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Class Information
Number: 137/540
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve
Description: Valves in which the spring is coaxial with the valve.










Sub-classes under this class:

Class Number Class Name Patents
137/540.11 Broken valve parts retainer 1
137/543.19 Cage-type guide for stemless valves 94
137/543.21 Guide means integral and coplanar with valve disk 67
137/543.23 Head between spring and guide 79
137/543.15 Head slides on guide-rod concentric with spring 72
137/543.13 Spring abuts removable valve stem guide 57
137/543.17 Spring guides valve head 84
137/541 Spring in inlet 119
137/542 Valve stem extends through fixed spring abutment 132


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8684240 Pressure reducing and regulating valve comprising a tapping mechanism for a pressure cartridge that can be attached underneath a receptacle cover Apr. 1, 2014
8636025 Apparatus and methods to dispense fluid from a bank of containers and to refill same Jan. 28, 2014
8622081 Fluid flow control valve Jan. 7, 2014
8596481 Clutch oil reservoir cap Dec. 3, 2013
8561639 Flow check valve assembly and method Oct. 22, 2013
8539975 Drill string valve and method Sep. 24, 2013
8517703 Compressor including valve assembly Aug. 27, 2013
8434508 Relief valve May. 7, 2013
8424658 Pressure actuating valve for impact dispersal device Apr. 23, 2013
8408244 Sanitary installation part Apr. 2, 2013
8381753 Method for making a safety valve of a boiler of a device for making a hot beverage, particularly coffee, and safety valve Feb. 26, 2013
8375984 Multiple preset indexing pressure relief valve Feb. 19, 2013
8365764 Minimum pressure valve Feb. 5, 2013
8347458 Bypass-type motor protecting device for a vacuum cleaner Jan. 8, 2013
8316880 Oil filter bypass valve assembly for a generator Nov. 27, 2012
8276614 Suction valve of variable capacity compressor for vehicle Oct. 2, 2012
8256453 Vacuum regulator having selectable adjustment ranges Sep. 4, 2012
8221100 High pressure water pump valve and seal structure Jul. 17, 2012
8171954 Reclosable vacuum-tight pressure-relief device having a deformable seal member May. 8, 2012
8152909 Gas chromatography check valve and system Apr. 10, 2012
8146617 Check valve Apr. 3, 2012
8136547 Poppet valve with diverging-converging flow passage and method to reduce total pressure loss Mar. 20, 2012
8091592 Board storage container and check valve Jan. 10, 2012
8020584 Variable valve for impact dispersal device Sep. 20, 2011
7980266 Soffit vent Jul. 19, 2011
7931126 Lubricator for equipment exposed to pressure Apr. 26, 2011
7895993 Internal combustion engine having exhaust gas recirculation Mar. 1, 2011
7857356 Smartcoupling--non responsive Dec. 28, 2010
7832422 Valve Nov. 16, 2010
7775405 Sprayer including pressure build-up discharge valve assembly with poppet valve having integrated spring Aug. 17, 2010
7766036 Discharge valve and valve assembly of reciprocating compressor having the same Aug. 3, 2010
7762276 Check valve Jul. 27, 2010
7721756 One-piece spring and poppet incorporated into a valve seat assembly and associated method for manufacturing a one-piece spring and poppet May. 25, 2010
7686033 Valve connector Mar. 30, 2010
7640944 Valve for prevention of low flow rates through flow meter Jan. 5, 2010
7631657 Explusion valve assembly Dec. 15, 2009
7628169 Safety relief valve having a low blow-down value and spring therefore Dec. 8, 2009
7624748 Valve Dec. 1, 2009
7581572 Fuel saving valve assembly Sep. 1, 2009
7559296 Cooling sprayer with valve Jul. 14, 2009
7552745 Valve connector Jun. 30, 2009
7546849 Rotating bonded valve assembly Jun. 16, 2009
7540431 By-pass valve for heat exchanger Jun. 2, 2009
7527241 Diaphargm valve and open close element for said valve May. 5, 2009
7527068 Valve with swirling coolant May. 5, 2009
7469714 Valve, especially a gas safety valve Dec. 30, 2008
7448407 Latched valve assembly Nov. 11, 2008
7428910 Breathable fire hydrant rod Sep. 30, 2008
7426932 Spray fill device and method for using the same Sep. 23, 2008
7367356 Oil flow control valve for a cam phaser May. 6, 2008

1 2 3 4 5 6










 
 
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