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Class Information
Number: 137/456
Name: Fluid handling > Line condition change responsive valves > Safety cut-off requiring reset
Description: Apparatus in which a valve closes in response to a change in internal condition of the line fluid but does not open when the line condition returns to its previous state, the necessary reopening or resetting operation being performed by an external operator, usually manually.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8671972 |
Safety valve system for overpressure protection of hydraulic circuits |
Mar. 18, 2014 |
| 8596608 |
Sub sea hybrid valve actuator system and method |
Dec. 3, 2013 |
| 8430115 |
Leak detection system for humidifier |
Apr. 30, 2013 |
| 8393352 |
Control system and method for water supply |
Mar. 12, 2013 |
| 8100141 |
Water supply control assembly with automatic shut-off and duty cycle reset |
Jan. 24, 2012 |
| 8066032 |
Apparatus for instantaneously terminating movement of flow material through a conduit |
Nov. 29, 2011 |
| 7913714 |
Check valve and shut-off reset device for liquid delivery systems |
Mar. 29, 2011 |
| 7658203 |
Fluid sensing shut-off devices with timer and methods of operation |
Feb. 9, 2010 |
| 7644723 |
Transmix prevention lock |
Jan. 12, 2010 |
| 7509973 |
System to prevent excess fluid flow with a secondary resetting shut-off valve assembly |
Mar. 31, 2009 |
| 7509975 |
Fluid sensing shut-off devices with timer and methods of operation |
Mar. 31, 2009 |
| 7357150 |
Safety shut-off device |
Apr. 15, 2008 |
| 7287444 |
Transmission pressure modulation by orificed check valve |
Oct. 30, 2007 |
| 7231934 |
Shut-off actuator with gas generation device |
Jun. 19, 2007 |
| 7077376 |
Water saver valve |
Jul. 18, 2006 |
| 6467694 |
Fail-safe structure cooling system |
Oct. 22, 2002 |
| 6460564 |
Automatic-locking shut-off valve for liquid suction systems |
Oct. 8, 2002 |
| 6186167 |
Emergency shutdown test system |
Feb. 13, 2001 |
| 6103079 |
Anti-leakage apparatus |
Aug. 15, 2000 |
| 5971011 |
Water shut-off valve and leak detection system |
Oct. 26, 1999 |
| 5927316 |
Safety cut-off system |
Jul. 27, 1999 |
| 5893388 |
Waterflow monitoring device |
Apr. 13, 1999 |
| 5829470 |
Differential volume sensing hydraulic control |
Nov. 3, 1998 |
| 5823235 |
Emergency shut-off mechanism for propane delivery systems and the like |
Oct. 20, 1998 |
| 5771920 |
Domestic water valve assembly |
Jun. 30, 1998 |
| 5640990 |
Flexible conduit failure safety valve |
Jun. 24, 1997 |
| 5624551 |
Hydraulic safety circuit for a hemodialysis apparatus |
Apr. 29, 1997 |
| 5607038 |
Hydraulic control valve assembly |
Mar. 4, 1997 |
| 5535777 |
Gas flow safety assembly |
Jul. 16, 1996 |
| 5503175 |
Water safety system |
Apr. 2, 1996 |
| 5365970 |
Gravity flow chemigation system and low level shutoff valve |
Nov. 22, 1994 |
| 5238020 |
Hydraulic valve |
Aug. 24, 1993 |
| 5125433 |
System for electronically controlling the temperature of water delivered to a bath, shower and the like |
Jun. 30, 1992 |
| 5107891 |
Safety device for gas welding |
Apr. 28, 1992 |
| 5014759 |
Vehicle wheel having valve means to prevent misuse |
May. 14, 1991 |
| 4926901 |
Fluid supply line flow control device |
May. 22, 1990 |
| 4830045 |
Breaker valve |
May. 16, 1989 |
| 4817664 |
Gas pressure regulator |
Apr. 4, 1989 |
| 4813492 |
Low pressure shut off device contained within a pneumatic tool |
Mar. 21, 1989 |
| 4807661 |
Fluid control valve |
Feb. 28, 1989 |
| 4721128 |
Safety Shutoff Valve--electromechanical |
Jan. 26, 1988 |
| 4691893 |
Fail safe gate valves and actuators therefor |
Sep. 8, 1987 |
| 4650154 |
Blanking cover for pipe |
Mar. 17, 1987 |
| 4589435 |
Water shutoff valve |
May. 20, 1986 |
| 4197867 |
Relay indicator valve |
Apr. 15, 1980 |
| 4182369 |
Spool valve and pilot interface assembly |
Jan. 8, 1980 |
| 4153072 |
Pilot valve |
May. 8, 1979 |
| 4150925 |
Fast acting check valve |
Apr. 24, 1979 |
| 4145025 |
Control device |
Mar. 20, 1979 |
| 4119117 |
Valve means of a device for removing lubricating oil |
Oct. 10, 1978 |
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