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Class Information
Number: 433/131
Name: Dentistry > Apparatus > Having motor or means to transmit motion from motor to tool (e.g., "engine") > Hand-held tool or handpiece > Having motor
Description: Apparatus wherein the hand-held tool or handpiece is provided with a prime mover to drive the work contacting and modifying means.










Sub-classes under this class:

Class Number Class Name Patents
433/132 Rotary fluid turbine 128


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8641417 Sealing system for medical/dental handpieces Feb. 4, 2014
8487488 Electric motor for use in a sterilizable dental handpiece Jul. 16, 2013
8333588 Medical or dental hand-piece element Dec. 18, 2012
8133053 Electric motor for use in a dental, dental-medical or dental-technical handpiece and stator therefor Mar. 13, 2012
7997899 Dental, dental-medical or dental-technical handpiece with electric motor Aug. 16, 2011
6964076 Electric toothbrush Nov. 15, 2005
6902337 Dentifrice dispensing electrical toothbrush Jun. 7, 2005
6721986 Electric toothbrush Apr. 20, 2004
6616446 Working device for drilling, cutting and screwdriver instruments used for medical purposes Sep. 9, 2003
6582405 Electrically-driven dental injector Jun. 24, 2003
6446294 Electric toothbrush Sep. 10, 2002
6425761 Drive system for dental handpiece Jul. 30, 2002
6132213 Dental tool holder Oct. 17, 2000
6126442 Motorised handpiece Oct. 3, 2000
6042377 Dental handpiece with detachable motor Mar. 28, 2000
5980248 Motor controller for a dental handpiece Nov. 9, 1999
5944523 Dental assembly having multi-movement motor Aug. 31, 1999
5924864 Handpiece for medical purposes, in particular for a medical or dental treatment device, preferably for a cutting treatment of a dental root canal Jul. 20, 1999
5689159 Surgical tool system with brushless, sensorless motor Nov. 18, 1997
5639236 Root canal dental handpiece Jun. 17, 1997
5538423 Apparatus for controlling operational parameters of a surgical drill Jul. 23, 1996
5538423 Apparatus for controlling operational parameters of a surgical drill Jul. 23, 1996
5504961 Electric toothbrush with drive release Apr. 9, 1996
5311633 Electric power driven toothbrush May. 17, 1994
5054149 Electric toothbrush Oct. 8, 1991
5040977 Self powered dental plaque-removing device Aug. 20, 1991
4989287 Electric toothbrushes Feb. 5, 1991
4827550 Removable head mechanism for automatic cleaning device May. 9, 1989
4681540 Dental handpiece arrangement Jul. 21, 1987
4661060 Dental handpiece Apr. 28, 1987
4619614 Rotational coupling device for a dental handpiece having a built-in battery Oct. 28, 1986
4568283 Medical handpiece Feb. 4, 1986
4564781 Electrical bell type motor Jan. 14, 1986
4507085 Dental instrument with handpiece Mar. 26, 1985
4504227 Dental handpiece set Mar. 12, 1985
4493643 Dental handpiece having non-contact rotational speed detection device Jan. 15, 1985
4355977 Cordless handpiece for dental treatment Oct. 26, 1982
4279596 Dental handpiece Jul. 21, 1981
4235595 Handpiece with continuous shaft and bell rotor Nov. 25, 1980
RE30356 Hand drilling Aug. 5, 1980
4183140 Dental stain remover Jan. 15, 1980
4179814 Tooth cleaning device Dec. 25, 1979
4123845 Self contained power actuated dental appliance Nov. 7, 1978
4079517 Home prophylaxis unit Mar. 21, 1978
4071029 Angle handpiece Jan. 31, 1978
4060870 Toothpaste administering automatic toothbrush Dec. 6, 1977
4033039 Dental handpiece Jul. 5, 1977
4007529 Motor-driven dental handpiece Feb. 15, 1977
3987549 Dental prophylactic handpiece Oct. 26, 1976
3978586 Dental apparatus Sep. 7, 1976

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