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Class Information
Number: 137/493.5
Name: Fluid handling > Line condition change responsive valves > Bi-directional flow valves > One head and seat carried by head of another > Supporting valve spring carried by supporting valve > Spring abuts guide for supported valve stem
Description: Apparatus wherein the spring of the carried valve abuts the guide for the stem of the carried valve.










Patents under this class:

Patent Number Title Of Patent Date Issued
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7066199 Valve assembly Jun. 27, 2006
6619497 Apparatus for venting a container containing fluid Sep. 16, 2003
6305412 Double acting pressure relief valve with low pressure seal Oct. 23, 2001
6196258 Pressure control valve and evaporation fuel discharge control device Mar. 6, 2001
6056029 Fuel-Transfer system May. 2, 2000
4561559 Fuel tank venting valve Dec. 31, 1985
4459086 Fuel injection pump for internal combustion engines Jul. 10, 1984
4300591 Anti-cavitation and overload relief valve for a hydraulic system Nov. 17, 1981
4270567 Control valve for use in hydraulic apparatus Jun. 2, 1981
4210170 Anti-cavitation and overload relief valve for a hydraulic system Jul. 1, 1980
4016903 Pilot operated pressure and vacuum relief valve Apr. 12, 1977
3939866 Fuel saving device Feb. 24, 1976











 
 
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