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Class Information
Number: 433/114
Name: Dentistry > Apparatus > Having motor or means to transmit motion from motor to tool (e.g., "engine") > Hand-held tool or handpiece
Description: Apparatus comprising either (a) a hand-held device having a driven work contacting and modifying means, or (b) a hand-held chuck for removably holding a driven work contacting and modifying means.

Sub-classes under this class:

Class Number Class Name Patents
433/133 Contra angled handpiece 63
433/125 Having abrading or polishing means 147
433/130 Having adjustable head 21
433/116 Having cover or guard 118
433/126 Having means facilitating assembly or disassembly of tool or handpiece 243
433/131 Having motor 52
433/118 Having reciprocating, vibrating, or oscillating output 130
433/115 Having seal 43
433/117 Including shock absorbing or vibration dampening means 7

Patents under this class:
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Patent Number Title Of Patent Date Issued
8597388 System for making a dental restoration providing ventilation of a control unit of the system, and a corresponding method Dec. 3, 2013
8597022 Prophy angle and adapter Dec. 3, 2013
8333588 Medical or dental hand-piece element Dec. 18, 2012
8137102 Fluid-operated medical or dental handheld element Mar. 20, 2012
8118594 Dental handpiece with a unitary body and an electrically conductive and elastic connection element Feb. 21, 2012
8109762 Dental handpiece with abutment device Feb. 7, 2012
7686614 Dental handpiece drive train with non-intersecting axes Mar. 30, 2010
7575432 Torque transmission for a surgical or dental rotating tool Aug. 18, 2009
7556498 Medical contra-angle handpiece Jul. 7, 2009
7488173 Instrument with pressure sensing capabilities Feb. 10, 2009
7448870 Handpiece for dental or surgical use with locking mechanism Nov. 11, 2008
7416410 Medical or dental handpiece with a rear and a front shaft section that form an obtuse angle Aug. 26, 2008
7214060 Handpiece for dental or surgical use May. 8, 2007
7179087 Medical or dental-medical handpiece having a rearward and a forward handpiece section Feb. 20, 2007
7156659 Contra-angle handpiece for rotary surgical instruments, in particular in dental surgery Jan. 2, 2007
7100476 Torque wrench for dental implants Sep. 5, 2006
6939535 Method and apparatus for preventing tooth decay Sep. 6, 2005
6908607 Dental bleaching gel composition and activator Jun. 21, 2005
6899538 Identification type instrument assembly, identification type adapter, identification type tube, and medical apparatus using them May. 31, 2005
6814157 Rotary tool flex shaft with lock pin and end cap Nov. 9, 2004
6793490 Dental handpiece for the polymerization of photosetting compounds or resins, compatible with the power supply of other handpieces Sep. 21, 2004
6638068 Medical handpiece having a rod-shaped grip part Oct. 28, 2003
6607385 Method and device for limiting the torque of dental and surgical handpieces Aug. 19, 2003
6607384 Lighting device for dental or medical instrument, and dental or medical instrument having lighting device Aug. 19, 2003
6582405 Electrically-driven dental injector Jun. 24, 2003
6379149 Dental treatment area Apr. 30, 2002
6358252 Apparatus for extracting bone marrow Mar. 19, 2002
6171108 Endodontic file handpiece Jan. 9, 2001
6128966 Inspection method for endodontic files, and equipment for same Oct. 10, 2000
5947485 Collet assembly and manufacturing process Sep. 7, 1999
5944523 Dental assembly having multi-movement motor Aug. 31, 1999
5941705 Manual drive endodontic handpiece Aug. 24, 1999
5941704 Crown cage for ball bearing and dental hand piece including the same Aug. 24, 1999
5913859 Apparatus for extracting bone marrow Jun. 22, 1999
5683248 Autoclaving cap for dental handpieces Nov. 4, 1997
5674068 Medical or dental handpiece Oct. 7, 1997
5639236 Root canal dental handpiece Jun. 17, 1997
5586886 Rotary handpiece for endodontic instruments Dec. 24, 1996
5575647 General purpose dental handpiece Nov. 19, 1996
5464350 Dental handpiece with a check valve Nov. 7, 1995
5380201 Dental handpiece having cleaning unit Jan. 10, 1995
5348473 Medical tool Sep. 20, 1994
5308242 Disposable handpiece for dental procedures May. 3, 1994
5282745 Dental handpiece purging device Feb. 1, 1994
5281139 Dental equipment cleaning device Jan. 25, 1994
5178536 Dentistry set having a head inclined with respect to drill axis and using visual control Jan. 12, 1993
5165503 Method and apparatus for lubricating and disinfecting dental drills Nov. 24, 1992
5163842 Process and apparatus for producing dental filling for restoration of tooth crown Nov. 17, 1992
5139422 Sleeve for a medical instrument, particularly a dental handpiece, and the method of manufacture Aug. 18, 1992
5122153 Tissue removing instrument and method Jun. 16, 1992

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