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Class Information
Number: 137/503
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > Responsive to change in rate of fluid flow > Expansible chamber subject to differential pressures > Pressures across flow line valve
Description: Apparatus in which the pressures to which the movable reaction member is subject are taken on opposite sides of the throttle valve which is operated by the reaction member and which valve regulates the fluid flow.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8375983 Multi-stage fluid regulators Feb. 19, 2013
8231102 Flow-control valve for heating/cooling system Jul. 31, 2012
7647942 Constant flow rate valve Jan. 19, 2010
7219850 Mechanical valve assembly May. 22, 2007
7066200 Insert for dynamic flow control Jun. 27, 2006
6923205 Pressure regulator and shut-off valve Aug. 2, 2005
6874530 Dosing unit and method for dosing liquid or gaseous educts for a fuel cell system Apr. 5, 2005
6786702 Fuel metering unit Sep. 7, 2004
6761185 Constant gas flow regulating device Jul. 13, 2004
6688319 Flow regulating control valve and method for regulating fluid flow Feb. 10, 2004
6688321 Method and apparatus for a flow regulator having an integral hinge Feb. 10, 2004
6623250 Fuel metering unit Sep. 23, 2003
6527195 Regulating insert to be placed in valves, and valve unit Mar. 4, 2003
6517342 Device for igniting fuel Feb. 11, 2003
6468051 Helical flow compressor/turbine permanent magnet motor/generator Oct. 22, 2002
6276491 Regulator for adjusting the fluid flow in a hydrostatic or aerostatic device Aug. 21, 2001
6205875 Flow restrictor assembly in transmission clutch control system Mar. 27, 2001
6202683 Fluid flow fuse Mar. 20, 2001
6199582 Flow control valve Mar. 13, 2001
6182688 Autonomous device for limiting the rate of flow of a fluid through a pipe, and fuel circuit for an aircraft comprising such a device Feb. 6, 2001
6117311 Positive shut off fuel pump dispensing filter Sep. 12, 2000
5904177 Fluid flow control device May. 18, 1999
5839467 Micromachined fluid handling devices Nov. 24, 1998
5806557 Water-operated hydraulic control valve Sep. 15, 1998
5722454 Fluid flow fuse Mar. 3, 1998
5685332 Valve assembly Nov. 11, 1997
5582203 System for controlling flow through a process region Dec. 10, 1996
5513672 Valve assembly May. 7, 1996
5509443 Pressure regulator for industrial process exhaust system Apr. 23, 1996
5474105 Overrun control device Dec. 12, 1995
5379797 Hydraulic fuse Jan. 10, 1995
5320124 Regulator adaptable for maintaining a constant partial vacuum in a remote region Jun. 14, 1994
5257537 Self actuating throttle valve Nov. 2, 1993
5251789 In-home drink dispenser Oct. 12, 1993
5251654 Flow regulator adaptable for use with exhaust from a process chamber Oct. 12, 1993
5244009 Assembly for flow regulation and for opening a flow-through conduit for liquids under pressure Sep. 14, 1993
5174339 Fluid flow control valve Dec. 29, 1992
5170638 Variable area refrigerant expansion device Dec. 15, 1992
5139119 Apparatus for damping resilient vehicle wheel suspension systems Aug. 18, 1992
5038822 Flow rate control valving apparatus Aug. 13, 1991
5010740 Refrigeration system with mass flow limiting device Apr. 30, 1991
4987916 Liquid flow control device Jan. 29, 1991
4986321 Fuel dispensing nozzle having a flow rate limiter Jan. 22, 1991
4957457 Control system for the hydraulic tilt function of a marine engine Sep. 18, 1990
4940538 Apparatus for decalcifing water by producing turbulence Jul. 10, 1990
4889158 Pressure/flow compensated direct acting pressure regulator Dec. 26, 1989
4870889 Hydraulic device for fuel pumping apparatus Oct. 3, 1989
4867198 Adjustable flow regulating valve Sep. 19, 1989
4827971 Constant air flow rate valve, and procedure for controlling a constant air flow rate valve May. 9, 1989
4825649 Shutoff and pressure regulating valve May. 2, 1989

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