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Class Information
Number: 137/497
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > Responsive to change in rate of fluid flow
Description: Apparatus in which the separate reactive surface which controls the valve is responsive to variations in the rate of flow of fluid through the apparatus or to variations in the pressure differential along the line under flow conditions.










Sub-classes under this class:

Class Number Class Name Patents
137/500 Expansible chamber subject to differential pressures 23
137/504 Movable deflector or choke 213
137/499 Turbine or swinging vane type reactor 49
137/498 Valve closes in response to excessive flow 150


Patents under this class:

Patent Number Title Of Patent Date Issued
8701715 Flow check valve assembly and method Apr. 22, 2014
8671974 Flow-actuated actuator and method Mar. 18, 2014
8656944 Combined metering valve and pressure regulating valve Feb. 25, 2014
8555916 Solenoid valve having flow control function Oct. 15, 2013
8276611 Externally adjustable pressure compensated flow control valve Oct. 2, 2012
8205637 Flow-actuated actuator and method Jun. 26, 2012
8205636 Flow rate control valve Jun. 26, 2012
8201713 Pressure compensation member Jun. 19, 2012
7775235 Apparatus and methods for containing a fuel pressure regulator Aug. 17, 2010
6330878 Evaporative emission leak detection system including vacuum regulator with sensitive seal Dec. 18, 2001
6328061 Variable flow area refrigerant expansion device Dec. 11, 2001
6305414 Variable flow area refrigerant expansion device Oct. 23, 2001
6289924 Variable flow area refrigerant expansion device Sep. 18, 2001
6202678 Gas discriminating valve for shutting off excessive flow of liquids Mar. 20, 2001
RE36637 Flow regulator Apr. 4, 2000
5918628 Multi-stage check valve Jul. 6, 1999
5687760 Flow regulator Nov. 18, 1997
5597011 Flow regulator Jan. 28, 1997
5234025 Partitioned flow regulating valve Aug. 10, 1993
5129620 Sealed magnetically operated flow control valve assembly Jul. 14, 1992
5129619 Sealed magnetically operated flow control valve assembly Jul. 14, 1992
4858636 Preset microscopic flow valve apparatus and method Aug. 22, 1989
4856552 Flow regulating device Aug. 15, 1989
4796619 Lung-controlled valve for respirator masks having positive pressures inside the mask Jan. 10, 1989
4622992 Reaction control valve Nov. 18, 1986
4545403 Flow regulating device Oct. 8, 1985
4415001 Pressure rise rate limiter valve Nov. 15, 1983
4186876 System powered damper blade assembly for use in an air conditioning system Feb. 5, 1980
3995656 High pressure gas regulator Dec. 7, 1976











 
 
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