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Class Information
Number: 137/315.3
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling reciprocating valve > Gate valve > Bifaced

Patents under this class:

Patent Number Title Of Patent Date Issued
6843889 Coke drum bottom throttling valve and system Jan. 18, 2005
6488263 Valve stem and method of manufacture; improved stem packing Dec. 3, 2002
6250604 Valve stem and method of manufacturing, improved stem packing Jun. 26, 2001
6247679 Valve stem and method of manufacture; improved stem packing Jun. 19, 2001
5464035 Gate-type, side-ported, line blind valve Nov. 7, 1995
5074526 In-line fluid flow control valve with apparatus for and method of installation in an existing fluid conduit Dec. 24, 1991
4964432 Method and means for mounting valve member on valve stem Oct. 23, 1990
4836238 Unitary valve filter combustion Jun. 6, 1989
4765361 Ported gate valve Aug. 23, 1988
4729400 Liquid control assembly Mar. 8, 1988
4709901 Fluid power operated sliding gate valve system for tank trucks, pipelines, storage tanks and the like Dec. 1, 1987
4610430 Self cleaning valve for powdery, granular and pasty products Sep. 9, 1986
4543981 Sliding gate valves Oct. 1, 1985
4541453 High temperature slide valve Sep. 17, 1985
4491145 Toggle gate valve Jan. 1, 1985
4456026 Control device particularly useful as manual slide valve Jun. 26, 1984
4408627 Exhaust brake valve unit Oct. 11, 1983
4316483 Valve having wear-prone parts removable through bonnet area Feb. 23, 1982
3958592 Safety shut-off valve May. 25, 1976

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