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Class Information
Number: 433/127
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
Description: Apparatus including a chuck for releasably holding a work contacting and modifying means.










Sub-classes under this class:

Class Number Class Name Patents
433/128 Comprising locking means extending into groove or recess 46
433/129 Including axially movable collect to cam fingers 58


Patents under this class:
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Patent Number Title Of Patent Date Issued
8104774 Hand-held instrument for dental or surgical use Jan. 31, 2012
8021152 Dental handpiece Sep. 20, 2011
7677890 Dental handpiece Mar. 16, 2010
7416411 Medical handpiece having a clamping sleeve for a tool Aug. 26, 2008
7367804 Endodontic instrument extractor tool manufactured from a shape memory material and related kits and methods May. 6, 2008
7303394 Hand-held piece for dental or surgical use including a resilient clamp Dec. 4, 2007
7258547 Press-type bit-holding mechanism of a dental high-speed handset Aug. 21, 2007
7214060 Handpiece for dental or surgical use May. 8, 2007
7137633 Wrench-free manual chuck turbine Nov. 21, 2006
7074041 Medical or dental-medical handpiece having a push button for the release of a tool Jul. 11, 2006
6951462 Dental tool with rententive feature Oct. 4, 2005
6817862 Ultrasonic dental tool having quick change connector and method of making same Nov. 16, 2004
6575747 Endodontic instruments adapted to provide variable working lengths and related methods for using the instruments Jun. 10, 2003
6533578 Dental apparatus Mar. 18, 2003
6312255 Endodontic adapter for a sonic scaler Nov. 6, 2001
6305935 Disposable contra-angle Oct. 23, 2001
6293792 Dental syringe tip Sep. 25, 2001
6273718 Dental handpiece Aug. 14, 2001
6227854 Releasable chucking device for a rotating medical or dental tool May. 8, 2001
6220859 Dental saliva ejector tube assembly Apr. 24, 2001
6190168 Dental handpiece having improved bur release means Feb. 20, 2001
6183252 Dental syringe for dentists Feb. 6, 2001
6126442 Motorised handpiece Oct. 3, 2000
6012922 Axial displacement bearing connecting a multi-section shaft for quick removal of dental tools from a handpiece Jan. 11, 2000
6000940 Surgical bur shank and locking collet mechanism Dec. 14, 1999
5931671 Dental saliva ejector tube assembly Aug. 3, 1999
5924865 Chuck with a push button release for a dental/medical device Jul. 20, 1999
5915965 Dental device and the working tool to be exchanged Jun. 29, 1999
5911578 Head assembly for a medical handpiece Jun. 15, 1999
5906488 Releasable holding device preventing undesirable rotation during tightening of a screw connection in a bone anchored implant May. 25, 1999
5836766 Medical or dental handpiece Nov. 17, 1998
5833246 Centrifugal chuck for surgical handpiece Nov. 10, 1998
5730596 Dental instrument holder Mar. 24, 1998
5718582 Dental tool chuck Feb. 17, 1998
5688122 Chucking device for a dental tool Nov. 18, 1997
5584689 Angled or straight handpiece with a releasable mounting device for a tool, in particular for medical purposes Dec. 17, 1996
5575648 Dental turbine spindle assembly Nov. 19, 1996
5571013 Integral bur tube and bearing assembly Nov. 5, 1996
5542846 Dental tool chuck Aug. 6, 1996
5518398 Dental handpiece having rotatable contact member May. 21, 1996
RE35147 Dental tool holder Jan. 23, 1996
RE34997 Dental appliance Jul. 18, 1995
5308242 Disposable handpiece for dental procedures May. 3, 1994
5224859 Dental appliance Jul. 6, 1993
5165896 Clamping mechanism for a dental tool Nov. 24, 1992
5090906 Push-button control device for a dental instrument Feb. 25, 1992
5074789 Chucking device for dental handpiece Dec. 24, 1991
5040980 Dental handpiece with spring grip chuck and lever release mechanism Aug. 20, 1991
5022857 Dental burr and dental handpiece Jun. 11, 1991
5011408 Chuck device for dental handpiece Apr. 30, 1991

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