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Publication numberUS2382291 A
Publication typeGrant
Publication dateAug 14, 1945
Filing dateApr 8, 1943
Priority dateApr 8, 1943
Publication numberUS 2382291 A, US 2382291A, US-A-2382291, US2382291 A, US2382291A
InventorsCarlberg August E
Original AssigneeAllan Blomstrom F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Extensible hand tool
US 2382291 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

8 1945- v 2 A. E; CARLBERG V 2,382,291

EXTENSIBLE HAND TOOL Filed April 8, 1943 2 Sheets-Sheet 1 M/W. w

FIG.7 m Ho. AUGUNFYEETCEARLBEPG FIG 6 BY 2 ATTORNEY Patented Aug. 14, 1945 dle. The displac n handle grip 2.

between the shoulder l3 and the shank receiving end of the handle I insures that the angular faces 3a and to will always be engaged sufficiently to insure that the shank issolidlyheid"against turn ing with respect to'thehandlen I As best shown in Fig. 2, the open end of the bore 1 is closed by a plug l4, which may be drive-fitteda thread-tap 44. Adjustment of the shank 42 or threaded into the handle. The plug provides a spring-pressed friction ball I5, whichext'nds beyond the plug suflicientlyhsonthat a (portion thereof lies within the edges of aline'd transverse openings l6 extending through the wall of the receive the cross bar I! shown in dotted lines, with the. pressure of the ball l5 holding the-tern irictionallyin position., Ifhusthetool may be dfi the w mdi ias 1 t e t ol-1 a i i s was: n t ere hown a modification in" the ,meanjs, for holding the shank These Openings! @areadanted; 9.

s ide v l va i lene h, h n e driver 5 ,is turned on it's pivot pin. 6 so as to be a e y'adinet d'pbsitioni n this. arrangeinent,

the end of the handle portion l'iz provides an enlargement ,IBo'f tapered form, providingscrew threads IQ for receiving an mterneu threaded sleeve 20. one end of the sleeve ifl is tapered t 'eeriespend togthe'tap'ered' end surface o f the pOrt'i' nIjIBQ which'is slotted as indicated "at 21 in Fig. 7,'sothat'screwing on ofjthe sleeve 20 will tend to contract the portion which surrounds the rrietienjj ing lid, to such an extent as ti; very tightl'y compress the ring lla' upo n theshank, thereby holding the shankfirinly in any'adinste position. Otherwise the construction of thetool isthe sarne as described abbvewith refer nee'to i f m n r reviously pointed but,theinventi fl ggy alsol 'be applied in connection withl otherftyp i oi tools having the same generalpurpose as .the tool of Fig. 1, namely to move some relatively inaccessiblepart either bytiir i the tool itself,

or using the tool as a lever. I n Fig.8 the invention is shown as incorporated inan extension bar, wherein the end of the handle?! provides an angular socket 23 adapted, for example, to'receive the driver 5 at'the end of theftool of Fig 1 The handle" 22' isfalso flattened at 24 to receiveia wrench, if desired. The shank 25 terminates in a head 26 providing adriver 21 iormedintegrally with the shankfanda tapered sleeve 28fis adapted to lock the'shank 25 scribed abovewith reference to Fig. (3. In 9theinvention is shown as being applied toa Wrench of the brace t pe, wherein the handle 29pr'ovides a crankiportion 30, to the end of which is attached a tubular portion tensible shank 31 providing at its end an offset driver 38 adapted to be received in a Wrench socket of usual form. v

'1 In} Fig. 712 .;the handle portion :39 provides a transverseopening 40 fOr' receivinga bar 4| for using the tool as a T-handle, with a shank 42 provided at its end with a chuck 43 for receiving within the handle 39 permits the tap 44 to be used for. thethreading of holes in difierent loca- -tions;1

From -the"foregoing, it is apparent that by the present invention there is provided an extensible tooladaptedfor a wide variety of uses, with the toolbeing rotatable about its own axis to turn work at different, distances from the user, or being adapted to ,turn the work the applicationof diiierent leverages. A, nf 'e'chanic equipped with such jaf't'ool' is able to perform a large variety of operations that. heretofore would have required's iev eral handles, r. separate Wrenches.

I"claim,' I l 1'. extensible hand't'ool comprising in combination a hollow handlprov'iding 'a split portion' at' en end, a shank longitudinally movable within the'handle and providing'a work engaging"portionfat'oneiend beyond said handle, a contractile, member within the, split portion of said handle for exerting a Trictionalrestraining force on said shank and means for contracting the :splitpo'rtion of saidhandle ou the shank to also contract sai'd'menibe'r and"positively look I the shank against'turning within'the handle and tionally holding said shank in-diiierent extended positions with relation 'ft'o fsaid' handle, and an abutment p'ositionable'on the inner end of said shank,'after its'insertiohiiii said handle, to prevent complete wthdraw'al' of the shank from the handle uponengaging s'ai'd shoulder inside the in difierent positions as dc;

3| for receiving an extensible shank z'safeiz' n rf to theshank' 25ofFig'. 8, said 'shank2 5a pro viding a driver 21a. In -Fig. 10" the handle portion 3'2"is shown as lar to the' handle portion and: ceives anie'xhandle. I I

3. extensible, hand tool comprising in combination a hollow."hand1e open at one end and providing an internal groove located adjacent to said open end and an internal shoulder spaced froin'said' open end,- "alsha'nk providing a work engaging member at one 'end,with the other end of said shankslidably receive'dwithin said handle andextendingbeyondsaid-"shoulder, a contractile'rnemberfseated' in said handle groove and bearing'on the 'outside of saidshank for frictionally, holding said shank indifferent extended positions withrelation.to sad handle, and. an abutment positionable on the inner end of said shank, afterits, insertion in said handle, to prevent complete wthdrawal of the shank from the handle upon engaging said shoulder inside the handle, s'a'id}. ha ndle ,further providing internal flat surfaoes,]and with said shank providing external fiatsurfaces' in engagement vs ri th the hat surfaces of said hand1e, to ,prevent relative turning inovement betweenthej shank and handle many of said, shanks' extended positions.

v ...,AUQII$T.E-;CABLBERG'

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2512814 *Apr 5, 1948Jun 27, 1950Weiser CompanyDoor lock
US2571570 *Nov 14, 1949Oct 16, 1951Smith HagarMultiple socket wrench
US2580412 *Jul 13, 1946Jan 1, 1952Darmody William JNondeforming holding means for gauges
US2630131 *Mar 11, 1949Mar 3, 1953Thompson Prod IncValved drum cap and spigot assembly
US2632351 *Jun 15, 1948Mar 24, 1953Ross Dunlevy TNut-holding socket wrench
US2643687 *Nov 14, 1945Jun 30, 1953McanenyStrap fastening tool
US2647001 *Dec 28, 1946Jul 28, 1953Elis Andersson KarlFishing rod
US2892344 *Nov 14, 1952Jun 30, 1959Torsion Balance CompanyConvertible hardness testers
US3080184 *Mar 29, 1961Mar 5, 1963Amp IncLocking pin
US3227015 *Jun 14, 1965Jan 4, 1966Tremblay Thedore CExtending socket wrench
US3338607 *Dec 21, 1964Aug 29, 1967Westinghouse Air Brake CoExtensible handle
US3360285 *Mar 15, 1965Dec 26, 1967Allegheny Ludlum SteelConnectors
US3445952 *Jul 10, 1967May 27, 1969Ferman David HTelescopic fishing rod
US3530630 *Apr 12, 1968Sep 29, 1970Linde AgTank assembly for the transportation of low-temperature fluids
US3952987 *Oct 24, 1974Apr 27, 1976Bevco Precision Manufacturing CompanyChair adjustment construction
US4048872 *May 28, 1975Sep 20, 1977Gkn Transmissions LimitedControl couplings
US4503728 *Sep 29, 1982Mar 12, 1985Robert Bosch GmbhStop device
US4662771 *Apr 21, 1986May 5, 1987The Wooster Brush CompanyQuick release lock mechanism for telescoping members
US4703673 *Apr 8, 1985Nov 3, 1987Hallen CompanyCork-extracting apparatus
US5020397 *Oct 16, 1989Jun 4, 1991Minuto Paul GWrench
US5109737 *Jun 17, 1991May 5, 1992Raber Scott MExtended tool
US6038946 *May 19, 1997Mar 21, 2000Jackson; Roger LeeAxially repositionable adapter for use with a ratchet assembly
US6161350 *Nov 4, 1997Dec 19, 2000Espinosa; Thomas M.Fastener assembly serving as a product, or combined with other components as a product allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US6397420 *Jun 1, 1999Jun 4, 2002Paratech IncorporatedManual emergency tool assembly
US6494654Dec 18, 2000Dec 17, 2002Thomas M. EspinosaTie down building, system tie down, and method
US6688058 *Apr 19, 2002Feb 10, 2004Thomas M. EspinosaFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US6951078Jul 23, 2002Oct 4, 2005Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US7093521 *Jun 28, 2004Aug 22, 2006Chang Jauan LeeTelescopic structure for a tool
US7159366Mar 24, 2005Jan 9, 2007Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US7197965May 3, 2006Apr 3, 2007Anderson Steven PHinged socket wrench speed handle
US7340867Nov 13, 2006Mar 11, 2008Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
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US7798213 *Dec 14, 2006Sep 21, 2010Baker Hughes IncorporatedRadial spring latch apparatus and methods for making and using same
US8439122Sep 15, 2010May 14, 2013Baker Hughes IncorporatedRadial spring latch apparatus and methods for making and using same
US8534165Jan 5, 2007Sep 17, 2013Snap-On IncorporatedAdjustable tool extender
US9533409Aug 11, 2014Jan 3, 2017Nigel Alexander BuchananExtendable wrench handles
US9669537 *May 21, 2014Jun 6, 2017Chad HartmanAdjustable tool extender
US20050141953 *Dec 11, 2003Jun 30, 2005Chuan Lee C.Positioning structure for a telescopic device
US20050160690 *Mar 24, 2005Jul 28, 2005Espinosa Thomas M.Fastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US20050284266 *Jun 28, 2004Dec 29, 2005Lee Chang JTelescopic structure for a tool
US20070130857 *Nov 17, 2006Jun 14, 2007Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US20070130870 *Nov 13, 2006Jun 14, 2007Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US20070175135 *Nov 8, 2006Aug 2, 2007Espinosa Thomas MFastener assembly serving as a product, or combined with other components as a product, allows automatic controlled movements in one direction and prevents movements in the opposite direction when forces are applied
US20080142228 *Dec 14, 2006Jun 19, 2008Harvey Peter RRadial spring latch apparatus and methods for making and using same
US20080163726 *Jan 5, 2007Jul 10, 2008Wente Steve RAdjustable tool extender
US20090293682 *May 28, 2008Dec 3, 2009Chih-Ching HsiehHand tool with an elbow structure
US20100107828 *Nov 3, 2008May 6, 2010Juan HuertaAdjustable Handle System for Fastening Tools That Drive Threaded Fasteners
US20110000681 *Sep 15, 2010Jan 6, 2011Baker Hughes IncorporatedRadial Spring Latch Apparatus and Methods for Making and Using Same
US20130068072 *May 23, 2012Mar 21, 2013Yi Chen LiDrive tool device having drive handle
US20130160617 *Feb 21, 2013Jun 27, 2013Kabo Tool CompanyHand tool with an elbow structure
US20130228051 *Mar 1, 2013Sep 5, 2013Chin-Tan HuangTelescopic hand tool
US20150336259 *May 21, 2014Nov 26, 2015Chad HartmanAdjustable tool extender
US20170312906 *Apr 28, 2016Nov 2, 2017Ting-Kai CHANGLength adjustment structure for wrench extension
WO2001009522A1 *Aug 3, 2000Feb 8, 2001Concepts 2000 Pty LtdLength adjustment mechanism
Classifications
U.S. Classification403/107, 403/112, 16/429, 81/177.2
International ClassificationB25G1/00, B25G1/04
Cooperative ClassificationB25G1/043
European ClassificationB25G1/04S