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Class Information
Number: 137/461
Name: Fluid handling > Line condition change responsive valves > Safety cut-off requiring reset > High pressure cut-off
Description: Apparatus in which the valve is closed in response to an increase in pressure beyond a maximum.










Patents under this class:

Patent Number Title Of Patent Date Issued
8671972 Safety valve system for overpressure protection of hydraulic circuits Mar. 18, 2014
8616230 Dual-acting multi-actuation mode gate valve Dec. 31, 2013
8474480 Actuator control valve Jul. 2, 2013
8327874 Apparatus for wellhead high integrity protection system Dec. 11, 2012
8316878 Servo-operated valve Nov. 27, 2012
8051875 Pipeline protection system Nov. 8, 2011
7997947 Deep water hydrocarbon transfer system Aug. 16, 2011
7621702 Timing element for a lubricant dosing unit, lubricant dosing unit, and method for dosing a lubricant Nov. 24, 2009
7246634 Drill for tapping pipe with safety device in branch pipe Jul. 24, 2007
7025083 Quick closing shut-off valve Apr. 11, 2006
6880567 Over-pressure protection system Apr. 19, 2005
6834666 Apparatus for outputting compressed air in compressor Dec. 28, 2004
6651686 Valve actuator system Nov. 25, 2003
6484742 Cartridge assembly for valve Nov. 26, 2002
6103079 Anti-leakage apparatus Aug. 15, 2000
5906219 Pressure sensitive valves May. 25, 1999
5810057 Pressure vessel fill protective device Sep. 22, 1998
5752544 Device for feeding a distribution network with gaseous fluid May. 19, 1998
5323799 Fully mechanical pressure relief system Jun. 28, 1994
5240034 Safety and automatic stop device, in particular for gas expansion stations Aug. 31, 1993
5209253 Emergency shutoff valve and regulator assembly May. 11, 1993
5146942 Low pressure fluid emergency shutdown valve Sep. 15, 1992
5113899 Check valve with valve opening device May. 19, 1992
5067511 High presssure fluid emergency shutoff valve Nov. 26, 1991
5036666 Stable position bleed valve with O-ring detent Aug. 6, 1991
4889150 Pressure control for earthquake sensitive shut-off valve Dec. 26, 1989
4768539 Pipeline safety valve Sep. 6, 1988
4727903 Fluid shutoff valve Mar. 1, 1988
4597409 Safety device against overpressure particularly for gas pressure control apparatus Jul. 1, 1986
4586526 Arrangement for controlling communication between a tubular member and an inflatable element supported on the tubular member in a well bore May. 6, 1986
4550746 Regulator for mounting on the outlet connection of a gas cylinder or like container Nov. 5, 1985
4503883 Gas pressure regulator with under and over shut-off Mar. 12, 1985
4457334 Pressure sensitive valve actuator Jul. 3, 1984
4286768 Stepped pressure gas valve apparatus Sep. 1, 1981
4260164 Inflatable packer assembly with control valve Apr. 7, 1981
4240458 Excess pressure shutoff valve Dec. 23, 1980
4223692 Recreational vehicle safety system Sep. 23, 1980
4188971 Fluid cutout valve Feb. 19, 1980
4180241 Solenoid operated valve and shut-off device Dec. 25, 1979
4179097 Safety shut-off valve Dec. 18, 1979
4176679 Check valve Dec. 4, 1979
RE30063 High pressure safety valve Aug. 7, 1979
4161960 High and low tubing pressure actuated well safety valve Jul. 24, 1979
4134421 Closing spring assembly for slam-shut valves Jan. 16, 1979
4067095 Closing spring assembly for slam-shut valves Jan. 10, 1978
4067359 Reset assembly for slam-shut valves Jan. 10, 1978
4033374 Latch assembly for slam-shut valves Jul. 5, 1977
4026314 High pressure safety valve May. 31, 1977
3993136 Apparatus for operating a closure element of a subsurface safety valve and method of using same Nov. 23, 1976
3971405 Pressure controlled hydrant valve coupler Jul. 27, 1976











 
 
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