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Class Information
Number: 251/45
Name: Valves and valve actuation > Fluid actuated or retarded > Pilot or servo type motor > Choked pressure type servo motor > Main valve biased open by line pressure > Differential reaction surface for line pressure > Diaphragm or bellows surface
Description: Subject matter in which the differential line pressure reacting surface is a flexible wall or membrane which is deflected by the applied fluid pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7140590 |
Pinch valve element for plumbing fixture flush valve |
Nov. 28, 2006 |
| 7048003 |
Polyvalve |
May. 23, 2006 |
| 7028704 |
Fill valve |
Apr. 18, 2006 |
| 6978798 |
Gas flow control |
Dec. 27, 2005 |
| 6959904 |
Solenoid valve device of the bistable type, particularly for controlling the supply of water to a washing machine |
Nov. 1, 2005 |
| 6932317 |
Low power DC solenoid valve |
Aug. 23, 2005 |
| 6877714 |
Flow control valve having differently configured labyrinths to select closing speed |
Apr. 12, 2005 |
| 6796515 |
One touch actuated valve |
Sep. 28, 2004 |
| 6748970 |
Pilot operated water conservation valve and actuator |
Jun. 15, 2004 |
| 6691937 |
One touch actuated valve |
Feb. 17, 2004 |
| 6659373 |
One touch actuated valve |
Dec. 9, 2003 |
| 6616119 |
Bypass orifice and filter for diaphragm type flush valve |
Sep. 9, 2003 |
| 6612536 |
Remote shut-off valve |
Sep. 2, 2003 |
| 6427967 |
Valve, unit, assembly and system |
Aug. 6, 2002 |
| 6298872 |
Pilot operated water conservation valve actuator |
Oct. 9, 2001 |
| 6290203 |
Pilot operated valve assembly |
Sep. 18, 2001 |
| 6254057 |
Valve control system |
Jul. 3, 2001 |
| 6123315 |
Apparatus and method for reducing water use |
Sep. 26, 2000 |
| 6105926 |
Diaphragm assembly disc |
Aug. 22, 2000 |
| 6076798 |
Fluid actuating valve |
Jun. 20, 2000 |
| 6015133 |
Fuel vapor managment valve |
Jan. 18, 2000 |
| 6000674 |
Reliable flush valve |
Dec. 14, 1999 |
| 5954080 |
Gated proportional flow control valve with low flow control |
Sep. 21, 1999 |
| 5915665 |
Latching solenoid valve |
Jun. 29, 1999 |
| 5904334 |
Quiet high flow control valve |
May. 18, 1999 |
| 5899434 |
Flow rate control valve |
May. 4, 1999 |
| 5887848 |
Flush valve bypass and filter |
Mar. 30, 1999 |
| 5853018 |
Dampening resonance in a flow regulator |
Dec. 29, 1998 |
| 5758863 |
Valve controlled by fluid |
Jun. 2, 1998 |
| 5738332 |
Flow valve operated by flow transfer means which regulate small flows of control |
Apr. 14, 1998 |
| 5738138 |
Reduced water hammer control valve |
Apr. 14, 1998 |
| 5732929 |
Anti-hammer pilot operated valve with tortuous flow path between inlet and pilot chamber |
Mar. 31, 1998 |
| 5716038 |
Proportional flow control valve |
Feb. 10, 1998 |
| 5655747 |
Solenoid valve for irrigation control units |
Aug. 12, 1997 |
| 5652970 |
Toilet water reservoir water dumping valve for sealing the reservoir's water outlet by hydraulic pressure, and controlling water volume |
Aug. 5, 1997 |
| 5645264 |
Tilted seat diaphragm valve |
Jul. 8, 1997 |
| 5622351 |
Water-supply valve of a washing machine |
Apr. 22, 1997 |
| 5599003 |
Bistable solenoid valve |
Feb. 4, 1997 |
| 5573224 |
Water-supply valve of a washing machine |
Nov. 12, 1996 |
| 5524862 |
Mixer valves with electronic control |
Jun. 11, 1996 |
| 5503362 |
Water-supply valve of a washing machine |
Apr. 2, 1996 |
| 5464064 |
Valve particularly useful in fire extinguishing systems |
Nov. 7, 1995 |
| 5456279 |
Diaphragm-type pilot valve having a self-cleaning control orifice |
Oct. 10, 1995 |
| 5449142 |
Two-way cartridge valve for aggresive media |
Sep. 12, 1995 |
| 5431181 |
Automatic valve assembly |
Jul. 11, 1995 |
| 5363873 |
Anti-clog water valve |
Nov. 15, 1994 |
| 5335694 |
Flush valve flow control refill ring |
Aug. 9, 1994 |
| 5335688 |
Variable pressure regulating valve system |
Aug. 9, 1994 |
| 5302088 |
Water powered sump pump |
Apr. 12, 1994 |
| 5299775 |
Flow modulating control valve assembly |
Apr. 5, 1994 |
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