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Class Information
Number: 137/543
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Valve stem extends through fixed spring abutment > Yoke or cage-type support for valve stem
Description: Valves which provide a transverse support for the valve stem, spaced from the valve and supported in its location by a plurality of elongated, circumferentially spaced members parallel to the valve stem, the support usually comprising a spring abutment.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8220483 Non-return valve Jul. 17, 2012
8147225 Pump valve having a limiting element Apr. 3, 2012
8083332 Dual seating quick connect valve Dec. 27, 2011
8020582 Excess flow valve Sep. 20, 2011
7726335 Check valve apparatus for fuel delivery systems Jun. 1, 2010
7635005 Very small high pressure regulator Dec. 22, 2009
7631657 Explusion valve assembly Dec. 15, 2009
7448407 Latched valve assembly Nov. 11, 2008
7370665 Tanks May. 13, 2008
7287547 Inlet or outlet valve for a pump Oct. 30, 2007
7207346 Hydrostat for portable gas range Apr. 24, 2007
7198061 Valve Apr. 3, 2007
7185671 Angled dual check valve Mar. 6, 2007
7082964 Attachment structure of a component in a fuel tank made of resin Aug. 1, 2006
7017563 Valve for controlling a fluid flow Mar. 28, 2006
6866062 Check valve Mar. 15, 2005
6695007 Suction valve Feb. 24, 2004
6470911 Check valve and fuel tank with check valve attached thereto Oct. 29, 2002
6415810 Water hammering prevention device Jul. 9, 2002
6050295 High flow valved fitting Apr. 18, 2000
5996618 Valve nozzle Dec. 7, 1999
5967179 Low profile discharge check valve Oct. 19, 1999
5921276 Piston-type check valve with diffuser Jul. 13, 1999
5743291 Sanitary safety device Apr. 28, 1998
5373868 Ball valve with modular check valve assembly and access port Dec. 20, 1994
5370150 Process for producing sanitary fitting and sanitary fitting produced according to the process Dec. 6, 1994
5313974 Pipeline pressure release apparatus and method May. 24, 1994
5297579 Ball and seat-type check valve for downhole rod pump Mar. 29, 1994
5261450 Pressure relief vent with surge suppression Nov. 16, 1993
5240037 Gas line check valve Aug. 31, 1993
5228469 Fluid control system Jul. 20, 1993
5195552 Check valve with exchangeable valving elements Mar. 23, 1993
5178185 Suction inlet valve for fire truck pumpers Jan. 12, 1993
5036882 Valve assembly for decanter for wastewater treatment facility Aug. 6, 1991
4993451 Valve for gas cylinders Feb. 19, 1991
4979721 Check valve having combined quick disconnect wrench flat defining ridge Dec. 25, 1990
4955407 Check valve insertable into a hose Sep. 11, 1990
4862913 Check valve Sep. 5, 1989
4768549 Retention valve particularly for liquid-bearing conduits Sep. 6, 1988
4702509 Long-haul vehicle streamline apparatus Oct. 27, 1987
4614661 Methods and apparatus for sanitary steam injection Sep. 30, 1986
4580596 Check valve with dual locking mechanism Apr. 8, 1986
4535808 Check valve Aug. 20, 1985
4506695 Plastic tire valve Mar. 26, 1985
4445537 Boiler feed water deaerator spray valve turbulence shield May. 1, 1984
4388940 Pressure relief device Jun. 21, 1983
4368756 Check valve Jan. 18, 1983
4203466 Non-return valve May. 20, 1980
4194527 Pressure limiting valve Mar. 25, 1980
4148338 Check valve Apr. 10, 1979

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