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EP1512623B1 - Steering device - Google Patents

Steering device Download PDF

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Publication number
EP1512623B1
EP1512623B1 EP04445070A EP04445070A EP1512623B1 EP 1512623 B1 EP1512623 B1 EP 1512623B1 EP 04445070 A EP04445070 A EP 04445070A EP 04445070 A EP04445070 A EP 04445070A EP 1512623 B1 EP1512623 B1 EP 1512623B1
Authority
EP
European Patent Office
Prior art keywords
carrying arm
propeller
boat
main carrying
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04445070A
Other languages
German (de)
French (fr)
Other versions
EP1512623A3 (en
EP1512623A2 (en
Inventor
Martin Rybeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rybeck Marin-Consult AB
Original Assignee
Rybeck Marin-Consult AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rybeck Marin-Consult AB filed Critical Rybeck Marin-Consult AB
Publication of EP1512623A2 publication Critical patent/EP1512623A2/en
Publication of EP1512623A3 publication Critical patent/EP1512623A3/en
Application granted granted Critical
Publication of EP1512623B1 publication Critical patent/EP1512623B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers

Definitions

  • the purpose of this invention is to enable sailing boats and the like to steer sideways directly by the application of side thrust when navigating in confined waters e.g. when docking with a quay or manoeuvring through narrow passages.
  • the conventional method for achieving this is to mount a propeller in a tunnel across the boat and below the waterline.
  • a thruster tunnel can be mounted at the bow or the stem of the boat, and is disclosed, for example, in document NL 9402184 .
  • This invention makes it possible to place the propeller under the water surface, even at the shallowest part of the hull, whilst also reducing the volume of internal space required for a conventional thruster tunnel.
  • the invention achieves these objectives by the features of claim 1, namely by swinging down the propeller and the propeller housing through a recess in the bottom of the boat, to which a flexible ring is attached, that is arranged around the propeller carrying arm; thus the propeller will be placed under the water surface (fig 1)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Cleaning In General (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Bridges Or Land Bridges (AREA)
  • Massaging Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Steering device for a vessel in restricted situations for installation of a bridge involves a propeller housing (1) with propellers (3) driven by a motor and positioned on each side of a support arm (4), which is pendulously suspended in axes (6), and can swing downwards through the boat bottom and be driven underwater.

Description

    Technical area and background
  • The purpose of this invention is to enable sailing boats and the like to steer sideways directly by the application of side thrust when navigating in confined waters e.g. when docking with a quay or manoeuvring through narrow passages.
  • The conventional method for achieving this is to mount a propeller in a tunnel across the boat and below the waterline. Such a thruster tunnel can be mounted at the bow or the stem of the boat, and is disclosed, for example, in document NL 9402184 .
  • Modern hulls, especially for sailing boats, are often designed with a planing hull, which needs very shallow draft at the bow, which means that a conventional tunnel is often mounted close to or above the water surface (fig 3). To counter this the tunnel can be moved closer to the centre of the boat but this gives a lower turning effect for a given power input.
  • This invention makes it possible to place the propeller under the water surface, even at the shallowest part of the hull, whilst also reducing the volume of internal space required for a conventional thruster tunnel.
  • The invention achieves these objectives by the features of claim 1, namely by swinging down the propeller and the propeller housing through a recess in the bottom of the boat, to which a flexible ring is attached, that is arranged around the propeller carrying arm; thus the propeller will be placed under the water surface (fig 1)
    • Description of the drawings
  • The invention is best described and understood by reference to the attached drawings.
    • Fig 1. Illustrates the main principles of the invention; showing how the propeller, and its housing / shroud is swung down from a recess in the bottom of the boat.
    • Fig 2. Shows an example of the conventional design; a propeller in a thruster tunnel.
    • Fig 3. Shows a more typical profile of the bottom of modem boat hulls.
    • Fig 4. Shows the pivot point around which the propeller assembly swings.
    • Fig 5. Shows how, when fully deployed, the propeller housing locates to the boat structure so that the side forces are not directed through the pivot point

Claims (2)

  1. A steering device for assisting the steering of a boat (2), comprising; a propeller assembly (1) with bevel gearbox, propeller and shroud arranged to steer the boat (2) sideways, wherein said propeller assembly (1) is attached to a first end of a main carrying arm (4); a pivot shaft (6) held in a retaining ring (7) and attached to said main carrying arm (4); a carrying arm yoke (5); a rigid sealed housing (9) surrounding the upper part of said propeller assembly (1); an adjustable support (11) arranged in the housing (9) for taking up side forces; a recess opening arranged in the bottom of the boat inside said housing (9); a hinged lid of approximately the same size as said recess opening; the device further comprises an actuator (12) connected to said carrying arm yoke (5) and arranged to pivot said main carrying arm (4) around a pivot point arranged forward of said propeller assembly (1), whereby said propeller assembly (1) is arranged to be pivoted through said recess, a motor is attached to a second end of said main carrying arm (4), and said first and second ends are connected by a drive shaft (8), characterized by a flexible sealing ring (10) which is arranged around the circumference of said main carrying arm (4) and attached to the inside of the housing (9).
  2. A steering device according to claim 1, characterized in that, said pivot point is situated on said main carrying arm (4).
EP04445070A 2003-07-14 2004-06-09 Steering device Expired - Lifetime EP1512623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0302063 2003-07-14
SE0302063A SE0302063L (en) 2003-07-14 2003-07-14 Control device

Publications (3)

Publication Number Publication Date
EP1512623A2 EP1512623A2 (en) 2005-03-09
EP1512623A3 EP1512623A3 (en) 2006-10-04
EP1512623B1 true EP1512623B1 (en) 2007-11-14

Family

ID=27764984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04445070A Expired - Lifetime EP1512623B1 (en) 2003-07-14 2004-06-09 Steering device

Country Status (4)

Country Link
EP (1) EP1512623B1 (en)
AT (1) ATE378249T1 (en)
DE (1) DE602004010012T2 (en)
SE (1) SE0302063L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3587240A1 (en) 2018-06-22 2020-01-01 Lewmar Limited Retractable thruster and drive shaft for retractable thruster

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE432211T1 (en) 2005-06-02 2009-06-15 Waertsilae Ship Design Germany ADDITIONAL DRIVE DEVICE FOR SHIPS
FR2913399B1 (en) * 2007-03-07 2009-05-22 Max Power Soc Par Actions Simp PROPULSION SYSTEM FOR ASSISTING MANEUVER FOR A BOAT.
EP2548797B1 (en) * 2011-07-18 2014-07-23 Sleipner Motor As Retractable thruster
DE202012012844U1 (en) * 2012-03-26 2014-02-11 Markus Schilcher Watercraft, such as surfboard with a drive unit
WO2014052531A1 (en) * 2012-09-26 2014-04-03 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US9260173B2 (en) 2012-09-26 2016-02-16 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US8894453B2 (en) 2012-09-26 2014-11-25 Robert Case Shallow-draft watercraft propulsion and steering apparatus
GB2544467A (en) 2015-11-12 2017-05-24 Lewmar Ltd Retractable thruster

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802156A (en) * 1978-02-27 1979-08-29 Schottel Nederland Bv VESSEL WITH TILTABLE RUDDER PROPELLER AND CONSTRUCTION UNIT INTENDED FOR SUCH VESSELS.
NL9402184A (en) * 1994-12-22 1996-04-01 Lips A G Pivotable rudder propeller
NL1000019C1 (en) * 1995-04-03 1996-10-04 Meissner Engineering B V Retractable bow-mounted propeller for boat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3587240A1 (en) 2018-06-22 2020-01-01 Lewmar Limited Retractable thruster and drive shaft for retractable thruster

Also Published As

Publication number Publication date
ATE378249T1 (en) 2007-11-15
EP1512623A3 (en) 2006-10-04
EP1512623A2 (en) 2005-03-09
SE524699C2 (en) 2004-09-21
DE602004010012D1 (en) 2007-12-27
SE0302063L (en) 2004-09-21
SE0302063D0 (en) 2003-07-14
DE602004010012T2 (en) 2008-10-23

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