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Class Information
Number: 137/505
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator)
Description: Apparatus in which the flow controlling valve is biased toward an open position and a change in fluid condition tends to close the valve.










Sub-classes under this class:

Class Number Class Name Patents
137/505.25 Apertured reactor surface surrounds flow line 184
137/505.18 Balanced valve 117
137/505.14 Bias variable during operation 70
137/505.19 Liquid level responsive gas flow control 0
137/505.21 Main flow through isolated reactor chamber 5
137/505.12 Multi-stage 62
137/505.38 Reactor surface closes chamber 28
137/505.26 Reactor surface separated by apertured partition 29
137/505.13 Senses inlet pressure 98
137/505.22 Through external pipe 19
137/505.47 With mechanical movement between actuator and valve 35
137/505.2 With protective separator 2
137/505.11 With relief valve 65


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8679694 Fluidic control system and method of manufacture Mar. 25, 2014
8573441 Integrated valve regulator assembly and system for the controlled storage and dispensing of a hazardous material Nov. 5, 2013
8500092 Secondary seat for gas regulator Aug. 6, 2013
8439282 Low flow irrigation emitter May. 14, 2013
8424561 Pressure regulator Apr. 23, 2013
8397743 Internal relief valve apparatus for use with fluid regulators Mar. 19, 2013
8327876 Fluid controller Dec. 11, 2012
8322357 Integrity protection for pressurized bi-directional systems Dec. 4, 2012
8322569 Integrated valve regulator assembly and system for the controlled storage and dispensing of a hazardous material Dec. 4, 2012
8307843 Temperature-controlled pressure regulators Nov. 13, 2012
8272397 Valve for fuel cell based power generator Sep. 25, 2012
8240325 Gas flow device Aug. 14, 2012
8205636 Flow rate control valve Jun. 26, 2012
8117839 Propane injection system Feb. 21, 2012
8033293 Fluid regulator Oct. 11, 2011
7958768 System to control pressure in a test device Jun. 14, 2011
7909052 Apparatus and method for controlling gas flow Mar. 22, 2011
7866340 Universal pressure reducer for self-contained breathing apparatus Jan. 11, 2011
7624758 Fluid flow controller Dec. 1, 2009
7578311 Gas regulator Aug. 25, 2009
7556057 Gas pressure regulator Jul. 7, 2009
7520297 Pressure regulator device and system Apr. 21, 2009
7418973 Device to reduce noise in pressure regulators Sep. 2, 2008
7418976 Method and apparatus for pneumatic regulation including a high-pressure reserve Sep. 2, 2008
7363938 Constant flow valve assembly Apr. 29, 2008
7357143 Regulator and gas supply method using the same Apr. 15, 2008
7331345 Demand regulator protective bellows Feb. 19, 2008
7309113 Flow control system for a valve Dec. 18, 2007
7261119 Pressure regulator with improved outlet pressure control Aug. 28, 2007
7121298 Reducer valve for pressurized gas Oct. 17, 2006
7073490 Gas feeding system for an internal combustion engine, having an improved pressure reducing valve Jul. 11, 2006
7013894 Portable, handheld, pneumatic driven medicinal nebulizer Mar. 21, 2006
6955664 Suction regulator and fluid drainage system Oct. 18, 2005
6932108 Pressure reducer Aug. 23, 2005
6868863 Pressure reduction valve Mar. 22, 2005
6843266 Regulator with erosion resistant seal assemblies Jan. 18, 2005
6820643 Liquid pressure regulator with built-in antidrainage valve Nov. 23, 2004
6805145 Method and device for maintaining a fluid pressure in a defined volume Oct. 19, 2004
6789559 Pressure regulator Sep. 14, 2004
6758240 Bias spring structure for pressure regulators Jul. 6, 2004
6758239 Metal diaphragm structure for pressure regulators Jul. 6, 2004
6708712 Pressure regulator utilizing a disc spring Mar. 23, 2004
6705343 Pressure regulator with internal filter Mar. 16, 2004
6691735 Fine adjustment device for gas pressure regulators Feb. 17, 2004
6672331 Bonnet securement for gas pressure regulators Jan. 6, 2004
6637451 Pneumatic pressure regulator assembly Oct. 28, 2003
6631731 Flow regulator for water pump Oct. 14, 2003
6629544 Gas pressure-reducing valve Oct. 7, 2003
6615865 Valve for high pressure gas cylinders Sep. 9, 2003
6568418 Precision regulator May. 27, 2003

1 2 3










 
 
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