AU2015264912B2 - A hole saw with interchangeable cutting blades - Google Patents
A hole saw with interchangeable cutting blades Download PDFInfo
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- AU2015264912B2 AU2015264912B2 AU2015264912A AU2015264912A AU2015264912B2 AU 2015264912 B2 AU2015264912 B2 AU 2015264912B2 AU 2015264912 A AU2015264912 A AU 2015264912A AU 2015264912 A AU2015264912 A AU 2015264912A AU 2015264912 B2 AU2015264912 B2 AU 2015264912B2
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- hole saw
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- saw
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Abstract
A hol saw having a cteal body podon adapted to receive a hote aw Wade p tk The body and the bade have correspondo-iy shaped apedures and Ings that co ) operate together to hod the blade in placet A locking means fukter assIsts in ensuing that the blade wMs koted to th bd inltdes a Aiding snt4htlr t engages the aperture in the blade and the body is itself kaiked in place thereby lod the blade to the body
Description
A hole mw with lMeirsshsniesl)!e cashing bMes
FIELD OF THE
Thspmmt inveMon Mates to a hole saw with iaterehMgeabie ««Eager drilling hluks. In particular, & bole saw adapted to receive a plurality of smiting blades of different cutting coai%oraik>ns.
BACkOROIJHD OF TEE INVENTION
Hole saws are a very Widely used tool for many applications. Topically a hole saw Mes a Eat solid base drat is locked by a dnl.1, the base providing support for the bolo saw. Some bases kdmte mst%le diameter grooves adapted to accommodate bole mm of ditlmea! diameters, Typically these bases, with a plorality of concentric peeves, are of a dnuaeier greater than the hole saw Made sad as a result drilling dopit is limited to the length of the bole saw body portion, this limitation rnsirMs the possible uses of the hole saw ami possible surfaces able to be drilled.
Other bole sews m single aired, overeombtg Me sbovomwtttmerl pwbto of a larger diameter base but requiring the user to change tire entire bole sear tor each application, A uses' with a single shed hole mw steeds to replace the hol e saw Mr each stnihne being drilled as well as for each different diameter bole. The removal and installation of hole saw bodies for each .new application or Mlowing the fkiiure of a hole saw blade is troublesome, labour intdnawe, and time consuming.
Holes saw blades use different nutter materials and configurations to'more effectively ctd the srniaee being drilled,. For example, serrated carbide tipped bole Saxvs are generally used 1» drib harder and more abrasive surfaces than is possible with a regular steel blade. Some composite woods are more edhetively eat with a different blade coMpratkm and cue best ent with a single tooth carbide tipped outing element Abrasive materials such as glass, eemaues, stone, asbestos and seme plastic «trees also require difIMnt cmtmg materials mi. comlgmadon of the hole saw' Made, A diamond nr esrhide got entatwted blade is typically used in these appliealimta, Aa each application may require a different bole saw blade eonignmliotb the user Is regoimd to nudntaio an Inventory of dllluent bole saws for each snrfsce to be drilled and each dlarnmer of btde, inclusive of back up hole saw bodies in the even! of Made failure. iueb & large inventory is both cumbersome mid espeMve, 1 is therefor® an object of i$m pm&mi invention to ovotmmo the aforementioned. problem$ and to ptmiie too jmbMo with a nrefih aitemafim
simmmiy of she mvmm&N
Therefore in. on® dim ot'tre InvMioh there Is proposed a Mb saw including: a Mb aw body portion; mad a. Mb saw blade pottien* fie ssM Me saw Mad® iMhrn is mmmUy abashed to said Me MwMtyportei
FmfmMy mM Mb saw blade ixtriiest loelndes at« md a ending Made md at the other end m oogsgommi means.
PreiMMy said Mb saw body patios iMMw at om md m okmlmmi means adapted to receive said esg&gomM rnm& of the Me mw Mad® md- at the Other end a plurality of bores iocluding at least a eontrai bore.
Preferably said aegageureet meaerinelodes at least, bee Mg emending Mgitudhally from Me hole saw blade portion.
Preferably said central bote is adapted to .receive a. doll hit, whereM said drill bit emends through sad beyond said hole saw Made poftaoeu M a preferred emboddnere said engagement means of iba hole saw blade portion is adapted to be received by the Me saw body portion atiaebmetd means rotatably tea a first to a second poaiUoa» whereto, said iirst poaiboa tbe Me sew Mad® porboa is freely insartshle and removable som the hole saw body portion and ia said second position at least one said extending lag is adapted to be reialned by said attaehownr means thereby locking the Me saw blade to the hole saw body. la anoihnr etabodhtreat said enpgement means of the Me saw blade portion is adapted to be received by tha bole saw' body portion aitaehreent tneana Mag an btterlemtoe it to retain at least one said MsMng Mg with said attachment means. la a ikriiar amibOilmmi said hole saw body portion further lacludes at least άψ longrtodniatly slideable a first to a second position, wherein Mid first position the hole saw blade portion is freely insertable and removable fen the bole saw body portion sad In said second position said Mention, dip extends into said hols saw Made portion thereby locking the bole saw Mode to the hole sow body.
In preference said retention clip does not exfed mMally out Jkan the bole saw bodyportion.
In a still further form of the invention said bole saw blade portion and said bole sase body portion, further include a annular groove adapted to retain a C clip, wherein said C dip la inserted Into said annular groove when said bole saw body portion «ad said hole saw blade portion are abutted together thereby lechingike hole saw blade to the bole saw body,. in preference said € clip does fe. protrude radially fern the hole saw body portion or the Me saw blade portion. in a still farther tor of the feentlnn said bole saw body portion further includes at least one locking strip pnafeeiiag longitudinally hrotn the bole saw body prntion at one end ml attached to said hole body portion at the other end, wherein sen! locking skip is b iaseti front a Irst to a second petition and includes a protrusion stdsptod to he received· fey a eotrespondlng aj«re k said hole sew blade portion thereby locking the hole saw Made portion to the hole saw body when said biased locking strip is in the ihsi position.
An advantage of such a intorebaogeahle bole saw- blade snongstomt is that a hole saw blade may be rapidly retnoveti and reattached, SMI a Rather advantage is that hy utilising such a removably attachable hole saw blade portion a user anprres less room to store a plurality nibble saw blades tin different appheations.
Still a Rather advantage ts that said hole saw body can he used with oounuoojy svaikhle bole saw mandrels,
BRIEF DESORPTION OF Till DRA WINGS 1¾ aeeomgsayhig drawkp* which ace irteoiparaied 1st and eonstitut» a part of Iks apeetScatioi]; llrtskis several mptamia&oas of the kvmdoa and, together withthe description, serve to ea^laki tbo ad vantages and prisctplas of the mvmtkau 1& the drawings:
Fi gore '1 a illn qtee&m a perspective view of a hole sow body sod a hole saw
Made hi a disengaged position.; '
Figure lb ilnatratea a perspective view of a hols sow body asd a hole w
Made ia art Inserted position:
Figure le illnsrraiea a p&speetive view of a hole sew body and a hole saw blade la a looted position;
Figure 2 illustrates a moss seetiomti view of a hate saw body and a bole saw blade .to a looked position;
Figure 3 ilusbaies a kp view of a bole saw body m& a bole sew blade hi a locked position:
Figaro 4a lilusbates a pmapeetive shew of a hole saw body amt a bole saw Made in a disengaged positron;
Figure 4b liliwhates a pmapeedvo alow of a hole saw body amt a bole saw Made m m inserted posiharg
Figure 4e iibmhaks a perspective view of a bole saw body and a bole saw Made k a locked position;
Figure 5 liberates a cross soktonal idew of a bole saw body amt a bole saw blade hi a locked position;
Figure 4 Muatmtes a top view of a hole mw body mid a bole saw Made m a looked position;
Figure ?a illustrates a perspective view of a bole saw body md a hole saw blade la a dlseaaaued ooaitkn:
Figaro fb Illustrates a pmgeetive view sf & Ml» nm M# a»d a· Me mm blade I» & locked pesihoa;
Figure I iMs a. cross seehoeat flw of a Me « body sad & M« w blade In a looked position;
Figure $ illustrates a lop view of & hole saw body and a bole §ar blade is a locked gsdlbn;
Figure Ϊ 0 iksirates a lop view of a bole saw body and a bole saw blade in a loekodpositloo;
Figure 11a IMMes a pemg&^m view oft bolo sew body sod a bolo saw blade is a disengaged pusition;
Figure I l b illustrates a perspective view of e bole saw body and a bole saw blade is a looked pmMm;
Figure 12 ifhssMes a perspective view of a bole saw body and Met diiMreui bolo sew bledo mnFgurahone; F%bks 13 Illustrates a perspective view of a bole saw body and an alternate locking means of the bole saw Made;
Figaro 14 Illustrates a pempeehve view of a Mo saw body and a bother leaking means of the bole saw blade;
Figaro 15 ill ustrates the locking means of Figure 14 without a bolo saw blade;
Figure l b hluskntes the Inching means of Figure 15 with a steel hole saw blade attached aod locked thereto;
Figure 11 Illustrates the looking means of Figure IS with a eodcrete saw blade attached and looked thereto; and
Figure 1 ί tllusMes Me locking means of Figure 15 with a timber hole sew hlede attached sod locked thereto.
DESCRIPTION OP THE PRBFEBtED EMBODIMENTS
The fidlowing detailed desedpion nfthe inveuion refers to the aewtgxntyiog drnmnp, Alfeotsgh the desaripfion iaeludes exempt sxubndimenfe, other etnhodtmeuis sm pass&te, mid changes may bo made to the embodiments de&mbed without departing from the spirit and scope of the invention.
Figures 1 a. lb nod ic show & perspective view of on® embodiment of the present invention. Shown in the figures is a bole sew l 0 including a hole sew hied® portion 12 and a hole saw body portion ] 4. 'The hole saw blade 12 includes a cylindrical body with at least one coding tooth 1 0 at one end thereof. The arrangement of the cutting teeth differs for each application end in tins embodiment shewn is a hole saw blade 12 with a plurality of cutting teeth 1 b. The bole saw blade also contains cireelar apertures 18 in its cylindrical body to redone material needed in the construction. of a hole sew blade and provide a exmfiog effect. At the opposite end of the hole saw blade 1.2 is the engagement means by which the blade is attached to the bole saw body 14.
The engagement lug 20 extends longitudinally tom the end of the hole saw blade .12 and shown in this figure is a plurality of repeating dog leg shaped engagement Inga 20, whereby, the lug is comprised, of a rounded recessed portion 2:2. a rounded protruding portion 24, and a substantially fiat portion 2d, Between each repeating dog leg shaped extending lug 20 la fit® base 2S of die bole saw blade portion which baa a width greater Hiatt the width of the substantially flat portion 2d of the extending lug 20.
The hole saw body 14 includes; a oyliuddeal body which may contain slots 30 extending longitudinally along the length of the hole saw body to assist with the removal of the core and reduce the amount of material required for the nutnufaciure of the bole saw body. The hole saw body 14 further includes at one end an attachment means to attach ibe hole save body to the bole saw blade 12. The attachment means comprises of an engagement lug 32 extending longitudinally from the end of the hole saw body 14. Shown in this figure is a pimuiity of repeating dog leg shaped engagement lugs 32, whereby, the lug is comprised of a rounded protruding portion
Ms & iotmdud mceased Feitlaa 36, and a mrhaiaafedly fiat pofekm IS, Between eaeh. repeaimg dog log shaped extending log 32 is the surface 40 of the hole aw body.
Shown so Figure lb is the hole sow blade 12 and the hole saw body 14 abutted together so. a first pos ition* In ibis position fee lid portions 26 of fee engagement lugs 20 he substantially parallel with the fiat hole saw body surface 40 and fee protruding poitloa 24 o.t fee dog tagged engagement lugs has not entered fee receded portion 36 ot me bole sew body esrg55.gent.ent lug 32. In tins first position, fee hole saw body 14 and bide sate blade 12 are removable and fesettaMe and not looked together. Figure la shows the bole saw body 14 and hole saw blade 12 rotated to a second position thereby looking fee abovementioned blade to the body. The direction of rotation, of'fed bote saw enables the Made to bo retained daring use. Such art aferoinnent means so ay teen ntsiiae an mfetfercnce fit in bather reefer fee blade to the bndv.
Hgnre 2 illustrates 55 eross sectional shew of the hole saw body portion 14 and the nolo saw blade portion 12 locked together. Figure 3 illustrates the stone awaugemenf m a top view. Shown in these figures, at fee opposite end to fee hole saw tnade portion, is the means or fixing tire hole saw body 14 to a mandrel (not shown). Also, a centra! bore 42 ra adapted to receive a drill bit (not shown) wherein fee drill hit extends borough and beyond fee bole saw blade portion 12 to guide fee bole asw. Ifelea 44 md4$ are adapted to be a component of fee used fe fix fee hole saw body 14 'Wife a base or mandrel (aoi shown), figures 4a, 4b and 4c illustrate an alternative embodiment of fee present invention, ^ present feventioo Includes further means of retaining the hole saw blade portion to fee bole saw body portion. Is this embodiment fee hole saw Made portion 12 includes at. one end at leant one cutting element W end at fee ofeer end an engagement means by which fee Marie is attached to fee hole saw body 14. t he engagement means on fee hole saw blade 12 further inclndes at least one sfegagement log 48 extending longitudinally .from fee fiat edge 50 of fee bole saw Made portion 12. Shown in feta figure is a plurality of repeating teeth shaped engagement lugs 48 whereby fee lug projects at an acute angle from, fee bole saw horde portion 12 with fee angle of fee ieadfeg edge of fee lug 48 being greater feau fee angte of fee trailing edge. The hole saw blade portion 12 further includes at least one tisfongatat: tmmk& 52 with m angular depression 54 approximately about b&lf way up foe side wall of the rectangular recession, The attaekuwit means oolite hole saw hodv 14 is adapted to receive the ahoyefoCPtloned engagement means la & 'Ilf Ittdtdaumt a plurality of engagement tup 56, wiefolog IfigitidiMly Ifofo foe end Offifoiole saw body M, and adapted; to he saw blade lugs 48, =:^g@Nat -sse®i^f^|si^i!E;::ii»w Ιϋϋ^ 12 to the hole saw body 14, foe present embodh^ one retention clip 60 loogifodiaaily shdeabie hem a font fo aaCedbd position. 1¾¾ addidoual retention device safeguards against the blade ufoatlntionally being removed through misuse or rough handling. The retention dip includes a tab 62 which a user asserts force Ufxm to slidably move the retention dtp from a first to a second position, la doing so the extension stop 64 is moved op into foe recess 52 provided is the hole saw blade 12, A projectioubd is ada|t«i: foim wedved by a depression 54 and ensures fog f the dip is retained In foe second and locking position,
Figures 4b and 4c show the hole saw blade 12 and. attached with foe rdea&m dip 60 in the fet and. second positions, f&e Irst position of the retention clip 60 allows fof Mle w» blade portion 12 to be inaetted and removed from the hole saw body portion 14, in the second position foe retention dip extends into foe hoie saw Made portion recess 52 thereby looking the hole saw Hade to the Idle mm body*
The retmfom clip 60 slides along fonglmdfoaliy extending tails 68. Thesemfts are formed by pressing foe steel about the slot used fo bwhie foe«etenlfon clip 60 fo order to create a reduced foidfops of foe rails when compared with foe thickness of foe bole saw body 14, The reduced thickness of the rails allows the retention clip to he foesame foldknms as the foaly and as a result it does not protrude radially tbsm the hole saw body 14. Thus allowing foton^pdrilh^i appieti^^ dtiiog depth to be limited to only foe depth of foe hole saw blade portion 12,
Figure 5 diostrstesa wosa sftditfofo view of foe hole saw body portion 14 and foe hole saw blade portion 12 locked together with the retention elip 60 in foe second and locked position, Ppfk i 11¾¾¾ the same anfangefoewi m s top view. Also not show» in $mfigureis foe mam of ixiag the hole saw body to a tloMroI or base, lipips 7a aM 7h illustrate a thither alforaative emtxfolmeut of the present mvmiiom lli.^eseni of isiaiofog foe idle fow: blade jfoih^ in foe Mo saw body potbon. in this embodiment foe hole saw Made portion it htefodes si one md at least one cutting element id sad at foe oilier end ah oapptooot moaos by which the ilgda la iitaohad ίο foe Mbs w body 14*
The engagement foetms pp foe Me saw blade 12 farther isfofodes at least one engagement Mg ?0 extending longitudinally fonn. tie bat edge 72 of tbs Mo oap Made portion 12» Shows m this %ure b a plamliy of repeating rootartgolar ipp t«d m M to m$>m that the width of each lag is foe samp, at some poist m the tisMit opening there is one larger than Mifom pp 74 between the tup 70, His allows the same tooling equipment to fee used *m the mannfodfoe of all diameters of help sap Mdes and ensures that the bole saw body and the hold MW Made can only be aligned for locking in oao parioolar position, lie hole saw blade pertfoa 12 bather mektdes an annular groove 71 on the inside surface of foe extending leas 70. The adachmeni nreans o.o foe iota saw body 14 is adapted to receive the sbovemeoikmed fogs 70 fo so iosertabie manner* the attaclrdeat means comprises of a plurality of engagement fogs ?S and gaps SO between these legs. The fogs exfood longitudinally fiom the end of the bole saw body 14 wad are adapted to be received in the space 72 between the extending halp^W blade fogs 70, The hole saw body 14 also includes ooe larger width fog Z2 adappi fo be received in the larger width gap 74 of the bole saw blade 12. The hfefo saw body 14 also Author includes an annular groove Μάη tie nfolde sfofMo of the ewfondtng fogs 78,
To farther mfoin the bole $sw blade 12 to foe hole saw body 14, foe present wnboditnent used a C city IP ItwwtM fofo foo afeovmneaPoned annular grooves 84 and TPf Mwgmtowa ^e aligned oneefoe |plo saw blade 12 is inserted info foeMe saw body 1.4 and foe C dip is hfosed so as to posh pnlwords into foe abased foes tafofoing the blade to die body. To remove foe blade fam foe body and release the C dip, tar object is paced into the aperture poylded II to dMoige die € dip. la Figures 8 and 9 it & showntlmt the dip doea not. extend radially ftxaa did hole saw* TMs allows thrnughuMllmg sad. places no liaamtkat onto possible with such an arrangement
Figure 10 shows the same embodiment as ί» Figures 7&and 7b Fat wilreat tb® fmvMoo ior a C clip* la this aatboditaeai Ih® hoi® saw Made 12 is abated to it® hole saw body portion 34 by an Intervene® St lit® aid® wall p af &® apoaihti lag of the hlad® portion 12 is taacMned m snob m angle* tskteg lata oowuderadoa p®pmk& of steel» that when it is received by the side wall 92 of the bole sew body lag 78» it is restrained from movenseni.
Figures 11a sad I. lb illustrate a farther aUeraetiv© emhodaoeut of the present invention, The present Invention includes a further wmm of aUaelang the bole saw bled® portion 12 to tbe bole saw body portion 14 whilst retaining the same insertion means m stem in itgore 7a and lb.
It iaa ombodhaoat the hole saw body 14 iainsr ahidd®s at !®^ pie ioebiag strip 94 projecting loaglhtdiaally Croat the hole saw body 1.4« Shown, in this Sgure Is three looking ship 14, spaced equally about the eiroate 14, Th® looking ship 94 Is attached at ead to the hole saw body 14 with a rivet 96 alttegb sitomafive methods of Mutchmeat: atay he used, such m a spot weld. At the other end of lb® loekiag snip 94 is a protrusion 98 adapted to he received by aa aperture IS on tbe cylindrical body of tb® bole saw blade portion 12. Thereby the hoi® saw blade 12 is locked to the body 14 as tb® locking strip h biased Conn a Seat to a second position and the protrusion 98 is pressed into the aperture 18 whist in das irst fhslhon. 1¾ remove the blade, the pUsitusibos are pressed: Inward thus roiraotiig the locking snip 94 tb its second position and allowing the hole saw blade 12 tb he removed
Figure 12 shows three dilTereolbple sow blade configurations adapted to be: attached to a hole suss body 14 using the previous mhbps|ineat''e method of using a C clip to ensure attachment Shown is a single tooth Mid saw blade ! 00 with single carbide tipped cutting eierneat 192, Such an armigeuteal is typically adapted tor eethag composite wood surfaces. Also #own is a serrated steel colter Mad® 104 whh a plurality of teeth 106, These tapir nray also be tipped with alterative material for increased durability and the ability Also shown is a diamond or carbide gdf encrusted blade I OS with diamond eamiStei tooth elements 110 for erbilng abrasive mstyrials suetr as glass, omndcxV stone, asbestos and some plaslib smlaees< Other configurations of bole saw blades m$ cutting elements see a usee to select deoo^mgpt i%appiieation, 1¼ present invention allywsthe nshr to ahk|e away of blade types in aeonapact and more cost elfbetlyb manner, it w important to understand that the present invention teaches a removable' bole saw blade that is adapted to be removably attached to a hole saw body. The advantages of tins is that the user only needs to have one hole saw body and several blades to be able to on through a range of materials. Not only is this more space effective and cheaper but it has the result that once a hole saw blade has wont oat it mm be simply replaced and used with the original bole saw body. Ilia has the eiegi on saying:;m mietiais md thus cost. features fiat althotigh not essential are preferred ia oomteoiioa with this bole saw. Tbas it is desirable that the locking mechanism that locks die blade to die hole saw body is contained within tits footprint of the body, tlrat is, does not pmkiale Id ahy' direction, enabling the hole saw lb he used for deep drilling, locking; means may Indeed protrode (as will be aeon In a minute) gmidded that the opermor is award: of the ibhitmions that this may cape m tldllbg. Figure 13 illustrates such a locking mechanism where a pivotable lever 112 pivots trow bole saw body 114, Hole saw blade 1 Id, that is a wood drilling bhule, ineiadea a protruding button lib that ia engaged by erd out 120 in lever 111,
However a preferred inching means ia illustrated in Fig we 14. Here a slidable log whose thickness is the same as the hole saw body 124 includes internally facing grooves 12b that engage a correspondingly shaped protrusion 128 of the bole saw body. The log is thus restrained in pipe and cm only move eg or down to Ipk and mlosk the hole saw blade 130, the lag sliding within aperture 132 definedboth by she hole saw body and the hole saw Hade. To ensure that once the lag has slid up and engaged blade DO it rwuains in place and dim sot slide down a press stad 13d way he used that :engages eemespendipgiy shaped aperture !3d in the hole saw body and pmvehts the lag horn sliding. To anloel: the blade from the body the stud 134 may he depressed theo. the lag $E3 dovm to unlock the blade fogt &e hody* όαυβ the hole saw Wc is attached to the body ^otlgiMllaa of thevarious lags 139 Shot t®ve oeeisatulle! aedaces to the loagfeidiki Mis of the tew body and Hi* on that the Made is fenly locked to the body cod o«ot lisiai^ga itself <Mm that &e various lop ate typically not symmetrical tm aqilBy sgaoad around the Ude a marker may be used ο» both the feWs and the body (spt^ow») to assist In the iisr bdheelly tbs body,
Ydbotb^vsiiys of locking the log in place may be used M^|;i enilbdlment where a groove msy engage protruding pins and so on* It is sot intended to limit the hwention to a partieolar way of earning the locking to occur.
Mpa# ί I tkoogh to IS iiltkttstehtprittdpie the present ftreeotieo, Figure IS iikMmtlog tbeMk saw body 1SS \vib the locking meehsoisor 122 of Figureldj Figure 16 illustrating a metal hole sawblade 140 attsbbed to the body* Figure 1? hlastraiing a concrete drilling blade 142 attached to the hody!38 mi Figure 18 illustrating a timber drilling Made 144 attached to the body.
Further advantages and improvements may yery well bemade to the present iaveatioa without deviadpg from its scope. Although the ioveotiph las bead ilowtt tod described m what is conceived to be tbe most practical and preferred embodiment it is recognised that departure may be made thmefkun wffria Me scope and spirit of the invention» which Is actio be limitedbs tbe datails <^Mpp|iherm» but is to be amuded thelnll scope of the claims so as to: embrace W *# pi pfdlyMcM leviocs aod apparatus, I» any daitM ^st Ibilop aod htvertbotg tbe context requ ires otherwise doe to express language or accessary implication* the word '^comprising” is used hr the souse of'hneludmifk i.e* tbe features ^edited may be associated with further ibaturcs la various embodiments of the Irreention.
Claims (5)
1. A hole saw assembly comprising: a hole saw blade comprising a cylinder having a first end and a second end; said hole saw blade having a longitudinal axis extending between the first and second ends; cutting teeth extending outwardly from the first end of the cylinder; lugs extending outwardly from the second end of the cylinder; a cylindrical hole saw body selectively engageable with the cylinder of the hole saw blade; wherein the hole saw blade extends longitudinally outwardly from a first end of the hole saw body when the hole saw body and hole saw blade are engaged; lugs extending outwardly from the first end of the hole saw body; at least one locking member provided on one of the hole saw body and the hole saw blade, wherein the at least one locking member is integral with the one of the hole saw body and the hole saw blade; and wherein the at least one locking member is selectively moveable in direction parallel to the longitudinal axis between a first unlocked position and a second locked position; and when the at least one locking member is in said first unlocked position, the hole saw blade is removable from the hole saw body and when the at least one locking member in said second locked position, the hole saw blade and hole saw body are lockingly engaged with each other and are prevented from moving longitudinally away from each other; wherein the cylinder defines a plurality of cavities on the second end thereof; and each cavity is complementary to one of the lugs extending outwardly from the first end of the hole saw body; and wherein the hole saw body defines a plurality of cavities on the first end thereof; and each cavity on the hole saw body is complementary to one of the lugs extending outwardly from the second end of the hole saw blade; and wherein each lug on one of the hole saw blade and the hole saw body extends into a corresponding cavity on the other of the hole saw blade and the hole saw body.
2. The hole saw as in claim 1, wherein: the cutting teeth on the hole saw blade extend longitudinally upwardly and are oriented at an angle relative to a direction of rotation of the hole saw blade; and the lugs on the hole saw blade extend generally longitudinally downwardly in the opposite direction to the cutting teeth.
3. The hole saw as in claim 1, wherein the at least one locking member has an inner circumference and an outer circumference; and wherein the hole saw body and the at least one locking member inner and outer circumferences do not protrude radially from the inner and outer circumferences of the cylinder of the hole saw blade.
4. The hole saw as in claim 1 wherein the lugs on the hole saw blade and hole saw body engage in the cavities defined in the other of the hole saw blade and hole saw body upon rotational movement between the cylinder of the hole saw blade and the hole saw body; and the hole saw body and hole saw blade are secured together and are prevented from moving longitudinally relative to each other.
5. The hole saw as in claim 2, wherein the cutting teeth on the hole saw blade are oriented at an angle relative to the direction of rotation of the hole saw blade; and the lugs on the hole saw blade are oriented at an angle relative to an opposite direction of rotation of the hole saw blade.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2015264912A AU2015264912B2 (en) | 2006-11-14 | 2015-12-04 | A hole saw with interchangeable cutting blades |
| AU2017203634A AU2017203634B2 (en) | 2006-11-14 | 2017-05-30 | A hole saw with interchangeable cutting blades |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2006906340 | 2006-11-14 | ||
| AU2007321707A AU2007321707A1 (en) | 2006-11-14 | 2007-11-14 | A hole saw with interchangeable cutting blades |
| AU2012201549A AU2012201549A1 (en) | 2006-11-14 | 2012-03-16 | A hole saw with interchangeable cutting blades |
| AU2015264912A AU2015264912B2 (en) | 2006-11-14 | 2015-12-04 | A hole saw with interchangeable cutting blades |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2012201549A Division AU2012201549A1 (en) | 2006-11-14 | 2012-03-16 | A hole saw with interchangeable cutting blades |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017203634A Division AU2017203634B2 (en) | 2006-11-14 | 2017-05-30 | A hole saw with interchangeable cutting blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2015264912A1 AU2015264912A1 (en) | 2015-12-24 |
| AU2015264912B2 true AU2015264912B2 (en) | 2017-06-15 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015264912A Ceased AU2015264912B2 (en) | 2006-11-14 | 2015-12-04 | A hole saw with interchangeable cutting blades |
| AU2017203634A Ceased AU2017203634B2 (en) | 2006-11-14 | 2017-05-30 | A hole saw with interchangeable cutting blades |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017203634A Ceased AU2017203634B2 (en) | 2006-11-14 | 2017-05-30 | A hole saw with interchangeable cutting blades |
Country Status (1)
| Country | Link |
|---|---|
| AU (2) | AU2015264912B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262474A (en) * | 1964-03-11 | 1966-07-26 | Black | Hole saw assembly |
| JPS59107815A (en) * | 1982-12-07 | 1984-06-22 | Kodera Asaji | Core drill |
| JPH0376608A (en) * | 1989-08-18 | 1991-04-02 | Sanwa Daiyamondo Kogyo Kk | Cylinder type hole saw |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59214506A (en) * | 1983-05-20 | 1984-12-04 | Sanko Seisakusho:Kk | Pipe machining device |
| DE8901906U1 (en) * | 1989-02-17 | 1989-05-24 | Entwicklungszentrum für Zerspanungstechnik GmbH & Co KG, 7630 Lahr | Device for removing damaged areas in rubber parts |
| JPH0747244B2 (en) * | 1991-02-19 | 1995-05-24 | 株式会社ミヤナガ | Core drill |
| US6705807B1 (en) * | 1999-11-24 | 2004-03-16 | Black & Decker Inc. | Hole saw and connection method |
| US20050105981A1 (en) * | 2003-09-26 | 2005-05-19 | The M. K. Morse Company | Hole cutter and method for producing |
-
2015
- 2015-12-04 AU AU2015264912A patent/AU2015264912B2/en not_active Ceased
-
2017
- 2017-05-30 AU AU2017203634A patent/AU2017203634B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262474A (en) * | 1964-03-11 | 1966-07-26 | Black | Hole saw assembly |
| JPS59107815A (en) * | 1982-12-07 | 1984-06-22 | Kodera Asaji | Core drill |
| JPH0376608A (en) * | 1989-08-18 | 1991-04-02 | Sanwa Daiyamondo Kogyo Kk | Cylinder type hole saw |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017203634B2 (en) | 2019-08-08 |
| AU2015264912A1 (en) | 2015-12-24 |
| AU2017203634A1 (en) | 2017-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |