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Class Information
Number: 451/295
Name: Abrading > Machine > Rotary tool > Means to rotate tool > Hydraulic driver
Description: Abrading machine wherein control of the rotary drive motion is by way of fluid pressure.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8651922 Inline handheld power tool Feb. 18, 2014
8277292 Inline handheld power tool Oct. 2, 2012
8216028 Installation/uninstallation structure for tooling disk of a grinding tool Jul. 10, 2012
7300337 Grinding machine with a dust collector Nov. 27, 2007
7288022 Water-driven tool Oct. 30, 2007
7252580 Grinder with easily installable/detachable grinding disc Aug. 7, 2007
7226348 Air sander grinder Jun. 5, 2007
7115028 Coupling structure for grinding members Oct. 3, 2006
7077732 High torque dual chamber turbine rotor for hand held or spindle mounted pneumatic tool Jul. 18, 2006
7014548 Pneumatic grinder with easily replacing grinding disc Mar. 21, 2006
6783437 Edge-sealed pad for CMP process Aug. 31, 2004
6752704 Grinder with easily installable/detachable grinding disc Jun. 22, 2004
6752705 Pneumatic tool with safety effect Jun. 22, 2004
6709315 Auto feed system for compressed propellant tools and pressure compensating valve therefore Mar. 23, 2004
6464572 Portable power tool with an anti-vibration balancing device Oct. 15, 2002
6409584 Speed adjusting device for pneumatic grinding tool Jun. 25, 2002
6312315 Abrasive article with separately formed front surface protrusions containing a grinding aid and methods of making and using Nov. 6, 2001
6264408 Pneumatic tool kit Jul. 24, 2001
6264534 Method and tooling for automated wet or dry sanding of a vehicle surface Jul. 24, 2001
6203415 Direct drive water-driven rotary tool Mar. 20, 2001
6186866 Abrasive article with separately formed front surface protrusions containing a grinding aid and methods of making and using Feb. 13, 2001
6056629 Free form machining tool May. 2, 2000
6007412 Rotary abrading or polishing tool Dec. 28, 1999
5775981 Air die grinder Jul. 7, 1998
5662517 Compressed-air-driven metal working machine Sep. 2, 1997
5626065 Cutting device with automatic sharpener May. 6, 1997
5620364 Water-driven rotary tool Apr. 15, 1997
5597348 Water feed for sanding tool Jan. 28, 1997
5591070 Air tool with exhaust diverting valve Jan. 7, 1997
5525097 Air motor Jun. 11, 1996
5303513 Portable abrading handtool Apr. 19, 1994
5301471 Portable air angle head random orbital unit Apr. 12, 1994
5299392 Portable power grinder Apr. 5, 1994
5255474 Polishing spindle Oct. 26, 1993
4683682 Safety lever for portable power tool Aug. 4, 1987
4558539 Pneumatic rotary grinding tool Dec. 17, 1985
4491297 Three way coupling Jan. 1, 1985
4485595 Grinding and polishing apparatus Dec. 4, 1984
4468897 Universal pneumatic grinding bar Sep. 4, 1984
4463525 Hand-held cleaning tool with remote water turbine power source Aug. 7, 1984
4444272 Overspeed safety device Apr. 24, 1984
D267224 Pneumatic support frame for a rotary sander Dec. 14, 1982
4302910 Pneumatically operated grinding apparatus Dec. 1, 1981
4242840 Workpiece drive wheel for a grinding machine Jan. 6, 1981
4232414 Free-wheeling overspeed grinder device Nov. 11, 1980
4216630 Grinder apparatus with pollution control fluid dispensing means Aug. 12, 1980
4193228 Water driven tool Mar. 18, 1980
4175359 Fluid powered orbital wet sander and the like Nov. 27, 1979
4141671 Tool gas turbine motor Feb. 27, 1979
4129966 Grinder apparatus with pollution control fluid dispensing means Dec. 19, 1978

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