• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An apparatus tar telescopically extending the shaft length of a tool including a handle with a circular or noncircular hollow core shaft with at least one longitudinal extension channel, a circular or noncircular hollow shank wherein one end has an internally threaded drive ring with at least one tab for insertion into an extension channel, and the second end has a head assembly to receive various tool fittings where an externally threaded adjusting rod extends into the hollow shank anal is engaged in the threaded drive ring and is operated by a rotatable adjusting knob is attached to the adjusting rod, and a lock assembly is used to selectively eliminate rotation of the knob; the lock assembly comprises a pair of facing spline faces which engagingly prevent rotation of the knob.
    公开号:CA2372328A1
    申请号:C2372328
    申请日:2002-02-21
    公开日:2002-08-21
    发明作者:Randy C. Durrant
    申请人:Randy C. Durrant；
    IPC主号:B25G1-04
    专利说明:
    TELESCOPING TOOL HANDLE BACKGROUND OF THE INVENTIONThis invention relates generally to the field of hand ~too!s, and more pauicularty to an apparatus for telescopically extending the shaft length of a tt~ol used for fia rvnR a fastener or the like wlile protecting the critical mechanisms for extending the toCl jliaft by mavix~g the mechanism inside the handle. An additional feature ofthe inve~aion is adaptationi~O t se multiple replaceable tool ends f for performance of rr~ultiple tasks.The present application claims priori rSf from provisional patent appiicadon muuber 64'' 183,878 entitled TELESCOP.IIvIG'rOOL HANDLE, fled FEbrua~y 22, 2040.All too often. the problem is found in the field, when a >user must Gccess a fastener that is in f difficult location. Traditionally, auserrnusthaveavailable fo'rre~dyaccesstoolsofmultiple lengths.Short foals must be assailable for working in restricted søace~, lung tools must be available for reaching the tool into a restricted space or moving the user awaly from the fastener.Short or "stuhby" tools are useful and often necessary fdr working in a confned spare, but, suffer from au additional Sliol.i:.()lnlllg of being small and fherBFore having srnalI handles that are frequently difficult to grasp and apply sufficient torque to type fastener. ViJhile longer tools do not suffer the same shortcoming's as short tools they have therA separate problems, including being large and~therefore difficult to store. ' ' ' ' . ~ ' ' As a res~~it, most conventional serewdrIvers and tool handles are of rrlediurn length and perform adequately in most circumstances, but, cmnot b: used irk all eircumstar~ces neeessitatingthe user owning and using multiple drivers as the task requires. SLfi~ARY OF THE 1NVENTiON7"he tool industry over the years has innovated new and Useful too! designs to meet specific industry requirements for additional tool. utility. Tool s of multiple functionality have entered the too industxy, and have found valued place in many tool boxes. fielescaping shaft length tools can improve work efficiency by reducing the number of tools of that a user must have available for use. Thus a user can perform snore work in a given time.The invention is tv provides a telescoping shank forvtelescopically extending the length of a screw driver, socket end. or a urrench; making the tool mote ~~ersatile than existing tools having a smooth, non-thxeaded shank, which is easy and relatively irtexgensive to manufacture. The telescoping mechanisms is housed internally i3t the too! handle, providingprotecrionto these critical mechanisms, and making the tool more d~endable, and ot' greater utility, The telescoping of the tool is cor~troiled by a lockable adjusanent k,ZOb located on the end of a handle ~so that a' user can easily alter tile length regardless of the location 'of the tool.' The telescoping shank is nonxetnovable and can be integt~ated into ailandle minitnizingthe sizeofthetoo:while protecting the adjustment mechanism..4n appwatus fur telescopicallyextending the shaft idngth of stool, comprising: ahandle with a circular or noncireular hollow core shad with at least tine iongit5.tdina.a chaa~nel in combination wiL't ahollowshank with circular or noncircular cross secti on, with. inikegral, internally threaded driverir..g on one end. The drive ring has at least one associated tab for insertion into the longitudinal channel.The second sham: end has s head. assembly to receive screw drier, socket;, nr w-rsnch tool fittings.Circular sha$ and shank cross sections are assuc.iated with the screw driver or socket configuration.in addition, a noneircular or elliptical cross section, is associated with a wrench configuration., An a . -eh-ternal 1y threaded adi usting rod engages the threaded drive ring, and extends into t:~e hollo w shank.A rotatable adjusting knob is attached to the adjusting rod. A lock mee'~anism which is integral to the adjusting knob attached to the handle which is used to seiectiv=elf elirn.inata rotRtion ofthe knob. The lack assembly comprises a first friction washej~ attached to the knob and a second friction washer attached to the handle wherein the washers engage eaci~ other to prevent rotation c~f the knob.Alternatively, the lock assembly comFrises a first splined portion atta~c.ied to the lcnoi.~ and a second splined portion attac,ied to the har_dlt wherein the portions engage each other. A spring, and spring retainer syszern is attached to the adjusting rod to provide engaging force an the splined portions. Akey is attached to the adjusting rod as a means of transferring rotational farce between the adjusting knob and the adjusting rod. BRIEF DESCRIPT10N OF TfiE I~RAWl3v'GSFigure 1 is a perspective view showing the fu~st crnbodirrient of a telescoping tool according to the present invention; showing a partial cut away internal view of the drive mechanism.Figure 2 is a iengitudina! sectional view taken slang thd plane of line ~-2 of Figtwe 1 Figure 3 is an exploded vievr of the telescoping tool hand'.e showing an alternate embodiment of the locking mechanism..Figure 4 is a partial cut away view~af the first einbodirnent,of the telescoping tool handle showing the adjustment mechanism and the locking nzeelianisai.Figure 5 is a longitudinal cross secti«n;it view of a srcond embodiment of the telescoping tool handle showing the alternate shank constructs«n.Figure 6 is detailed partial view of the second embodiment of the telescoping tool handle showing a crow-foot wrench attached. Figure is a partial exploded view of tl~ta second cmbo3iment of the telescoping toe 1 handle showing the alternate locking rneehanism.Figure 8 is an isometric uiew of an alternate embodiment of the telescoping tool handle showing the transparent adjustmen: window. DE9CRIP'fION OF T~~IE PItJ~FERRED ElviBUDIMENTReferring first to Figure 1, which shows a first embodiment of the telescoping shafted tool 1 ~ .The first embodiment is generally in the form of a screwdriver having a handle 12 and a shaft la adapted to receive a conventional replaceable tip I 6. The tool ~ 0 additicsnally has an adjustment knob 1$ for extending or retracting the shaft 14 of the foal 10. The extens:iun mechanism 20 of the tool 10 is contained within the hanale 12 and attached to bdth the adjustment knob I8 and the shaft 14.The shaft :4 is a~hollow tube that, while being shc~sivn as circular in cross seotion, need not be circular and is formed having an adapter 22 on th.e distal end w receive a replaceable tip 16. Astandard replaceable tip 1d is formed from a :; ineh hexagonal rid and has apeint on the one end for rnatine with a screw head or nut. The paint may be a fiat blade; phillips, Torx,:~ Robertson, or a nut driver having a female hex fi.~r accessing a standarc here nut. It is preferred, therefore that the internal follow 24 of the shaft 14 be in the form of a regular 'J. inch hexagt~n to utilize standard replaceable tips 16. Standard replaceable tipa 15 arc a ~fungible item well known in the art and readily available in the marketplace.The shaft further can have a means for retaining the replaceablz tips 16 contained within the holl.ow24. The means for retaining the replacetnent tips 16 are well known in.the art and can include a magnet for magnetical 1y balding the tips 16 and various rnechalucal mechanisnus such as deformable clips or deforrrable rings con:ained within the hollow porfion i24 of the shaft 14. Alternately, the retaining means may be may be constmcted as part of the repl~c:eable tip 16.The shaft 14 maybe constructed fi~am arty one of a number of rrateuials, including, metals or polymers having the necessary propee-ties of workability; strength, and u;wa6iiitv. A prefeaed z:zaterial is a fein~ous alloy.The proximal end 26 of the sl~ft cainies the drive ntechanisma 28 ~l~ich is a hollow plug having an internal threaded hole 30 and a:pair of extending drive'tabs 32 whicIz mate with the handle..'he drive mechanism 28 may be constructed from anc suitablex material such as a metal, or a hard polymer and is preferably constxucted i~ um a ferrous alloy having suitable laropeities, which include, strength, durability and workability. Additionally, the drive mechanism must slide within the channels 36 of the handle 12 without excessively wear or galling the channels 36. t he drive mechanism 28 may be constructed integral w.°ith the shaft 14 or may be fabricated seperstel5~ and attached using any suitable nears of attachment, such as, weidiiag, fusing, discrete fasteners, or adhesives.The handle 12 is constructed, generally, as an elongate cylinder a length and diameter suffcient to contain the drive mechanism 28 and the extension mechazusm 20. Additionally, the handle, is. sued to be cornfortabIe gripped, by a user. T'he handle as shoum in Figure 1 had an embossed external surface 34 to cooperate with the user and provide an enhanced grip. It is ~anderstood chat the handle 12 znay be formed in other suitalyle shaptes, such as, having longitudinal external flutes, or being non-circular to enhance the gripability.The handle 12 is at least partially hollow to contain thedriLe mecharoisrn 2$ and theextension mechanism 20. The haadle further has a pair of internal channels 36 for receiving, the drive tabs 3Z.~Nl~.ile a pair of drive tabs 32 and chancels 36 is preferred. it is miderstood that at least one is .. required. The inteznel channels 36 extex:d from the proxitrzal etZd of the handle 12, adjacent the adjustment knob 1 B longitudinally to near the distal enti of'tlte handlz 12. 'fne internal channels 36 limit the longitudinal movernent of the drive tnechar;ism 28, and therefore the extension of the shaft I ~. The channels 36 extend from the proximal end of the handle 12 essentially tlae length of the hollow portion of the har!d~e limiting the longitudinal extetision of the drive mechanism 38. A plug 37 may be inserted into tl~e izoliow in the proximal erd of the handle 12 to retain the drive mechanism 28 and limit the contraction of the driGe mechanises 38.The t:~ndle I nZay be constructed from any number of suitable materials, such as, hard polymers, metals, or hard fine grained wood having the necessaiy properties of strength, durability, and workability. VJher. the handle is constructed frou~ a polyznez, the ~olpner may be opaque, t!.~anslucerzt. or transparent, In some of the embodirnents, as desrribeci below, it is, preferred that the polymer be transparent or translucent. Additionally, rle handle 12 or at least the portion of ine handle forming the inter~zal cliawels 36, must have sufFzcient dsr~ability to a(lowthe repetitive sliding of the drive tabs 32 therealong. Preferably, the drive tabs 3 and the internal charnels 36 will be self lubricating to allow the sliding of the drive tabs 32 without bxcessive wear. Alternately, a separate lubricant may be t>sed to reduce wear between the drive tabs 32 and the channels 36.The adjustment knob 18 is attached to the prc~ximai end of the han3le 12. The adjustment knob 18 may be of any suitable shape such as round, oval, or "~'" shaped and may be sized having either larger or smaller diameter than the handle 12, The size of the adjustment knob 18 may have a larger diameter to enhance the ease of gripping by the user, the maximum size is limited only that as the size grows large:, ti-~e ability to use the telescoping ~xterzsion tool l 0 in a restricted space becomes comprazrased. Similarly, the diameter of the adjustment knob 19 rnay be smaller than the diameter cfthe handle 12. the minimum dianeter of tl=a of the adjustment knob 1$ is only limited by the deateiity ofthe user, that is, ar. the diameter of the adj usitnertt knob 1 E is reduced, it will become ifficult for a user to grasp and turn, ultimately, becoming so snvall that another tool becomes necessary to grasp the adjustment knob 18.The adjustment l:rob 18 may be censtn~cted froth any su;table material, such as, metal, nol~zners, or hard WUOd. It is preferred that to adjustment knob 1$ be constructed from the. same material as the handle 12. The periphery or the adjusvr~ent knob 7.8 n.tay be smooth or have an embossed pattern or a polygonal or otherwae irregular shape to enhance the ability of the user to grip and tom the adjustment knob t 8. The adjustment knob I 8 may be attached to the adiustr~aent rod 38 using any suitable mcthodofattachmcnt such aspress fit, welding or fusiort, ormechanical Fasteners.One preferred example ef attachment includes the formation of internal grooves on the pet~iphery of a center hole in tae adjustment knob 18 and fiurraing mating external ridges on the outez surface of the adjustment rod 3f~. Alternately, at least one key 35 rnay'oe used to retain the adjustment knob I $ and prevent rotation upon the adj ustment rod ; 8. Vvhen lleys 35 is used, keyways must be milled in the adjustrttent rod 3R and matching key~x,~ays in t1° in adjusunent knob I8.The adjustment knob I8 has an admstment rod 38 extending longi~:adinalty therefrom. The adjustment rod 38 extends from the adjustment kt:ob 18 through the interns115~ threaded hole 30 or the drive meoha~7ism 28 and is exrernally threaded to ergage the internal tl;reads of the threaded hole 30. 'W a threads 4(1 are preferably of unite coarse pirvh such as one to three: threads per inch so that very few turns of the arijustment knob 1 & wil ;tlcve the e.xtensior_ mechanism 20 through the entire range of motion. The adjusrrnent rod 38 may be c,:n~sirur'ted fom any :;i:itable material having sufFtcient strength astd durability. Suitable materials would include hard polymers and metals. Preferably, tl:c a3justriucnt rod 38 is coctstcucted from an iron alloy tree is suitable to engage th~threaded hole 30 and sufficiently durable so that t~'tere is a minimum of wear between the parts.The locking mechanism 42, xs shewt, in Figure 4, consists of s pair cf frictior. washers 44.1, 44.2 which when urged togethrr restrict or prevent the rotation of the adjustment knob I $ ~t~ith respect to the r~ae-~dle 12. The locking mechmism furt~lter 42 further includes a lock kroh 46 and a thrust washer 4$. The lock knob 46 is threaded'.y attached to the proxirnal rnd of the drive rod 38 using the 1_oek knob 46. A thrust face 50 is an expended di~trrneterportior.~ formed on the adjustment rod 38 for engaging the distal face of the plug, 37 sa that wfien the look knob 46 is tightened, the adiusunent kreb 1 a, the locking washers 44, the plug 37 and the adjustment rod 38 are draw together a.-td prevented from rotating witr~ aspect tt~ ea;.h other. . _ , While it is not necessary, it is preferred that a protector cap 52 be included to cover the locking icnoh 46. The pratectax~ cap Sr is used to protect the tlv~eads of rl~e locking knob 46 from pnvironrae:~tal debris or abuse Pram tine user-. The protector oap 52 ma;~ be fabricated from any suitable material, such as metal, polymers, o~~ wood. It is preferred that tlt;° protector cap be formed from tiae same polynmr as the handle 12 and be molded i.ttt~gral vuith the handle 12.In another embodiment of the invention 110 as shown in Figwwe 3, shows an alternate embodiment of the shaft 114 and its assembly am the ~re.ferred embodiment of the locking rtechanism 142. adapted to accept replaceable tips : lts designed to grip and Thereby turn standard hexaganal nuts.V~ bile the draw:r_gs show a roLtnd Shaft 114, ut ibis enoodiroent, the shaft 114 may be and is preferablypolygonal square iri cross section. When a nun-round shaft I 14 is used, dritre mechanism s can be modified to ohviate the drive tabs 132 as the sha_~R 1 I4 can >,e fitted in an appropriately' shaped hole to receive the limited torque loads of this embodiment.In this embodiment, the shaft 114 has been modified by changing the cross sectional shape to a rectangular tube. or a "C" shaped channel, as shown m ore cleanly in r figure b. The replaceable tip.commonly caked a crow foot wrench 117 has been placed into dte sham 11 ~I. i he craw foot wrenches 117 are designad to be placed on the end of a sduare drive wrench or exte3sion as evinced by the square recess I 19 formed tlierein, and be used to access star~dazd sized hexagonal nuts in otherwise inaccessible .restrict;d spaces. It :zas teen discot-ez~ed that the crow foot w-r:enches can be gripped by the outez edges and used ns a replaceable tip tin a linear wi~enc_'.t, fmjcrioning much like a variable lengtiz open end wrench.The shaft 114 is rectangular in shape is sized to allow a user to apply a pushing or pulling force to the handle 112 to rotate a hex nut held in the crow foot wrench 11'7. This requires the shaft to be resilient yet essentially non-bendable aloeg its length. The shaft 11~1:~ay be fabricated from numerous material having the desired properties, such as vaa~ious metals, polymers, oz glass filled poIyrners. It is preferred that the shaft be constructed fiom a steel alloy.The sha$115 has an ittterio~~ opening or channel 115 sized to receive a c~~ow foot wrench 117, as sltowlt in Figure 6. The fit of the crow foot wreath 11 to the ~hanuel should be a close or interference fit sa that the crow foot wrench is retained d~.u~ing use, but; can tae readily removed when srothcr replaceable tip 1 t 6 is needed.The preferred embodiment of the locking mer_hanism 142, as Showi:i in the exploded view of Figure 3 consists of a pair of mating splined faces 144, the first spEined face 144. i is formed on the proximal end efthe handle 1:.2 and the second splined face 144.2 is 1-orrned on the distal end ofthe v . .. adjustment knob I 1 ~. The splined faces 144 are shov;.~ as having a rnultiplicit~~r ef approximating a "~" shaped teeth 145 in Figure 2 and approximately gew shared teeth 145 .n Figure 3. This mcreiy showy two of the meny Shapes the teeth 145 of the splines faces 144 xnay have. The teeth may else be shaped as intermeshing rectangles or interrne~hing curved surfaces. Ir.: one embodiment, the teeth I45 of the one splined face 144. I are approximately parabolic is shape and the teeth 145 ofthe other splined face I x.4.2 are shaped as a mating negative parabola. Mr i$ prefen ed tlia.t at least une of splined faces 144 have somewhat pointed teeth. The shape of the t~euh I45 can be varied, and by having at least one of the splined faces 144 having pointed teeth 145, the adjustrne.tti ltrcob 118 becomes self locking. That is, for exarnple, using rectangular shaped teeth, when the ad justinent knob 1 I 8 is urged away from the handle 112 to dise:~gage the splined faces 1 ~4 so that the .adjustment knob I i 8 may be rotated with respect to the handle 11 to alter the extertsia!t of the shaft 1 I4 and released, it is likely that the splintd facAs 144 will not mesh and must be manually tur~ud, slightly, to allow the splined faces 144 to engage. While this is a minor i.icc~nveni~nce. it can be avoided by the use of pointed teeth I45. V~'ith painted teeth 14i, iher a is a minimal, if say, flat surface of splined faces 144 for the teeth 145 to rest upon, 2nd upon release, the adjustment knob 118 wiil be drawn toward the handle 1;2 'b~~ the tension of the adjustment Tile quantity of teeth 145 on each of the sp.lined faces I 44 much ccn-espond and the actual numbermay vary in difl:'emnt applications. The number of teeCh I 45 de$nes the number of increments the adj ustment knob 1 I 8 can have per revolution. The selection of the number of teeth I4~, is at best, a compromise between a an infinite number of teeth 145 which would allow extension of the shaflt 114 to an infinite numrer of po3i~i ons and a small nun~.bex of teeth L45 which would only allow the shaft to be at a small number of e~;tension len~tlis. It is pxtfarred that there be a substendal ~a T C number of teeth 145 to allow the extension of she shaft 11'4 to be va:-ied in small increments. The tooth l~S~also must be sufficiently large to have suffitczent ~tzength to, withstand the : epeat~d torque placed upon the teeth 14S it use.The adjustment knob 118 has a center hole and an enlarged recess 143 extendin& inwardly from the proximal end. Tl:e adjustment knob 118 f is over the proximal end of the adjustment rod I 3 8 and is retained thereat by the adjustment rod spring 14b snd spring retainer 148. The recess 143 ashen covered with a cap 1 SO to prevent the inu~usion ofdebris. The ;adjustment rod spring 14fi tray be a conventional coiled metallic spring, a metallic sprit:g of other shape. or merely a sleeve of compressible resilient material. The spring retainez 148 may be my suita~~le means for retaining the rod spring 14b in the desired location. The preferred spring retainer 148 is a "c" clip fitted into a circuiax recess sear the proximal end of the ~djustr:zent rod 138.In another embodiment c' the in4~ent:on 10., as 5hou~n in Figure 8, the handle 1~ has at:elongate transparent vrindav- 54 on the periphery of the handle and a graduated extension scale 58 visible through the transparent wir;dew 56. A pointer 6U may be formed or. one part of the extension mechanism 2G and a graduated scale 58 on 8h adjacent x~ot~liowof the handle I2. Alternately, the pointer may be formed on the handle 12 and the graduated ~cal~ 58 fo:med on the plug 3 .The use of the tool I 0 will be described, first, with respect to the screw driver embodiment as shown in Figure 1 with the preff.:wed embodiment of the locking mechanism as shown in Figure 3.The user first selects the tool IU from the place of storage. and if necessary, selects and inserts the proper replaceable tip 1 d. In the work area the user will adjust tYte length or extension of the shaft 114 try urging ~~he adjustment knob j l 8 tiway front the ~handl ~ 11.x. and rotating the a.djustmenf lrnob 118 u.~th respect to the handle 11 . Vfhen the drained length of the tool 10 a achie~~ed, the user 1t released the adjustment knob I I $ and allows tut adjustment knob to seat wt th the splined facts 144 engaged. The user may now fit the a-eplaceable tip 1 b into the t~ecess of~the selected fastener and turn :he fsstener. Should the selected length he incorrect. the user need only again disengage the teeth 145 of the splined fsces 44 and again rotate the auiustmet'tt knob 11s to obtain the correct length.Additiona:l~~, for storage, the shaft 114 may be fully retracted to save space.'When a tool having the first embo3iment of the locking mechanism. is used, to change ih~extension of the tool 10, t_he user roust first remcn~e tile protector cap 52 t~,~ access thc, locking itn.ot~d6, the locking knob 46 is loosened which allows the adjustment knob 1 ~ to be turned with respect to the handle 12 allowing the user to select the extcasio~ of the shaft 14 and therefore the length of the tool. When the chosen length is achieved; the user may then tighten the locking knob 46 to fig:the tool 1 C in its selected length for use.Cr'vth tl;e use off' a too 110 having the second. embeci;nent of the shaft 114, the length selecting process is as described above. 'The only difference is that the replaceable bit 716 selected is a crow root wrench 117. 'fhe use of the tool 11 U is also different in that the tool t 10 is moved laterally by the use- to rotate the fastener heki in the rep:aceable bit 1 I6 as contrasted with the tool 10 being rotated about its longitudin:~l axis in the p~-e~~iot.~s embodiments:Although die pres~r.t invention has been described with refeaence to preferred embodiments, v,.~ori;ers skilled intlte art wiil recognise changes may be made in form and detail without departing from the spirit and scope of the invention 1 rte.
    权利要求:
    Claims (23)
    [1] 1. A telescoping tool handle comprising:a. an adjustment mechanism, a locking mechanism, and a handle mechanism;b. the adjustment mechanism having an adjustment knob and an adjustment rod:c. the locking mechanism securing the adjustment mechanism to the handle mechanism:d. the handle mechanism having a handle, a drive mechanism, and a shank;e. the adjustment rod being secured to the adjustment knob;f. the adjustment rod being threaded into the drive mechanism within the handle;g. the drive mechanism attached the shank; and h. the shank extending out of the handle.
    [2] 2. The apparatus as described in Claim 1 wherein the locking mechanism further comprises a pair of friction washers retained between the handle and the adjustment knob and a means for urging the friction washers together.
    [3] 3. The apparatus as described in Claim 2 wherein the means for urging the friction washers together comprises a locking knob threadedly attached to the terminal end of the adjustment rod.
    [4] 4. The apparatus as described in Claim 1, wherein the locking mechanism further comprises a pair of engaging splined faces and a spring means for urging the splined faces into an engages position.
    [5] 5. The apparatus as described in Claim 4 where the splines have teeth and the teeth are approximately rectangular in shape.
    [6] 6. The apparatus as described in Claim 4 where the splines have teeth and the teeth are pointed in shape.
    [7] 7. The apparatus as described in Claim 4 where the splines have teeth and the teeth of the first splined face are approximately parabolic in shape and the teeth of the second splined face are a mating negative parabola in shape.
    [8] 8. The apparatus as described in Claim 1, wherein the handle mechanism further comprises at least one elongate internal channel formed in the handle and the drive mechanism further comprises at least one extending tab for engaging the at least one elongate internal channel in the handle.
    [9] 9. The apparatus as described in Claim 1 further comprising a transparently covered opening in the handle and a pointer formed on the adjustment mechanism and a graduated scale formed on the handle whereby, the pointer and graduated scale are viewable through the transparent opening showing the amount the tool handle is telescoped.
    [10] 10. The apparatus as described in Claim 1 further comprising a transparently covered opening in the handle and a pointer formed on the handle and a graduated scale formed on the adjustment mechanism whereby, the pointer and graduated scale are viewable through the transparent opening showing the amount the tool handle is telescoped.
    [11] 11. An elongate telescoping hollow shafted tool for operating fasteners, having a first and a second end comprising a. means for applying force to said first end; b. means for attaching a detachable tool to the second end of said telescoping shaft: c. an adjustment means for threadedly adjusting the length of the telescoping hollow shaft; d. a locking means for selectively retaining the hollow shaft at the selected length.
    [12] 12. The apparatus as described in Claim 11 wherein the means for applying force to the first end further comprises an elongate increased size portion forming a handle thereon.
    [13] 13. The apparatus as described in Claim 11 wherein the force applied is torque applied axially to the elongate telescoping hollow shaft.
    [14] 14. The apparatus as described in Claim 11 wherein the means for applying force to the first end further comprises a square female recess extending longitudinally inward from the first end of the elongate telescoping hollow shaft sized to receive a standard sized male adapter.
    [15] 15. The apparatus as described in Claim 11 wherein the locking mechanism further comprises a pair of friction washers retained between the handle and the adjustment knob and a means for urging the friction washers together.
    [16] 16. The apparatus as described in Claim 15 wherein the means for urging the friction washers together comprises a locking knob threadedly attached to the terminal end of the adjustment rod.
    [17] 17. The apparatus as described in Claim 15 wherein the means for urging the friction washers together comprises a locking knob threadedly attached to the terminal end of the adjustment rod.
    [18] 18. The apparatus as described in Claim 11 wherein the locking mechanism further comprises a pair of engaging splined faces and a spring means for urging the splined faces into an engages position.
    [19] 19. The apparatus as described in Claim 18 where the splines have teeth and the teeth are approximately rectangular in shape.
    [20] 20. The apparatus as described in Claim 18 where the splines have teeth and the teeth are pointed in shape.
    [21] 21. The apparatus as described in Claim 18 where the splines have teeth and the teeth of the first splined face are approximately parabolic in shape and the teeth of the second splined face are a mating negative parabola in shape.
    [22] 22. The apparatus as described in Claim 11 further comprising a transparently covered opening in the handle and a pointer formed on the adjustment mechanism and a graduated scale formed on the handle whereby, the pointer and graduated scale are viewable through the transparent opening showing the amount the tool handle is telescoped.
    [23] 23. The apparatus as described in Claim 11 further comprising a transparently covered opening in the handle and a pointer formed on the handle and a graduated scale formed on the adjustment mechanism whereby, the pointer and graduated scale are viewable through the transparent opening showing the amount the tool handle is telescoped.
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    US6626071B2|2003-09-30|Multi-functional hand tool assembly with storage handle and multiple tool attachments
    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2005-02-21| FZDE| Dead|
    优先权:
    申请号 | 申请日 | 专利标题
    US09/791,173|US6490761B2|2000-02-22|2001-02-21|Telescoping tool handle|
    US09/791,173||2001-02-21||
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