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Class Information
Number: 137/860
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Resilient material valve > Annulus
Description: Valve wherein the resilient member is in the form of a ring which is carried by but not secured to a mounting and which either slides along or freely expands with respect to the mounting.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8459304 Air intake module of water feeding apparatus Jun. 11, 2013
8453667 Cleaning water supply device Jun. 4, 2013
8230884 Control valve with profiled packing element Jul. 31, 2012
8225818 Hydraulic valve arrangement with an annular check valve element Jul. 24, 2012
7951474 Gas release valve May. 31, 2011
7896024 Backpressure relief valve Mar. 1, 2011
7648350 Conveying device Jan. 19, 2010
7575004 Gas mask for normal pressure operation and overpressure operation Aug. 18, 2009
7540304 Elastomeric check valve Jun. 2, 2009
7458392 Spring actuated check valve Dec. 2, 2008
7389791 Backflow preventer Jun. 24, 2008
7331361 Pressure relief valve with direct hydraulic damping Feb. 19, 2008
7228875 Seal and bleed valve unit for electric batteries Jun. 12, 2007
7117891 Hydraulic coupling comprising a pressure bleed device Oct. 10, 2006
6968863 Non-return valve Nov. 29, 2005
6899126 Check valve and valve arrangement comprising such a check valve May. 31, 2005
6837267 Cartridge insert for a fluid line Jan. 4, 2005
6820652 Multi-channel valve Nov. 23, 2004
6695011 Flow regulator Feb. 24, 2004
6619324 Non-return bias valve mechanism for a fluid pumping assembly Sep. 16, 2003
6318979 Piston pump Nov. 20, 2001
6298873 Two-way check valve Oct. 9, 2001
6173738 Pressure maintenance valve for pneumatic apparatus such as air spring systems Jan. 16, 2001
5827218 Surgical suction pool tip Oct. 27, 1998
5762103 Tilting o-ring check valve Jun. 9, 1998
5695478 Safety connector for infusion therapy Dec. 9, 1997
5682920 Valve device for priming a pump, particularly for coffee making machines Nov. 4, 1997
5664938 Mixing apparatus for microflow gradient pumping Sep. 9, 1997
5613615 Venting cap for masking Mar. 25, 1997
5346178 Pressure equalized flow control valve Sep. 13, 1994
5324181 Precisely adjustable pneumatic calibration pump Jun. 28, 1994
5279330 One-way disc valve Jan. 18, 1994
5275337 High pressure limiting valve with fast response and fuel injector equipped therewith Jan. 4, 1994
5275541 Fluid-operated valve for pumps and the like Jan. 4, 1994
5217249 Pressure relief for a passenger side air bag Jun. 8, 1993
5174504 Airblast fuel injector Dec. 29, 1992
5139175 Air distributing device Aug. 18, 1992
5082024 Valve assembly including a hollow conduit Jan. 21, 1992
5080139 Valve assembly with disk-like valve body Jan. 14, 1992
5070872 Metering device for a lung-demand valve Dec. 10, 1991
5055003 Liquid driven jet pump Oct. 8, 1991
5014918 Airblast fuel injector May. 14, 1991
4973319 Slit valve medical catheter Nov. 27, 1990
4906174 Non-return valve for pulsating burners Mar. 6, 1990
4820052 Air distribution head Apr. 11, 1989
4796858 Dual seal valve Jan. 10, 1989
4722731 Air check valve Feb. 2, 1988
4708156 Fuel burner pump assembly Nov. 24, 1987
4702280 Irrigation leakage prevention device Oct. 27, 1987
4690171 Valve assembly for a sphygmomanometer Sep. 1, 1987

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