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Class Information
Number: 451/430
Name: Abrading > Attachment > Valve or valve seat abrader
Description: Attachment especially adapted for grinding a surface of the stationary portion or a movable portion of a valve.










Sub-classes under this class:

Class Number Class Name Patents
451/431 Orbital tool 16


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8585464 Lapping system and method for lapping a valve face Nov. 19, 2013
8539673 Method and device for machining a sealing seat of a shut-off valve Sep. 24, 2013
7871312 Hydrant grinding arrangement Jan. 18, 2011
7662026 Valve gasket sealing surface refurbishing methods and systems Feb. 16, 2010
6957659 Sliding disk valve for pneumatic conveyance of abrasive material Oct. 25, 2005
6921322 Apparatus and methods for refinishing a surface in-situ Jul. 26, 2005
6845783 Sliding disk valve for pneumatic conveyance of abrasive material Jan. 25, 2005
6325575 Tool for machining multiple surfaces on a stationary workpiece Dec. 4, 2001
6267653 Device for grinding an end face, especially an annular surface at the edge of a workpiece bore Jul. 31, 2001
6248008 Valve lapping tool Jun. 19, 2001
6173494 Method of making a valve seat Jan. 16, 2001
6099213 Automatic boring device Aug. 8, 2000
6042456 Suction operated valve resurfacing tool and associated method Mar. 28, 2000
5934976 Method for grinding a taper surface and grinding apparatus using the same Aug. 10, 1999
5931728 Device for carrying out mechanical tooling of a valve seat Aug. 3, 1999
5897429 Injection molding seat lapping device Apr. 27, 1999
5882250 Valve refacing tool Mar. 16, 1999
5829928 Apparatus and method for machining valve seats in an engine cylinder head Nov. 3, 1998
5749774 Valve refacing tool May. 12, 1998
5725335 Apparatus for machining valve seats in an engine cylinder head Mar. 10, 1998
5613809 Apparatus and method for machining valve seats in an engine cylinder head Mar. 25, 1997
5337521 Valve grinder Aug. 16, 1994
5319916 Valve stem polishing method Jun. 14, 1994
5303509 Apparatus for producing sealing faces on valves Apr. 19, 1994
5218788 Valve stem polishing method and apparatus Jun. 15, 1993
5148633 Tool for resurfacing exhaust port flanges Sep. 22, 1992
5133154 Apparatus and fixture for use in grinding the needle tip and the needle seat in a fuel valve Jul. 28, 1992
5097635 Method and apparatus for automatic ball to seat lapping Mar. 24, 1992
5030041 Compact boring system Jul. 9, 1991
5030046 Valve seal ring seating machine Jul. 9, 1991
5001871 Machine for precision machining, with a rod for the determination of the practical mean axis of a hole of cylindrical general contour Mar. 26, 1991
4996799 Frost-free silcock seat repair tool Mar. 5, 1991
4958464 Lapping machine Sep. 25, 1990
4901752 Apparatus for maintenance of ball valve Feb. 20, 1990
4852306 Toolholder device for a machine tool Aug. 1, 1989
4833835 Portable liquid and gas valve seat grinder May. 30, 1989
4800684 Apparatus for grinding and lapping sealing surfaces in slide valves and the like in situ or in the workshop Jan. 31, 1989
4715149 Steady rest for valve grinding apparatus Dec. 29, 1987
4678379 Apparatus for machining a valve's seat Jul. 7, 1987
4672786 Valve seat grinding apparatus Jun. 16, 1987
4637762 Hand-operated valve refacer Jan. 20, 1987
4630977 Valve seat resurfacing apparatus Dec. 23, 1986
4627461 Self cleaning valve Dec. 9, 1986
4620395 Valve grinding apparatus Nov. 4, 1986
4610112 Apparatus for grinding and/or reconditioning plane, annular surfaces Sep. 9, 1986
4581854 Valve grinding apparatus Apr. 15, 1986
4566229 Honing tool Jan. 28, 1986
4555205 Reamer holding device for machining valve seats Nov. 26, 1985
4545152 Grinding apparatus Oct. 8, 1985
4545706 Method and machine for machining the surface of a valve seat Oct. 8, 1985

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