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Class Information
Number: 137/543.21
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Guide means integral and coplanar with valve disk
Description: Valves wherein a guide means integral and coplanar is provided on the stemless valve disk, said guide means contacting the walls of the valve casing.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701631 Pressure relief valve and high pressure pump with such valve Apr. 22, 2014
8592063 Battery pack pressure valve Nov. 26, 2013
8347458 Bypass-type motor protecting device for a vacuum cleaner Jan. 8, 2013
8342823 Sludge suction apparatus for offshore structure Jan. 1, 2013
8276614 Suction valve of variable capacity compressor for vehicle Oct. 2, 2012
8221100 High pressure water pump valve and seal structure Jul. 17, 2012
8028926 Thermostat valve arrangement Oct. 4, 2011
7762276 Check valve Jul. 27, 2010
7581560 Check valve Sep. 1, 2009
7431048 Backflow preventer Oct. 7, 2008
7367361 Eductor apparatus May. 6, 2008
7293579 Poppet valve arrangements Nov. 13, 2007
7270147 Adjustable variable flow fertilizer valve Sep. 18, 2007
7096884 Check valve Aug. 29, 2006
6971406 Backflow prevention valve Dec. 6, 2005
6637410 High pressure fuel supply apparatus Oct. 28, 2003
6435208 Flame-retardant pressure equalizing valve Aug. 20, 2002
RE37322 Two-piece check valve assembly Aug. 14, 2001
6237633 Low emission disconnect system May. 29, 2001
6199583 Safety gas valve Mar. 13, 2001
6179589 Scroll machine with discus discharge valve Jan. 30, 2001
6155295 Low emission disconnect system Dec. 5, 2000
6089262 Retained seat check valve Jul. 18, 2000
5842504 Safety valve for an inverted liquid-filled canister Dec. 1, 1998
5797427 Fuel injector check valve Aug. 25, 1998
5794657 Safety check valve for fuel delivery system Aug. 18, 1998
5725019 Pressure retaining valve Mar. 10, 1998
5692539 Check valve for liquids Dec. 2, 1997
5669412 Two-piece check valve assembly Sep. 23, 1997
5546981 Check valve Aug. 20, 1996
5451148 Check valve device for scroll compressor Sep. 19, 1995
5349984 Check valve Sep. 27, 1994
5253987 Fluid end for high-pressure fluid pumps Oct. 19, 1993
5183075 Check valve Feb. 2, 1993
5139047 Miniature check valve construction Aug. 18, 1992
5092361 Inline type check valve Mar. 3, 1992
5092229 Entirely uniformly heated responsive cooker Mar. 3, 1992
5076328 Pressure relief valve assembly Dec. 31, 1991
4971093 Check valve Nov. 20, 1990
4961449 Reservoir cap Oct. 9, 1990
4921007 Master brake cylinder suction refill valve May. 1, 1990
4913182 Plumbing fixture check stop Apr. 3, 1990
4905730 Override check valve Mar. 6, 1990
4867200 Unidirectional fluid flow check valve assembly Sep. 19, 1989
4865136 Pressure relief valve for roller bit Sep. 12, 1989
4815493 Cartridge bypass valve Mar. 28, 1989
4815284 Exhaust manifold device Mar. 28, 1989
4790348 Low pressure relief valve Dec. 13, 1988
4766930 Check valve with self-guided shutter in the valve body Aug. 30, 1988
4687421 Frangible pressure relief disc assembly and positive displacement pumps containing the disc assembly Aug. 18, 1987

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