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Class Information
Number: 433/128
Name: Dentistry > Apparatus > Having motor or means to transmit motion from motor to tool (e.g., "engine") > Hand-held tool or handpiece > Having means facilitating assembly or disassembly of tool or handpiece > Means to releaseably grip tool > Comprising locking means extending into groove or recess
Description: Apparatus wherein the chuck includes a movable member adapted to engage an indentation formed in the work contacting and modifying means to retain the work contacting and modifying means in the chuck.

Patents under this class:

Patent Number Title Of Patent Date Issued
8075311 Removably fixing a dental instrument with a retractable catch relative to a drive shaft axis Dec. 13, 2011
7747418 Computer aided dental bar design Jun. 29, 2010
7677890 Dental handpiece Mar. 16, 2010
7645138 Device for locking a dental instrument on a handpiece consisting of a rotating spindle, locking spring and push-button assembly Jan. 12, 2010
7214060 Handpiece for dental or surgical use May. 8, 2007
6305935 Disposable contra-angle Oct. 23, 2001
6270087 Tool shaft coupler Aug. 7, 2001
6227854 Releasable chucking device for a rotating medical or dental tool May. 8, 2001
6089866 Drive shaft retention means for prophy angle Jul. 18, 2000
6065966 Medical or dental treatment instrument for the treatment of body tissue or a substitute material, in particular by cutting, and tool for such a treatment instrument May. 23, 2000
6062575 Tool shaft coupler May. 16, 2000
5704786 Chuck with a push button release for a dental/medical device Jan. 6, 1998
5584689 Angled or straight handpiece with a releasable mounting device for a tool, in particular for medical purposes Dec. 17, 1996
5518398 Dental handpiece having rotatable contact member May. 21, 1996
5490683 Tool shaft coupler Feb. 13, 1996
RE35147 Dental tool holder Jan. 23, 1996
5219174 Drill chuck for a drill to be used particularly for surgical purposes Jun. 15, 1993
5090906 Push-button control device for a dental instrument Feb. 25, 1992
5090905 Endodontic filing tool Feb. 25, 1992
5037299 Chucking device for dental handpiece Aug. 6, 1991
5028181 Quick change right angle and offset drill head Jul. 2, 1991
5020994 Dental prophylaxis angle Jun. 4, 1991
5011408 Chuck device for dental handpiece Apr. 30, 1991
4954082 Reciprocating dental tool Sep. 4, 1990
4940410 Dental tool holder Jul. 10, 1990
4820154 Dental instrument with a tool for treating the teeth Apr. 11, 1989
4802852 Irrigated drill and quick-release chuck assembly Feb. 7, 1989
4802848 Parapulper restorative pin and driver assembly Feb. 7, 1989
4781589 Clamping arrangement, especially for dental instruments Nov. 1, 1988
4728292 Dental apparatus Mar. 1, 1988
4661062 Dental handpiece contra-angle head Apr. 28, 1987
4484891 Vibratory endodontic device Nov. 27, 1984
4398886 Rotatable socket for a dental handpiece Aug. 16, 1983
4378212 Rotary driving apparatus having a collet with a magnetic latching mechanism Mar. 29, 1983
4371342 Dental anchoring means Feb. 1, 1983
4370132 Rotatable socket for a dental handpiece Jan. 25, 1983
4268252 Contra-angle head for dentistry May. 19, 1981
4255145 Dental tool having severable sections Mar. 10, 1981
4205444 Dental tool shank Jun. 3, 1980
4197645 Drill head and bone drill Apr. 15, 1980
RE29736 High speed bone drill Aug. 22, 1978
4055185 Rotary drill for surgeons Oct. 25, 1977
4014099 Dental handpiece Mar. 29, 1977
4007528 High speed bone drill Feb. 15, 1977
3987549 Dental prophylactic handpiece Oct. 26, 1976
3967380 Clamping mechanism for reciprocating dental tool Jul. 6, 1976

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