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Class Information
Number: 451/381
Name: Abrading > Work holder > Clamp > Hollow work
Description: Clamping work holder especially adapted for holding a hollow workpiece.

Sub-classes under this class:

Class Number Class Name Patents
451/382 Hypodermic needle 15

Patents under this class:

Patent Number Title Of Patent Date Issued
8241093 Precision guiding device in a machine for machining cylindrical components Aug. 14, 2012
7913374 Processing method for brake rotor-equipped wheel bearing devices Mar. 29, 2011
6638137 Removing investment casting gates Oct. 28, 2003
6553880 Micromachining system Apr. 29, 2003
6547653 Ferrule holder assembly for optical-fiber-end-face grinding apparatus Apr. 15, 2003
6398632 Workpiece holder Jun. 4, 2002
6159072 Lens transport apparatus, a cup for securing an eyeglass lens during transport, and a method of transporting lenses Dec. 12, 2000
6086455 Apparatus for polishing surgical stents Jul. 11, 2000
5916013 Inner race grinding machine Jun. 29, 1999
5865577 Clamping device for working an engine Feb. 2, 1999
5681209 Housing grinding machine Oct. 28, 1997
5681208 Method and apparatus for grinding a crankshaft Oct. 28, 1997
5667425 Device for centering and clamping a component with a view to lapping it using an expansion lap Sep. 16, 1997
5634842 Apparatus for the precision grinding of conical seats for cylindrical nozzle workpieces Jun. 3, 1997
5577952 Multiple cage grinding device Nov. 26, 1996
5447467 Alignment adaptor means Sep. 5, 1995
5259156 Grinding method and clamping device Nov. 9, 1993
5245795 Pipe support apparatus Sep. 21, 1993
5187900 Auxiliary device for a machine tool Feb. 23, 1993
5109634 Method and apparatus for machining centering chamfers May. 5, 1992
5044122 Method and apparatus for beveling an inside edge of a glass article Sep. 3, 1991
5022195 Method and apparatus for machining centering chamfers Jun. 11, 1991
4914871 Method for honing thin wall gear parts Apr. 10, 1990
4873794 Holder for milling countersink filler plugs Oct. 17, 1989
4839997 Brush seal manufacture Jun. 20, 1989
4776136 Fiber optic polishing bushing Oct. 11, 1988
4718203 Method for working the funnel portion of a cathode ray tube Jan. 12, 1988
4680894 Fixture for honing thin wall gear parts Jul. 21, 1987
4586292 Machine imparting complex rotary motion for lapping a spherical inner diameter May. 6, 1986
4567695 Method and apparatus for machining roller bearings Feb. 4, 1986
4527357 Internal grinding machine Jul. 9, 1985
RE31897 Method for the alteration of a lens May. 28, 1985
4509298 Pneumatic clamp mounting for a disc Apr. 9, 1985
4502255 Apparatus for holding workpieces Mar. 5, 1985
4483105 Device to hold workpieces for the honing of their axial center bore Nov. 20, 1984
4470535 Method of processing a front cover for a torque converter Sep. 11, 1984
4447991 Method for grinding or polishing curved surfaces of solid bodies and apparatus for carrying out this method May. 15, 1984
4420912 Apparatus for holding workpieces during honing work Dec. 20, 1983
4290236 Method and apparatus for manufacturing a contoured internal diameter bushing Sep. 22, 1981
4241546 Holding device for cup-shaped glassware articles in a glass processing machine Dec. 30, 1980
4185419 Working method for the automatic bursting-off and grinding the edges of glasses, and automatic machine for carrying out such method Jan. 29, 1980
4173100 Cannula grinding cartridge and fixture Nov. 6, 1979
4137674 Method of concentric grinding Feb. 6, 1979
4123876 Casting cut-off machine Nov. 7, 1978
4094103 Workpiece-holding fixture for honing machine Jun. 13, 1978
3962833 Method for the alteration of a lens and an adhesive lens blocking pad used therein Jun. 15, 1976

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