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Class Information
Number: 251/83
Name: Valves and valve actuation > Lost motion between actuator and valve > Check valve with external opening and closing means > Spring
Description: Devices wherein the movement of the valve is modified by a spring.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7410145 |
Valve for speed filling a dunnage bag |
Aug. 12, 2008 |
| 7347405 |
Inlet valve for pneumatic tool |
Mar. 25, 2008 |
| 7290561 |
Pulsation causing valve for a plural piston pump |
Nov. 6, 2007 |
| 7278443 |
Pulsation causing valve for a plural piston pump |
Oct. 9, 2007 |
| 7249748 |
Electric motor actuated stop and self-closing check valve |
Jul. 31, 2007 |
| 7219850 |
Mechanical valve assembly |
May. 22, 2007 |
| 7134638 |
Stop valve for gas tank |
Nov. 14, 2006 |
| 7128089 |
Flow control providing stable fluid flow |
Oct. 31, 2006 |
| 7121299 |
Regulator valve with flow indicator for a hot-water heating system |
Oct. 17, 2006 |
| 7040339 |
Suction inlet valve for fire truck pumpers |
May. 9, 2006 |
| 6929238 |
Electric motor actuated stop and self-closing check valve |
Aug. 16, 2005 |
| 6899312 |
Pressure relief valve for flowing media |
May. 31, 2005 |
| 6883776 |
Slit valve for a semiconductor processing system |
Apr. 26, 2005 |
| 6871835 |
Flow control valve with automatic shutoff capability |
Mar. 29, 2005 |
| 6725661 |
Valve device |
Apr. 27, 2004 |
| 6622749 |
Air faucet |
Sep. 23, 2003 |
| 6619325 |
Hydraulic hybrid accumulator shut-off valve |
Sep. 16, 2003 |
| 6607007 |
Cylinder valve and bayonet check-filter with excess-flow protection feature |
Aug. 19, 2003 |
| 6341622 |
Pressure relief valve and arrangement for fire suppression water sprinkler system |
Jan. 29, 2002 |
| 6308730 |
Gas stream monitor |
Oct. 30, 2001 |
| 6309033 |
Switchable orifice solenoid with plate valve for an anti-lock brake system |
Oct. 30, 2001 |
| 6244294 |
Radiator pressure release valve for a temperature control system |
Jun. 12, 2001 |
| 6126409 |
Integral housing unit having a lockdown check valve and a pressure relief valve for a submersible pump and method of assembling the same |
Oct. 3, 2000 |
| 6077249 |
Tubular shaft instrument |
Jun. 20, 2000 |
| 5918623 |
Starting valve |
Jul. 6, 1999 |
| 5819791 |
Check valve including means to permit selective back flow |
Oct. 13, 1998 |
| 5758681 |
Fluid cylinder pressure check valve device |
Jun. 2, 1998 |
| 5735504 |
Variable overpressure relief valve |
Apr. 7, 1998 |
| 5725289 |
Electromagnetically actuated valve, in particular for slip-controlled hydraulic brake systems in motor vehicles |
Mar. 10, 1998 |
| 5662139 |
Pressure relief valve with lockout position |
Sep. 2, 1997 |
| 5586744 |
Boost device bypass valve |
Dec. 24, 1996 |
| 5568910 |
Anesthesia machine |
Oct. 29, 1996 |
| 5544688 |
Two stage kneeling valve |
Aug. 13, 1996 |
| 5511575 |
Apparatus for permitting uninterrupted relief of cargo tank compartment internal pressure and preventing leakage of lading from the cargo tank during dynamic pressure surges |
Apr. 30, 1996 |
| 5439028 |
Modular valve for a building standpipe |
Aug. 8, 1995 |
| 5411375 |
Intake control valve |
May. 2, 1995 |
| 5370356 |
One-way fluid flow non-return valve |
Dec. 6, 1994 |
| 5318066 |
Solenoid valve for hydraulic brake units with slip control |
Jun. 7, 1994 |
| 5295503 |
Modular valve for a building standpipe |
Mar. 22, 1994 |
| 5261471 |
Pressure relief valve |
Nov. 16, 1993 |
| 5215119 |
Safety closure for steam pressure coffee machine water reservoirs |
Jun. 1, 1993 |
| 5178185 |
Suction inlet valve for fire truck pumpers |
Jan. 12, 1993 |
| 5123445 |
Water tap |
Jun. 23, 1992 |
| 5067518 |
Pressure feed paint cup valve |
Nov. 26, 1991 |
| 5007614 |
Pressure responsive two-way shut-off valve |
Apr. 16, 1991 |
| 4967845 |
Lock open mechanism for downhole safety valve |
Nov. 6, 1990 |
| 4941504 |
Manual fluid-control valve with limited closing pressure |
Jul. 17, 1990 |
| 4911403 |
Pressure responsive two-way shut-off valve |
Mar. 27, 1990 |
| 4580596 |
Check valve with dual locking mechanism |
Apr. 8, 1986 |
| 4561828 |
Pump for forwarding liquids |
Dec. 31, 1985 |
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