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Class Information
Number: 137/513.3
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > With leak passage
Description: Devices in which means are provided to permit limited flow through the valve when the valve is closed, or nominally closed.










Sub-classes under this class:

Class Number Class Name Patents
137/513.7 Bypass in valve casing 72
137/513.5 Permits flow at valve interface 134


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8646485 Flow restrictor and method for reducing resistance of a flow Feb. 11, 2014
8517051 Automatic flow control regulator valve Aug. 27, 2013
8485220 Automatic flow regulator valve Jul. 16, 2013
8474415 Internally dampened pressure relief valve Jul. 2, 2013
8292262 Flow control valve Oct. 23, 2012
8276618 Flow restrictor and method for reducing resistance of a flow Oct. 2, 2012
8251066 Exhalation port with built-in entrainment valve Aug. 28, 2012
8191571 Fluid circuit breaker quick disconnect coupling Jun. 5, 2012
8092198 Fuel pump for internal combustion engine Jan. 10, 2012
8002040 System and method for controlling flow in a wellbore Aug. 23, 2011
7931452 Suction throttle valve of a compressor Apr. 26, 2011
7921874 Flow variation valve assembly Apr. 12, 2011
7762276 Check valve Jul. 27, 2010
7726344 Device for dynamic control of a water flow Jun. 1, 2010
7681597 Thermostatic mixer with device for dynamic regulation of a water flow Mar. 23, 2010
7681598 Device for dynamic control of a water flow Mar. 23, 2010
7658405 Apparatus and method for providing extended inflator output Feb. 9, 2010
7641450 Transporting method and transporting facility for easily polimerizable material Jan. 5, 2010
7640944 Valve for prevention of low flow rates through flow meter Jan. 5, 2010
7581560 Check valve Sep. 1, 2009
7510127 Variable flow rate valve and method of reducing wear on same Mar. 31, 2009
7404538 Dual restrictor shut-off valve Jul. 29, 2008
7363940 Flow-rate restrictor insert for orifice expansion device Apr. 29, 2008
7320334 Valve Assembly Jan. 22, 2008
7293579 Poppet valve arrangements Nov. 13, 2007
7222637 Connector equipped with a valve May. 29, 2007
7140386 Surge suppression and safety cut-off valve Nov. 28, 2006
7082967 Modular umbrella valve Aug. 1, 2006
7004194 Check valve with pressure relief feature Feb. 28, 2006
6889707 Pressure actuated shut-off valve with membrane May. 10, 2005
6742540 Two-way orifice check valve device for hydraulic circuit Jun. 1, 2004
6719005 Combination check valve and pressure release valve Apr. 13, 2004
6546839 Flow regulation device Apr. 15, 2003
6520751 Variable displacement compressor having a noise reducing valve assembly Feb. 18, 2003
6419657 Flow regulator valve to optimize stent deployment and method of using the same Jul. 16, 2002
6363965 Manifold assembly Apr. 2, 2002
6340031 Check valve for refueling pipe of fuel tank Jan. 22, 2002
6203696 Fluid driven pumps and apparatus employing such pumps Mar. 20, 2001
6199583 Safety gas valve Mar. 13, 2001
6182457 Electronic variable orifice tube and system for use therewith Feb. 6, 2001
6132191 Check valve for scroll compressor Oct. 17, 2000
6053256 Fire extinguishing system Apr. 25, 2000
6006782 Snubber valve Dec. 28, 1999
5964410 Method and apparatus of uniform nozzle liquid application by way of vehicle Oct. 12, 1999
5924438 Gas-pressure relief valve unit, particularly for fuel vapors Jul. 20, 1999
5899224 Flow controls May. 4, 1999
5894741 Universal housing body for an expansion device having a movable orifice piston for metering refrigerant flow Apr. 20, 1999
5862676 Refrigerant expansion device Jan. 26, 1999
5832954 Check valve assembly for inhibiting Helmholtz resonance Nov. 10, 1998
5788372 Method and apparatus for reducing transient motion between an aircraft power member and structure during takeoff, landing and maneuvers Aug. 4, 1998

1 2 3 4










 
 
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