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Class Information
Number: 137/533.27
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Weight biased > Valve body is the weight > Guided head > Guide stem > Head slidable on guide rod
Description: Devices in which the valve head is apertured and slides on the stationary rod-like element extending through the aperture.










Patents under this class:

Patent Number Title Of Patent Date Issued
8342168 System for heating liquid by solar radiation Jan. 1, 2013
7533692 Springless compressor valve May. 19, 2009
7445020 Relief valve assembly Nov. 4, 2008
7422030 Air admittance valve assembly Sep. 9, 2008
7222803 Liquid dispensing apparatus May. 29, 2007
7107780 Vacuum-breaking valve for a refrigerated compartment Sep. 19, 2006
6802701 Suction valve assembly of compressor Oct. 12, 2004
6668849 Check valve Dec. 30, 2003
6637456 Safety valve Oct. 28, 2003
6604544 Safety valve of tank for storing and carrying oil or chemical substance Aug. 12, 2003
6585001 Flow through ring valve for plastic extruding systems Jul. 1, 2003
6457952 Scroll compressor check valve assembly Oct. 1, 2002
6435201 Non-return valve Aug. 20, 2002
6435208 Flame-retardant pressure equalizing valve Aug. 20, 2002
6415816 Air admittance valve assembly Jul. 9, 2002
6308731 Vent valve Oct. 30, 2001
RE35532 Air Admittance valve for resisting high internal pressure Jun. 17, 1997
5620021 Thermal check valve Apr. 15, 1997
5584676 Compressor discharge valve having a guided spherical head Dec. 17, 1996
5477880 "V" shaped check stop Dec. 26, 1995
5375621 Check valves Dec. 27, 1994
5273068 Air admittance valve for resisting high internal pressure Dec. 28, 1993
4820137 Well pump Apr. 11, 1989
4770160 Vent damper Sep. 13, 1988
4556084 Air admittance valve Dec. 3, 1985
4470767 Vacuum pump with overload protection valve Sep. 11, 1984
4308887 Gas damper Jan. 5, 1982
4257445 Shielded vent port Mar. 24, 1981
4172465 Check valve Oct. 30, 1979
4147096 Breather vent for vapor vent valve Apr. 3, 1979
4134417 Quick release valve Jan. 16, 1979
4128105 Automatic shut-off valve and method of operation thereof Dec. 5, 1978
4103705 Pressure stabilizer device Aug. 1, 1978
4062479 Non-return valve assemblies in injection molding machines Dec. 13, 1977











 
 
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