leg clamp (240) has two clamping members (242) configured to together at least partially clamp about a portion of a leg (920; shown in Figures 1 A and 1 B) of the UAV (900; shown in Figures 1 A and 1 B).

[00188] The leg clamp (240) includes an actuating mechanism in the form of a threaded fastener (244) extending through both clamping members (242) for bringing the clamping members (242) together and apart when turned. The threaded fastener (244) includes a head (245) to assist a user in turning the fastener (244).

[00189] A leg clamp (240) is rotatably coupled to the first end (232) of each arm (230) such that the leg clamp (240) is able be rotated relative to the arm (230) to clamp to vertical or horizontal portions of a UAV (900; not shown) leg (920; not shown), for example.

[00190] The leg clamp (240) is rotatably coupled by a part of the leg clamp (240) being at least partially received in the first end (232) of each arm (230). The part of the leg clamp (240) received in the first end (232) of each arm (230) is fastened in place a threaded fastener (246; visible only in Figure 2A) received in an opening in a wall of the arm (230) at or near the first end (232).

[00191 ] As shown, the second end (234) of each arm (230) is rotatably coupled to an upper portion of the upper part (220) of the connecting mechanism (200). The second end (234) is rotatably coupled to the upper portion of the upper part (220) of the connecting mechanism (200) by a spacer (235; shown in Figure 3A) that is at least partially received in the second end (234) of each arm (230). Advantageously, the spacer (235) allows a length of each arm (230) to be adjusted to optimally position the line release assembly (100) relative to the UAV (900; not shown).

[00192] Referring to Figure 2A, the spacer (235) has opposed ends, including a first end portion (236) and an opposed second end portion (237) for connecting to the second end (234) of the arm (230) and the upper portion of the upper part (220) of the connecting mechanism (200), respectively. The spacer (235) has a similar profile shape as the arm (230) but a smaller diameter to allow the spacer (235) to be at least partially received in the second end (234) of the arm (230).

[00193] As with the first end (232) of the arm (230), a first end portion (236) of the spacer (235) is at least partially received in the second end (234) of the arm (235) and secured in place by a threaded fastener (238) received in an opening in a wall of the arm (230) at or near the second end (234).

[00194] Best shown in Figure 2B, the opposed second end portion (237; not visible) of the spacer (235; not visible) is at least partially received in a corresponding opening defined in the upper portion of the upper part (220) of the connecting mechanism (200). As with the first end portion (236), the second end portion (237) is secured in place by a threaded fastener (239; shown in Figure 2A) received in an opening in wall of the corresponding opening. The second end portion (237) is able to rotate about a longitudinal axis of the spacer (235) and the arm (230) relative to the upper part (220) of the connecting mechanism (200). [00195] As mentioned previously, Figures 3A and 3B respectively show the upper part (220) and the lower part (210) of the connecting mechanism (200), which respectively include mateable female and male portions that couple together in a bayonet-type connection.

[00196] Best shown in Figure 3A, a lower portion of the upper part (220) of the connecting mechanism (200) includes an aperture (222) and two opposed inwardly extending projections (224) that partially extend around a peripheral edge of the aperture (222).

[00197] Best shown in Figure 3B, an upper portion of the lower part (210) of the connecting mechanism (200) includes a base portion (212) configured to at least partially abut against the peripheral edge of the aperture (222) of the female formation. The male formation further include a projection (214) extending from the base portion (212) with an end portion (216) configured to be received in the aperture (222; shown in Figure 2A) of the female formation and engage with the two inwardly extending projections (224; shown in Figure 2A) of the female formation.

[00198] The male formation of the lower part (210) of the connecting mechanism (200) is rotatably coupled to a remainder of the lower part (210). Specifically, the base portion (212), the projection (214) and the end portion (216) are rotatably coupled to a remainder of the lower part (210) of the connecting mechanism (200).

[00199] Advantageously, free rotation of the lower part (210) of the connecting mechanism (200) relative to the male formation of the lower part (210) and the upper part (220) of the connecting mechanism (200) may at least partially prevent tangling of a line carried by the line release assembly (100).

[00200] The base portion (212) is rotatably coupled to a remainder of the lower part (210) of the connecting mechanism (200) by axially overlapping coupling parts coupled together by an outer sleeve or by a retaining portion of one coupling part received and retained in the other coupling part.

[00201 ] The lower and upper parts (210, 220) of the connecting mechanism (200) are connected together by aligning and inserting the end portion (216) of the male formation into the aperture (222) of the female formation and then rotating the male formation relative to the female formation such that the end portions (216) engage with the two inwardly extending projections (224) of the female formation. Engagement of the end portions (216) of the male formation with the two inwardly extending projections (224) of the female formation prevents translational and lateral movement of the lower part (210) of the connecting mechanism (200) relative to the upper part (220). [00202] As shown in Figure 3B, the projection (214) of the male formation is in the form of a cylindrical post with the end portion (216) located at or near a free end of the post furthest from the base portion (212).

[00203] The end portion (216) typically include at least two lateral extensions (217) extending from the post at or near the free end of the post from opposite sides of the post.

[00204] The base portion (212) of the male formation of the lower part (210) of the connecting mechanism (200) includes a collared grip (213) to assist a user in handling and rotating the lower part (210) of the connecting mechanism (200) relative to the upper part (220) of the connecting mechanism (200). The collared grip (213) extends around a periphery of the base portion (212).

[00205] As also shown in Figure 3B, the end portion (216) includes two resilient projections (219) extending outwardly from the end portion (216) of the projection (214) of the male formation.

[00206] Referring again to Figure 3A, an inner surface of the aperture (222) of the female formation includes two corresponding indentations (229) that engage with and at least partially receive the two resilient projections (219; shown in Figure 3B) when the male and female formations are coupled.

[00207] Advantageously, engagement of the resilient projections (219) with the corresponding indentations (229) at least partially prevents inadvertent disengagement of the lower part (210) of the connecting mechanism (200) from the upper part (220) by at least partially inhibiting or impeding rotation of the male formation relative to the female formation.

[00208] Referring to Figure 4, the pivotal coupling of the clamping member (1 10) of the line release assembly (100) to the lower part (210) of the connecting mechanism (200) together with the rotatably coupling of the arms (230) to the upper portion of the upper part (220) of the connecting mechanism (200), facilitate in allowing the line release assembly (100) to pivot out of the way when the UAV (900) lands on a support surface.

[00209] To prevent the line release assembly (100) inadvertently pivoting into the camera (910) mounted to the UAV (900), the connecting mechanism (200) includes a pivot stop (410).

[00210] The pivot stop (410) is located on a side of the connecting mechanism (200) nearest the camera (910) mounted to the UAV (900).

[0021 1 ] As shown, the pivot stop (410) extends outwardly from the upper portion of the upper part (220) of the connecting mechanism (200) to at least partially abut against a portion of the line release assembly (100) when the line release assembly (100) is pivoted towards the camera (910).

[00212] The pivot stop (410) has a substantially L-shaped profile with a first part (412) extending outwardly from the upper portion of the upper part (220) of the connecting mechanism (200) in a substantially horizontal orientation. A second part (414) of the pivot stop (410) extends towards the line release assembly (100) from an outer end of the first part (412) in a substantially perpendicular orientation relative to the first part (412).

[00213] A method of remote fishing with the line release assembly (100) of the present invention is now described in detail with reference to Figure 5.

[00214] The method includes a preliminary step of setting the pre-set tension of the line release assembly (100) to a desired tension.

[00215] The pre-set tension is set by: (i) attaching a scale to an end of the line held by the line release assembly (100); (ii) pulling the scale and the end of the line away from the line release assembly (100); (iii) taking a reading of the scale the moment the line is released from the line release assembly (100); and (iv) adjusting the inward clamping pressure of the clamping members (1 10) of the line release assembly (100) and repeating steps (ii) and (iii) until a desired pre-set tension is reached.

[00216] The method includes clamping a portion of fishing line at or near an end of the line tethered to a hook (510) dressed with a lure or bait (not shown). The linear actuating mechanism (120) of the line release assembly (100) is used to bring the clamping member (1 10) apart and together to clamp the portion of line.

[00217] Typically, the fishing line is tethered at an opposite end to a spool associated with a mechanical reel and fishing rod (520). The mechanical reel includes a drag mechanism for applying tension on the line, e.g., to provide resistance to a run by a fish hooked on the end of the line tethered to the hook (510).

[00218] The UAV (900) carrying the line release assembly (100) is then remotely flown across a body of water to a location where fish are located.

[00219] The operator flying the UAV (900) can directly visually locate the fish or may receive instructions about the whereabouts of the fish by a spotter.

[00220] Alternatively, the operator can locate the fish through a viewfinder in communication with the camera (910; not shown) carried by the UAV (900). [00221 ] Once a fish is located, the operator flies the UAV (900) near the surface of the water such that the hook (510) is positioned near the fish.

[00222] The portion of line held by the line release assembly (100) can then be manually released from the line release assembly (100) by the operator or an angler handling the mechanical reel and fishing rod (520) applying tension to the fishing line that exceed the pre-set tension (e.g., by tightening the drag mechanism).

[00223] Alternatively, the portion of line held by the line release assembly (100) can be released from the line release assembly (100) by the fish striking the hook (510) and applying tension to the line that exceeds the pre-set tension.

[00224] A method of remotely providing a lifebuoy (610) to a person in a body of water using the line release assembly (100) of the present invention is now described in detail with reference to Figure 6.

[00225] As with the previously described method, the method includes a preliminary step of setting the pre-set tension of the line release assembly (100) to a desired tension. This may be carried out as previously described.

[00226] The method includes clamping a portion of a line at or near an end of the line tethered to the lifebuoy (610). The linear actuating mechanism (120) of the line release assembly (100) is again used to bring the clamping member (1 10) apart and together to clamp the portion of line.

[00227] Typically, the line is tethered at an opposite end to a reel (620).

[00228] The UAV (900) carrying the line release assembly (100) is then remotely flown across the body of water to a location where the person is located.

[00229] The operator flying the UAV (900) can directly visually locate the person or may receive instructions about the whereabouts of the person by a spotter.

[00230] Alternatively, the operator can locate the person through a viewfinder in communication with the camera (910; not shown) carried by the UAV (900).

[00231 ] Once the person is located, the operator flies the UAV (900) near the surface of the water such that the lifebuoy (610) is positioned near the person atop the surface of the water.

[00232] The portion of line held by the line release assembly (100) can then be manually released from the line release assembly (100) by the operator or a third party handling the reel (620) applying tension to the line that exceed the pre-set tension.

[00233] Alternatively, the portion of line held by the line release assembly (100) can be released from the line release assembly (100) by the person grabbing the lifebuoy (510) and applying tension to the line that exceeds the pre-set tension.

[00234] In the present specification and claims (if any), the word "comprising" and its derivatives including "comprises" and "comprise" include each of the stated integers but does not exclude the inclusion of one or more further integers.

[00235] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more combinations.

[00236] In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims (if any) appropriately interpreted by those skilled in the art.

Claims

1 . A line release assembly for use with or when used with an unmanned aerial vehicle ("UAV"), said line release assembly including:

2. The line release assembly of claim 1 , further including an actuating mechanism for moving the clamping members together and apart.

3. The line release assembly of claim 2, wherein the actuating mechanism is adjustable to enable inward pressure of the clamping members when clamped together to be adjusted and thereby the pre-set tension of the line release assembly to be adjusted.

4. The line release assembly of claim 2 or claim 3, wherein the actuating mechanism is manually actuated and moves the clamping members together and apart in a linear movement.

5. The line release assembly of any one of claims 2 to 4, wherein the actuating mechanism further includes a biasing member and wherein the actuating mechanism moves the clamping members together against the force of the biasing member and wherein the clamping members move apart under the force of the biasing member.

6. The line release assembly of any one of claims 2 to 5, wherein the actuating mechanism includes a sliding arrangement including a central shaft, at least one cam and a biasing member, wherein the central shaft extends through a central portion of the clamping members with the clamping members being slideably mounted to the shaft for movement along the shaft.

7. The line release assembly of claim 6, wherein, in use, the clamping members can be brought together using the at least one cam against the force of the biasing member by rotating or pivoting the at least one cam relative to the central shaft.

8. The line release assembly of any one of claims 1 to 7, wherein the clamping members include a pair of opposed plates, each plate having two opposed surfaces including an inner abutting surface and an opposed outer surface.

9. The line release assembly of claim 8, wherein each plate further includes a liner or coating at least on a portion of the abutting surface to at least partially facilitate assist in releasably holding the portion of the line.

10. The line release assembly of claim 9, wherein the liner or coating is formed from a resiliently deformable material.

1 1 . The line release assembly of any one of claims 1 to 10, wherein the pair of clamping members are configured to be carried beneath the UAV in substantially parallel vertical planes so that when the line is released via opposed lower edges of the clamping members there is minimal risk of the line catching or tangling on a part of the UAV or the line release assembly.

12. The line release assembly of any one of claims 1 to 1 1 , wherein the line release assembly wis configured to be detachably attached to an underside of the UAV.

13. The line release assembly of any one of claims 1 to 12, wherein the line release assembly is configured to be adjustably attached to an underside of the UAV.

14. The line release assembly of any one of claims 1 to 13, wherein the line release assembly is attached to the UAV by a connecting mechanism or part of a connecting mechanism.

15. The line release assembly of claim 14, wherein the connecting mechanism includes a first part associated with the line release assembly and a second part connectable to the first part and associated with the UAV.

16. The line release assembly of claim 15, wherein the first part and the second part respectively include mateable male and female portions that couple together.

17. The line release assembly of claim 15 or claim 16, wherein the first part of the connecting mechanism includes a lower portion for coupling to the clamping members and an upper portion for connecting with the second part of the connecting mechanism.

18. The line release assembly of claim 17, wherein the upper and lower portions of the first part of the connecting mechanism are rotatably coupled to one another such that the lower portion is rotatable relative to the upper portion.

19. The line release assembly of claim 17 or claim 18, wherein the lower portion of the first part of the connecting mechanism is pivotally coupled to the clamping members.

20. The line release assembly of any one of claims 16 to 19, wherein the second part of the connecting mechanism includes a lower portion configured to connect with the upper portion of the first part of the connecting mechanism and an upper portion configured to be connected to a portion of the UAV.

21 . The line release assembly of claim 20, wherein the upper and lower portions of the second part of the connecting mechanism are rotatably coupled to one another.

22. The line release assembly of claim 20 or claim 21 , wherein the upper portion of the first part of the connecting mechanism includes a male formation and the lower portion of the second part of the connecting mechanism includes a female formation and wherein the male formation is configured to be at least partially inserted into or coupled with the female formation.

23. The line release assembly of claim 20 or claim 21 , wherein the upper portion of the first part of the connecting mechanism and the lower portion of the second part of the connecting mechanism are connectable by way of a bayonet-type connection.

24. The line release assembly of any one of claims 20 to 23, wherein the upper portion of the second part of the connecting mechanism includes at least one arm configured to be coupled to at least a portion of the UAV.

25. The line release assembly of claim 24, wherein the at least a portion of the UAV is a leg of the UAV.

26. The line release assembly of claim 24 or claim 25, wherein the upper portion of the second part of the connecting mechanism includes at least two opposed arms configured to be coupled to opposed legs of the UAV such that the line release assembly is positioned between the opposed legs.

27. The line release assembly of claim 26, wherein each arm is connectable to a leg of the UAV by a leg clamp rotatably coupled to an outer end of each arm.

28. The line release assembly of claim 26 or claim 27, wherein the length of each arm is adjustable to allow the line release assembly to be optimally positioned relative to the UAV.

29. The line release assembly of any one of claims 14 to 28, wherein the connecting mechanism further includes a pivot stop configured to at least partially prevent the line release assembly from pivoting into at least one camera or stability sensor mounted or located on an underside of the UAV.

30. The line release assembly of claim 29 when dependent on claim 20, wherein the pivot stop has a substantially L-shaped profile that extends outwardly from an upper portion of the second part of the connecting mechanism to at least partially abut against a portion of the line release assembly when the line release assembly is pivoted towards the at least one camera or stability sensor, e.g., when landing the UAV.

31 . The line release assembly of claim 30, where the pivot stop includes a first part extending outwardly from the upper portion of the second part of the connecting mechanism in a substantially horizontal direction and a second part orthogonally extending towards the line release assembly from an outer end of the first part of the pivot stop.

32. The line release assembly of any one of claims 1 to 31 , wherein the UAV is a rotary-wing aircraft.

33. The line release assembly of any one of claims 1 to 32, wherein the line is selected from a fishing line, a string, a thread, a cord, a wire, a cable, a chain and a rope.

34. The line release assembly of claim 33, wherein the line is a fishing line or rope.

35. A UAV for releasing a line including:

the line release assembly of any one of claims 1 to 34.

36. A method of releasing a line from a UAV carrying the line release assembly of any one of claims 1 to 34, said method including:

flying the UAV over a surface; and

37. A method of remote fishing, said method including:

providing a UAV carrying the line release assembly of any one of claims 1 to 34, said line release assembly holding a portion of a fishing line at or near an end of the line tethered to at least one hook dressed with a lure or bait;

releasing the portion of fishing line from the line release mechanism and the UAV by manually applying tension to the fishing line that exceeds the pre-set tension or by the at least one fish striking the at least one hook and applying tension to the fishing line that exceeds the pre-set tension.

38. A method of remotely providing a lifebuoy to at least one person in a body of water, said method including:

providing a UAV carrying the line release assembly of any one of claims 1 to 34, said line release assembly holding a portion of a line at or near an end of the line tethered to the lifebuoy; flying the UAV near the at least one person such that the lifebuoy is positioned near the person atop the body of water; and

Date: 28 September 2017