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Publication numberUS1688136 A
Publication typeGrant
Publication dateOct 16, 1928
Filing dateOct 10, 1925
Priority dateOct 10, 1925
Publication numberUS 1688136 A, US 1688136A, US-A-1688136, US1688136 A, US1688136A
InventorsChayes Herman E S, Jurgensen August P
Original AssigneeChayes Dental Instr Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental tool holder
US 1688136 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

H. E. S. CHAYES ET AL DENTAL TOOL HOLDER Filed Oct. l0, 1925 illl 'qmui" ATTORNEY Patented Get. 16, 19,28.

Unir-.ED STATE 1,688,136y S PATENT orrifct.




' 4Applicatin filed O ctcber 10, 11325,. Serial no. 61,644.

arovide an improved form of `tool holder hav-v ing a simple and eliective means forzlooking or releasing the shaft of the tooland having `means whereby the tool holding part may be secured in different ,angular positions with respect to the handle imember .of vthe holder.` i

'lillek invention consists in a dental tool holder in which the shaft .of the tool is held in place by means of a aw member normally engaging a groove in the tool sha-ft and connected with means manually operable to move `the jaw member'out of engagement -with saidgrooue to permit removal `of the tool.

The invention Aalso consists in a dental tool holder ,which comprises a tool holding part in which the tool is rotatably mounted, and a handle member, said part and member iaving cooperating joint members permitting connection of said part with said member in a plurality of dilferent angular relations.

@ther subsidiary features of the invention will be clearly set forth in the appended claims.

In the drawings, in which a preferred embodiment of the invention has been selected for illustration Fig. 1 is a View in side elevation of a dental tool holder' constructed in accordance with the invention.

F ig. 2 is a view inlongitudinal section. ofl

the tool holder shown in Fig. 1.

Fig. 3 is a plan view of aportion of the tool holder shown in Fig. l.

Fig. a is a similar plan view of the tool holder with t-he cover plate removed.

F 5 is an end view of the tool'holding part of the tool holder. i

Fig. 6 is a view in vertical section of a tool holding chuck forming part of the invention.

Referring to the drawings for a more detailed description of the invention, at 1() is shown a hollow handle or attaching member which is adapted to be fitted-to the tapering forward end of a dental drill head or handpiece 10a to forman extension thereof. The

. handle member 10 has a knurled hand-grasping portion 11 and, at its forward end, terminates ina joint member 12 inclined atan angle to the axis of the handle member. A pair-of diametrically opposite lugs ,13 on ,the

inclined face of thejoint member 12 are adapted to enter diametrically opposite slots 14 of a plurality of pairs of such slots formed, yas shown in Fig. 6, in the end face of a joint member 15 forming the terminal portion of the tool holding part 16 of the tool holder. This arrangement shown, having two pairs of slotsA lei, provides for the positioningof the drill holdingpart 16 in one of four different angular positions with re- Y., A- COR- lation tothe axis of the handle member, the

joint members being held in interlocked relation bymeans of the threaded sleeve 17..

The drill holding` pai-t1@ of the holder forms a bearing member in which a driving shaft 18 is journaled, the shaft ,terminating at its forward end Yin a wbevel pinion 19 meshing with a geared flange 2O on a tool lholding chuck or socket 21. The chuck 21 is journaled for rotation about an axis at riO'ht angles to the axis of the shaft 1S and has a bearing support at 22 in the chuck holding head 38 for its upper end, the lower end being supported by the bearing 1ne1nber23 which has a threaded engagement with an end of the bore 24; in which the chuck 21 is arranged. An oil hole 89 is provided for supplying lubricant to shaft 18 and other bearing parts.

The shaft orarbor 25 of the tool is placed l driven through a universal joint connection at 28 with a shaft 29 extending through the handle member 10 and adapted to be engaged or gripped by the chuck of the drill head or handpiece 10a on which the vhandle 10Y is adapted to be mounted. Y

In order to lock the tool shaft 25 in operative position within lthe driving chuck 217 a latching device 30 is employed which includes a pair of jaw members 31 arranged to engage within the opposite sides of a groove 32 formed in the tool shaft 25 adjacent the upper end thereof. The jaw members 31 are integrally connected withv the base 34, which is bent upwardly at the end thereof opposite the jaw members and then again bent horizontally parallel with itself as clearly shown in Fig. 2. The latching ,device so formed is slidable upon-an upper surface 33 of the part 38, within a chamber formed above this surface and normally closed by acover plate35.

The coverplate 35 has a knurled or roughened upper surface, as shown in Fig. '3, and

is attached to the latching device by meansy of the screw 36, so 'that by' pressing the cover plate rearwardly the jaws of the latch ing device may be removedfrom engagement with the tool shaft 25 and the latter maybe removed. VVhen'a, tool shaft has been inserted-in place in the chuck and the pressure on the cover plate is released, va

spring 37 returns the cover plate to closed position and also returns the latching device into position t0 hold the ltool shaft'inl place in the chuck. The cover plate is slidably mounted by having dovetailed engagement at its edges with the walls of the part 38 enclosing the chamber in which the latching device is arranged. The interior surface of the'handle memzber l0 is of tapered form to it over the forwardly converging end of a dental handpiece 10a, as shown in dotted `f as `duralumin,while the main bearing portion 16 is Vformed of stainless steel, bronze or the like.` The various joints are closely fitted and in the drill holding relation' of parts no openings are available in whichl the moisture can enter when the device is in use.

Vhat is claimed Aisz-'- f l.l In al dental angle piece, a drill-carrying memberl a chuck mountedfin Said member for receiving a drill, a recessy in said member,

a latching member slidable in said recess for` retaining the drill, said latching member having an upwardly and forwardly extending arm and a sliding cover secured to the forwardly extending arm of said latching member and Vnormally closing saidreoess.

V2. A device as set forthv in claim l-in which a spring is mounted in said recess for maintaining said cover in closed position.

In testimony whereof we aflix our signatures.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2471526 *Aug 21, 1946May 31, 1949Jensen Hans E TDental hand piece
US2524058 *Jul 18, 1947Oct 3, 1950Bokri Kamara SoriElectromechanical hair curler
US3117386 *Mar 7, 1961Jan 14, 1964Ray FerwerdaTooth arrangement for earth digging apparatus
US3521358 *Oct 20, 1967Jul 21, 1970Berman HerbertDental drill assembly
US3727312 *Mar 15, 1971Apr 17, 1973Durante JDental hand instrument
US4234308 *Apr 20, 1978Nov 18, 1980Micro-Mega S.A.Device for locking a tool in a dental handpiece
US5040978 *Dec 22, 1989Aug 20, 1991Dentsply Research & Development Corp.Dental prophy angle
US5433605 *Sep 20, 1993Jul 18, 1995Strobl, Jr.; Frederick P.Adjustable, disposable dental prophy tool
US6155827 *Feb 24, 1998Dec 5, 2000Micro Mega International Manufactures, S.A.Sleeve for a dental instrument
US7029274 *Oct 20, 2003Apr 18, 2006Capps R ScottRotary float
US7101176Oct 5, 2005Sep 5, 2006Capps R ScottRotary float with friction-engaged cap
US7207798May 28, 2004Apr 24, 2007Micro-Mega International ManufacturesMechanized dental instrument
US7618220 *Mar 15, 2006Nov 17, 2009Mariam Jaber Suliman Al-HussainRotary tool
US7771198 *Oct 20, 2003Aug 10, 2010Micro Mega International ManufacturesDental power instruments, such as endodontic instruments, and contra-angle handpiece
US8123523 *Sep 27, 2007Feb 28, 2012Angstrom Manufacturing, Inc.Prophy angle and adapter
US8360774Aug 22, 2008Jan 29, 2013Angstrom Manufacturing, Inc.Prophy angle
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US8597022 *Feb 1, 2012Dec 3, 2013Angstrom Manufacturing, Inc.Prophy angle and adapter
US8834159Feb 25, 2010Sep 16, 2014Angstrom Manufacturing, Inc.Adjustable angle prophy angle adapter
US9144471 *Feb 25, 2010Sep 29, 2015Angstrom Manufacturing, Inc.Prophy angle and adapter with guard
US20060121414 *Oct 20, 2003Jun 8, 2006Hubert EuvrardDental power instruments, such as endodontic instruments, and contra-angle handpiece
US20060172256 *May 28, 2004Aug 3, 2006Hubert EuvrardMechanised dental instrument
US20070237590 *Mar 15, 2006Oct 11, 2007Al-Hussain Mariam J SRotary tool
US20080064007 *Sep 27, 2007Mar 13, 2008Carron Chris JProphy angle and adapter
US20090269717 *Oct 29, 2009Papanek ThomasAngles hose connection for dental handpiece
US20100015568 *Jul 15, 2009Jan 21, 2010Angstrom Manufacturing, Inc.Adjustable angle prophy angle adapter
US20100196845 *Feb 25, 2010Aug 5, 2010Carron Chris JProphy angle and adapter with guard
US20100196846 *Feb 25, 2010Aug 5, 2010Carron Chris JAdjustable angle prophy angle adapter
US20100196847 *Aug 5, 2010Carron Chris JProphy angle and adapter with latch
US20120156643 *Feb 1, 2012Jun 21, 2012Angstrom Manufacturing, Inc.Prophy angle and adapter
CN1738577BOct 20, 2003Sep 15, 2010米克罗.梅加国际制造公司Improvement to dental power instruments, such as endodontic instruments, and contra-angle handpiece
WO2004071325A1 *Oct 20, 2003Aug 26, 2004Micro Mega Int Mfg SaImprovement to dental power instruments, such as endodontic instruments, and contra-angle handpiece
U.S. Classification279/76, 433/128, 433/130, 433/126
International ClassificationA61C1/14, A61C1/08
Cooperative ClassificationA61C1/141
European ClassificationA61C1/14A