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Class Information
Number: 137/505.14
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Bias variable during operation
Description: Devices with means for automatically varying the opening bias on the valve, so that a variation of fluid condition through the valve (without closing the valve) may be obtained, (e.g., gas supply regulators which permit a greater flow during the high demand period).










Sub-classes under this class:

Class Number Class Name Patents
137/505.15 Ancillary reactor surface responds to inlet pressure 23
137/505.16 Liquid transfer 4
137/505.17 Weight 1


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8622080 Pressure reducer Jan. 7, 2014
8607818 Pressure relief valve Dec. 17, 2013
RE44537 Dual gas pressure regulator for a household appliance Oct. 15, 2013
8474479 Multifunction relief valve and airplane emergency hydraulic power source unit having the same Jul. 2, 2013
8469052 Control valve Jun. 25, 2013
8371329 Pilot device with remote pressure control for gas pressure regulators Feb. 12, 2013
8360098 Monodirectional intake pressure stabilization structure of pneumatic tool Jan. 29, 2013
8347920 Pressurized fluid positioner control system Jan. 8, 2013
8336577 Pressurized gas containing system Dec. 25, 2012
8327877 Pressure reducing apparatus Dec. 11, 2012
8276612 System and method for hydraulically managing fluid pressure downstream from a main valve Oct. 2, 2012
8171916 Fuel supply systems May. 8, 2012
7874500 Snow making apparatus Jan. 25, 2011
7789102 Air compressor having a pneumatic controller for controlling output air pressure Sep. 7, 2010
7789657 Pressure regulator with bleed orifice Sep. 7, 2010
7748401 Gas pressure regulator and method for assembling and disassembling the regulator Jul. 6, 2010
7699072 Device for regulating the delivery pressure of combustible gases Apr. 20, 2010
7600529 Dual gas pressure regulator for a household appliance Oct. 13, 2009
7578310 Pressure controller device Aug. 25, 2009
7360555 Gas regulator with altimetric adjustment Apr. 22, 2008
7191768 Gas fuel feed device Mar. 20, 2007
7192665 Regulator for fuel cell Mar. 20, 2007
7007713 Pressure control apparatus Mar. 7, 2006
6986338 Fluid flow pressure regulator Jan. 17, 2006
6935362 Pilot valve Aug. 30, 2005
6866061 Back pressure valve with dynamic pressure control Mar. 15, 2005
6758238 Combined pressure regulator and shut-off valve Jul. 6, 2004
6705342 Modulating gas valve with natural/LP gas conversion capability Mar. 16, 2004
6691798 Variable hand pressure activated power tool Feb. 17, 2004
6641004 Dispensing assembly for automatically adjusting the carbon dioxide level in beer in a draught beer keg Nov. 4, 2003
6516827 Gas regulator for flowmeter Feb. 11, 2003
6478040 Gas supplying apparatus and gas substitution method Nov. 12, 2002
6405722 Single stage regulator and method for regulating compressed air therefor Jun. 18, 2002
6363959 Fluid pressure regulator with differential pressure setting control Apr. 2, 2002
6341620 Pressure limiting valve Jan. 29, 2002
6302143 Two-stage servo gas pressure regulator module Oct. 16, 2001
6296012 Fuel pressure regulator with fuel temperature responsive shape memory calibration Oct. 2, 2001
6170507 Gas valve with natural/LP gas conversion capability Jan. 9, 2001
6076549 Pressure control device Jun. 20, 2000
6056008 Intelligent pressure regulator May. 2, 2000
6006780 Two-stage, warm-gas high pressure regulator Dec. 28, 1999
5967167 Remote controlled drinker system Oct. 19, 1999
5799688 Automatic flow control valve Sep. 1, 1998
5787925 Pneumatically servoed gas pressure regulator Aug. 4, 1998
5706853 Valve, especially a thermostatic expansion valve Jan. 13, 1998
5694975 Pressure regulator Dec. 9, 1997
5657787 Gas pressure reducing regulator Aug. 19, 1997
5642724 Fluid mixing systems and gas-fired water heater Jul. 1, 1997
5540252 Pneumatically stabilized inline valve Jul. 30, 1996
5515930 Handheld pneumatic power tool apparatus May. 14, 1996

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