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Class Information
Number: 137/512.1
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Plural > Dividing and recombining in a single flow path
Description: Devices in which the valves are arranged in a single flow path and divide the flow into parallel paths which recombine after passing through the valves.










Sub-classes under this class:

Class Number Class Name Patents
137/512.15 Integral resilient member forms plural valves 242


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8689824 Disc check valve construction Apr. 8, 2014
8684030 Inflatable device with fluid controller and self-sealing valve Apr. 1, 2014
8668168 Space vehicle valve system Mar. 11, 2014
8596994 Compressor Dec. 3, 2013
8485801 Poppet valve assembly Jul. 16, 2013
8453670 Poppet valve with sloped purge holes and method for reducing a pressure force therein Jun. 4, 2013
8413277 Pneumatic lift with unidirectional valve Apr. 9, 2013
8414368 Fan damper Apr. 9, 2013
8408864 Device for regulating the flow rate of air feeding a turbine ventilation cavity of a turbomachine turbine section Apr. 2, 2013
8353311 Anti-flooding device Jan. 15, 2013
8302622 Unbalanced inlet fuel tube for a fuel pressure regulator Nov. 6, 2012
8291707 Multi-stage check valve Oct. 23, 2012
8291936 Non-return valve, in particular for medical uses Oct. 23, 2012
8282368 Check valve Oct. 9, 2012
8181669 Compliant check valve stop May. 22, 2012
8122911 Adjustable orifice for coal supply conduit Feb. 28, 2012
8118574 Radial suction valve assembly for a compressor Feb. 21, 2012
8069926 Method of controlling flow through a drill string using a valve positioned therein Dec. 6, 2011
7997296 Air valve device Aug. 16, 2011
7992588 Open state maintainable valve device for an inflatable article Aug. 9, 2011
7971603 Header for a heat exchanger Jul. 5, 2011
7959420 Constant torque unloader system for a compressor Jun. 14, 2011
7954509 Check valves with hinge shafts retained by welding Jun. 7, 2011
7950910 Piston cartridge May. 31, 2011
7906017 Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water Mar. 15, 2011
7819131 Springless compressor valve Oct. 26, 2010
7779859 Flapper with insert stops for check valve Aug. 24, 2010
7708074 Downhole valve for preventing zonal cross-flow May. 4, 2010
7695275 Air:fluid distribution system and method Apr. 13, 2010
7568498 Engineered composite quiet check valve Aug. 4, 2009
7565978 Vacuum packaging bags equipped with deflating device and deflating cylinders for use thereof Jul. 28, 2009
7562669 Check valve stop assembly and method of retention Jul. 21, 2009
7540301 Compressor valve Jun. 2, 2009
7527069 Electromagnetic split flapper pressure relief valve May. 5, 2009
7517280 Air duct assembly for a vehicle Apr. 14, 2009
7493770 Methods and apparatus for regulating airflow supply systems Feb. 24, 2009
7428914 Flow control valve Sep. 30, 2008
7422029 Linear damper for check valve Sep. 9, 2008
7370668 Valve for winterizing a pool May. 13, 2008
7325569 Butterfly valve with integral split flapper relief valve Feb. 5, 2008
7311740 Snap acting split flapper valve Dec. 25, 2007
7302962 Vehicle pressure relief valve having peripherally secured flaps and method of manufacturing the same Dec. 4, 2007
7302967 Reverse flow preventing device and electronic apparatus Dec. 4, 2007
7251948 Pressure equalizer of compressor of air conditioner Aug. 7, 2007
7225830 Fluid control valve Jun. 5, 2007
7219690 Flow control valve May. 22, 2007
7191796 Dual outlet air valve Mar. 20, 2007
7143783 Fuel tank cap safety valve with splash control and overpressure release Dec. 5, 2006
7128091 Sexless coupling for fire hydrant-fire hose connection Oct. 31, 2006
7114518 Flow regulating valve Oct. 3, 2006

1 2 3 4 5 6










 
 
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