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Class Information
Number: 137/459
Name: Fluid handling > Line condition change responsive valves > Safety cut-off requiring reset > Responsive to change in rate of flow
Description: Apparatus which includes a mechanism which senses and is responsive to variations in the velocity of the fluid flowing through the line.










Sub-classes under this class:

Class Number Class Name Patents
137/460 Excessive flow cut-off 200


Patents under this class:

Patent Number Title Of Patent Date Issued
8522815 Gas shutoff device Sep. 3, 2013
7287444 Transmission pressure modulation by orificed check valve Oct. 30, 2007
7063104 Flow-through pressure regulator including a closure member assembly integrated with a housing Jun. 20, 2006
7036756 Anti-sputter fluid flow control apparatus for paint sprayers May. 2, 2006
6929237 Valve actuation system and methods for pipeline valves Aug. 16, 2005
6745957 Fire hose nozzle comprising a safety device to prevent it from being displaced through the action of the water supplying it Jun. 8, 2004
6543479 Water monitoring system Apr. 8, 2003
6308730 Gas stream monitor Oct. 30, 2001
6119720 Flood control device Sep. 19, 2000
6026838 Method for detecting opening in fluid flow passageway and shutting off flow in response thereto Feb. 22, 2000
5967177 Pressure regulating valve Oct. 19, 1999
5950667 Apparatus for detecting opening in fluid flow passageway and shutting off flow in response thereto Sep. 14, 1999
5782263 Flood control device Jul. 21, 1998
5719367 Welding gun coolant control valve assembly Feb. 17, 1998
5327944 Apparatus for controlling fuel vapor flow Jul. 12, 1994
5179922 Apparatus for determining change of fuel flow Jan. 19, 1993
5046354 Pressurized storage tank with automatic shut-down in case of leakage Sep. 10, 1991
4966190 Check valve for a leak detector Oct. 30, 1990
4735231 Device for preventing leakage in pressure ducts Apr. 5, 1988
4535797 Automatic shut off valve Aug. 20, 1985
4180088 Water shutoff system Dec. 25, 1979
3971403 Safety valve Jul. 27, 1976











 
 
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