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Class Information
Number: 451/115
Name: Abrading > Machine > By use of plural work holders, without tool > Of valve and seat
Description: Abrading machine in which the abrading is accomplished by mutual moving contact between plural workpieces intended to be used together to contain and adjustably restrict the flow of fluid.

Sub-classes under this class:

Class Number Class Name Patents
451/116 Plug cock 0
451/117 Poppet valve 3
451/118 Slide valve 0

Patents under this class:

Patent Number Title Of Patent Date Issued
8585464 Lapping system and method for lapping a valve face Nov. 19, 2013
7001255 Thermostat gasket cleaner Feb. 21, 2006
6921322 Apparatus and methods for refinishing a surface in-situ Jul. 26, 2005
6267653 Device for grinding an end face, especially an annular surface at the edge of a workpiece bore Jul. 31, 2001
5934976 Method for grinding a taper surface and grinding apparatus using the same Aug. 10, 1999
5890659 Valve closing body and process and device for producing sealing seats on valve closing bodies Apr. 6, 1999
5634842 Apparatus for the precision grinding of conical seats for cylindrical nozzle workpieces Jun. 3, 1997
5591068 Precision non-contact polishing tool Jan. 7, 1997
5315792 Method for producing sealing faces on valves May. 31, 1994
5303509 Apparatus for producing sealing faces on valves Apr. 19, 1994

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