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Class Information
Number: 433/105
Name: Dentistry > Apparatus > Having motor or means to transmit motion from motor to tool (e.g., "engine") > Including clutch or variable transmission
Description: Apparatus including either (a) a selectively engageable drive between the prime mover and tool, or (b) means to vary the ratio of the speed of movement of the prime mover"s working member to the speed of movement of the tool.










Patents under this class:

Patent Number Title Of Patent Date Issued
8172572 Dental tool displacement apparatus with slow rotational motion May. 8, 2012
7632094 Method and equipment for producing glucose from a starch solution Dec. 15, 2009
7448869 Medical or dental tool holder comprising a multi-step transmission arrangement Nov. 11, 2008
7416410 Medical or dental handpiece with a rear and a front shaft section that form an obtuse angle Aug. 26, 2008
6629842 Dental handpiece Oct. 7, 2003
5975900 Rotatable medical and/or dental instrument having a variable speed transmission Nov. 2, 1999
5569034 Dental handpiece providing low speed, high torque rotary output using plural stage planetary gear reduction Oct. 29, 1996
5529494 Dental tool driving device Jun. 25, 1996
5281138 Dental handpiece having coaxial ring gears rotatable at different respective angular speeds Jan. 25, 1994
4834652 Dental handpiece May. 30, 1989
4693685 Gear ratio step-down or step-up device for dental handpiece Sep. 15, 1987
4643675 Dental handpiece Feb. 17, 1987
4490114 Ultrasonically driven low-speed rotary motor Dec. 25, 1984
4475889 Speed-increasing device for a dental handpiece Oct. 9, 1984
4433957 Transmission gear for a dental handpiece Feb. 28, 1984
4306865 Dental handpiece reduction gear Dec. 22, 1981
4278428 Dental handpiece Jul. 14, 1981
4278429 Dental handpiece Jul. 14, 1981
4276025 Dental handpiece Jun. 30, 1981
4245985 Dental handpiece Jan. 20, 1981
4222738 Dental handpiece and drive arrangement therefor Sep. 16, 1980
4071029 Angle handpiece Jan. 31, 1978
4040311 Dental handpiece Aug. 9, 1977
3942392 Dental handpiece Mar. 9, 1976











 
 
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