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Class Information
Number: 137/118.03
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Plural outflows > Biased open isolation valve
Description: Subject matter comprising an outlet valve in each outflow and wherein each outlet valve is held open in the absence of a fluid pressure by a flexibly adjustable device (e.g., a weight of the valve body itself, or a spring) and at least one valve closes in response to a sudden pressure drop or flow increase in the outlet line.










Patents under this class:

Patent Number Title Of Patent Date Issued
8616227 Multilevel microfluidic systems and methods Dec. 31, 2013
8475743 Multilevel microfluidic systems and methods Jul. 2, 2013
8251090 Faucet having a pressure release function Aug. 28, 2012
6857440 Safety valve Feb. 22, 2005
5960815 Air nozzle of inflating device Oct. 5, 1999
5509391 Helmoltz isolation spool valve assembly adapted for a hydraulically-actuated fuel injection system Apr. 23, 1996
5398594 Volume flow control for hydraulic systems of vehicles, especially for steering devices of motor vehicles Mar. 21, 1995
5287841 Flow divider and utilization system Feb. 22, 1994
5152312 Automatic shuttle valve Oct. 6, 1992
5085243 Hydraulic isolation valve for railway vehicle Feb. 4, 1992
4993447 Pressure-regulating method and apparatus Feb. 19, 1991
4913181 Priority valve and method for using same Apr. 3, 1990
4860781 Hydraulic isolation valve Aug. 29, 1989
4574894 Ball actuable circulating dump valve Mar. 11, 1986
4325400 Fluid flow equalizing valve arrangement Apr. 20, 1982
4320622 Pump unloader and accumulator charging valve Mar. 23, 1982
4301825 Fuel flow control valve assembly Nov. 24, 1981
4265269 Device for automatically cutting off damaged branches of pneumatic and hydraulic systems May. 5, 1981
4037617 Multiway pneumatic valve and its application to brake Jul. 26, 1977
3999932 Valve assembly having leak detection apparatus Dec. 28, 1976
3987703 Combined restrictor and dead engine lowering valve Oct. 26, 1976











 
 
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