Resources Contact Us Home
Browse by Category: Main > Health & Medicine
Class Information
Number: 433/121
Name: Dentistry > Apparatus > Having motor or means to transmit motion from motor to tool (e.g., "engine") > Hand-held tool or handpiece > Having reciprocating, vibrating, or oscillating output > Impact by sudden release of spring
Description: Apparatus including a resilient member which alternately stores and releases energy from the prime mover or power transmission to drive the tool.

Patents under this class:

Patent Number Title Of Patent Date Issued
7874839 Powered surgical instruments Jan. 25, 2011
6050818 Electrically powered dental cleansing apparatus Apr. 18, 2000
5545038 Percussive dental extractor Aug. 13, 1996
5318445 Process and instrument for dental treatment Jun. 7, 1994
5158457 Dental process and instrument for polishing roots of teeth Oct. 27, 1992
4979899 Scaler for cleaning teeth Dec. 25, 1990
4689011 Dental percussion instrument Aug. 25, 1987
4482324 Percussion instrument Nov. 13, 1984
4341519 Dental angled vibration member Jul. 27, 1982
4316465 Ophthalmic handpiece with pneumatically operated cutter Feb. 23, 1982
4300885 Percussive dental crown extractor Nov. 17, 1981

  Recently Added Patents
Portion of a display panel with an unhappy facial expression icon
Optical recording medium, and method for producing optical recording medium
Automated processing machine used for processing samples placed on slides and having an output device
Wireless monitoring in process applications
Method, system and computer program product for verifying floating point divide operation results
Stackable clothes drying apparatus
Decoration holder
  Randomly Featured Patents
Intelligently enabled menu choices based on online presence state in address book
Scissor-type shear for loom
Image forming apparatus and method of adjusting head pressurizing force
Method and apparatus for controlling power levels of optical signals in optical fiber interconnects
Arrangement in air-cooled internal combustion engine
Acoustic wave device
Compliant non-jamming end of travel stop for a ball screw actuator
Snap-in self-centering mechanism button
Rotary wiping assembly for a nozzle plate in an ink jet printer