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Class Information
Number: 137/246
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface
Description: Systems in which a separate fluid is applied between the valve and its seats to seal the valve against passage of the fluent material carried by the system.










Sub-classes under this class:

Class Number Class Name Patents
137/246.22 External pressure 78
137/246.13 Feed by or with actuation 4
137/246.23 Gravity or capillary feed 7
137/246.12 Line pressure feed 13
137/246.14 Loss control 0
137/246.11 Plural feed 6
137/246.15 Screw feed 4
137/246.21 Spring biased piston feed 1


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8678645 Device for monitoring the flow of water vapor Mar. 25, 2014
8555925 Pressure relief valve for a packaging container Oct. 15, 2013
8511345 Detecting and automatically responding to airborne hydrocarbon gas Aug. 20, 2013
8439072 Hydrocarbon gas delivery system May. 14, 2013
8371334 Rotary switching valve Feb. 12, 2013
8286940 Nozzle shutoff for an injection molding machine Oct. 16, 2012
7721752 Pressure relief valve for a packaging container May. 25, 2010
7490623 Pressure-relief one-way valve applicable to a package containing a gas-releasing product, wherein there coexist a fluid medium and an air bubble, and a package including said valve Feb. 17, 2009
7240796 Packaging release valve for refrigerated food items Jul. 10, 2007
7178550 Pressure control valve for a packaging container and device for attaching the pressure control valve to a material web Feb. 20, 2007
7025078 Clean-in-place valve and valve seat Apr. 11, 2006
6874525 Linear solenoid valve control device Apr. 5, 2005
6863510 Vacuum preventing oil seal for scroll compressor Mar. 8, 2005
6827105 Valve Dec. 7, 2004
6494687 Metering device for viscous liquids with a plurality of selectively engaged metering pumps, metering channels, supply channels, and bypass channels for flush cleaning Dec. 17, 2002
6468060 Oil film dilation for compressor suction valve stress reduction Oct. 22, 2002
6309194 Enhanced oil film dilation for compressor suction valve stress reduction Oct. 30, 2001
6220294 Switching valve for double-handled mixing faucet Apr. 24, 2001
6102680 Suction valve with release timing chamber Aug. 15, 2000
6099275 Biased open suction valve Aug. 8, 2000
6019122 Membrane-type inflation nozzle Feb. 1, 2000
6015601 Curling ribbon Jan. 18, 2000
5992442 Relief valve for use with hermetically sealed flexible container Nov. 30, 1999
5881759 Air-ventilating valve Mar. 16, 1999
5623957 Valve for controlling a gas or liquid flow Apr. 29, 1997
5520209 Fluid relief device May. 28, 1996
5427839 Overpressure valve for packaging containers Jun. 27, 1995
5375622 Multiport valve including leakage control system, particularly for a thermal regenerative fume incinerator Dec. 27, 1994
5354133 Relief valve Oct. 11, 1994
5313982 Gas supply piping device for a process apparatus May. 24, 1994
5311900 Leak resistant plug valve May. 17, 1994
5232009 Leak resistant plug valve Aug. 3, 1993
5048555 Process and apparatus for protecting and supporting a seal of a valve Sep. 17, 1991
4974707 Shock absorber Dec. 4, 1990
4890637 One way valve Jan. 2, 1990
4886424 Multi-piston swash plate type compressor with damping arrangement for discharge reed valves Dec. 12, 1989
4842026 Machine for filling receptacles with flowable materials and method of cleaning the machine Jun. 27, 1989
4842007 Self-sealing valve for inflated bodies Jun. 27, 1989
4838325 Method and an arrangement for a filling valve in a packing machine Jun. 13, 1989
4830041 Reelable flow stopper for plugging fluid flow within a pipe May. 16, 1989
4726391 Rotary switching device provided with an axially displaceable conical chamber Feb. 23, 1988
4667709 Arrangement for dosingly filling of fluent filling material into containers May. 26, 1987
4573493 Sequentially controlled water mixer Mar. 4, 1986
4527771 Butterfly valve protector Jul. 9, 1985
4444219 Overpressure valve for packages with flexible walls Apr. 24, 1984
4431161 Rotary valve Feb. 14, 1984
4318422 Butterfly valve Mar. 9, 1982
4245968 Lubricating system for pump and control valve therefor Jan. 20, 1981
4142708 Valve and seal Mar. 6, 1979
4070161 Double seal gate valve structure Jan. 24, 1978

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