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Class Information
Number: 137/330
Name: Fluid handling > Non-valving motion of the valve or valve seat
Description: Apparatus in which means is provided for moving either a valve or a valve seat with respect to its cooperating member independently of opening or closing movement in such a direction or between such limits as to be ineffective to open or close the valve, usually to reduce friction or to prevent sticking or to equalize wear.










Sub-classes under this class:

Class Number Class Name Patents
137/331 Rotary motion of a reciprocating valve 34


Patents under this class:

Patent Number Title Of Patent Date Issued
8261761 Selectively movable seat arrangement and method Sep. 11, 2012
7351179 Stepper motor driven proportional actuator Apr. 1, 2008
6957659 Sliding disk valve for pneumatic conveyance of abrasive material Oct. 25, 2005
6845783 Sliding disk valve for pneumatic conveyance of abrasive material Jan. 25, 2005
5396919 Rotating disc valve Mar. 14, 1995
5284220 Pressure control valve assembly for hydraulic circuit and automotive rear wheel steering system utilizing the same Feb. 8, 1994
5222417 Hydraulic control system of an automatic transmission for a motor vehicle Jun. 29, 1993
5123819 Pressure fluid pumping device with a reciprocating piston pump Jun. 23, 1992
5092358 Pressure regulation Mar. 3, 1992
4960365 Hydraulic control apparatus Oct. 2, 1990
4901752 Apparatus for maintenance of ball valve Feb. 20, 1990
4660592 Butterfly valve Apr. 28, 1987
4590983 Precision vacuum melting and casting furnace with a melting chamber and a casting chamber May. 27, 1986
4449547 Long life gate valve May. 22, 1984
4448213 Water valve May. 15, 1984
4442851 Cleaning of objects with solvent Apr. 17, 1984
4432387 Rotating disc gate valve Feb. 21, 1984
4401238 Devices used for filling containers Aug. 30, 1983
4373546 Long life valve Feb. 15, 1983
4367766 Slide valve Jan. 11, 1983
3931934 Particulate material spreading apparatus Jan. 13, 1976











 
 
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