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Class Information
Number: 137/243
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Cleaning or steam sterilizing > Mechanical cleaning > Valve grinding motion of valve on seat
Description: Systems in which the fluent material system or a part thereof has means for giving the valve or its seat a motion which produces cleaning or grinding of the valve and/or its seat.










Sub-classes under this class:

Class Number Class Name Patents
137/243.1 Concentric stem 2
137/243.3 Lost motion permits grinding 2
137/243.5 Nut releasable from body and/or stem 0
137/243.2 Spring pressed 5
137/243.6 With independent grinding actuator 7
137/243.4 With swivel-preventing means 1


Patents under this class:

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
8308449 Wave energy converter Nov. 13, 2012
7487789 Gaseous fluid metering valve Feb. 10, 2009
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
6726174 Control valve, especially for an internal combustion engine, for the controlled recycling of exhaust gases Apr. 27, 2004
6123097 Apparatus and methods for controlling process chamber pressure Sep. 26, 2000
5988592 Valves Nov. 23, 1999
5971889 Solenoid self-cleaning pressure valve for automatic vehicle transmission Oct. 26, 1999
4884923 Vehicle for bulk transport of powder-form, granular or pellet-like material Dec. 5, 1989
4676279 Filler for aseptic dispensing of particulate garnish Jun. 30, 1987
4376885 Process and apparatus for producing a ring unit for the valve parts of labyrinth valves Mar. 15, 1983
4367766 Slide valve Jan. 11, 1983
4305419 Self-cleaning water faucet valve construction Dec. 15, 1981
4236547 Self-cleaning valve plug and seat assembly Dec. 2, 1980
4134372 Valve rotating device Jan. 16, 1979











 
 
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