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Class Information
Number: 251/12
Name: Valves and valve actuation > Fluid actuated or retarded
Description: Subject matter in which the opening or closing movement of the valve is produced or modified by the reactive force of a fluid acting against a portion of the actuating means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7610881 |
Apparatus for an internal combustion engine |
Nov. 3, 2009 |
| 7509972 |
Pneumatic valve with lockout |
Mar. 31, 2009 |
| 7506658 |
Liquid flow control devices |
Mar. 24, 2009 |
| 7472433 |
Method and apparatus for determining when hands are under a faucet for lavatory applications |
Jan. 6, 2009 |
| 7409937 |
Hydraulic control system for internal combustion engine |
Aug. 12, 2008 |
| 7390310 |
Shunt valve locking mechanism |
Jun. 24, 2008 |
| 7228826 |
Internal combustion engine valve seating velocity control |
Jun. 12, 2007 |
| 7204211 |
Arrangement of an internal combustion engine poppet valve and an actuator therefor |
Apr. 17, 2007 |
| 7194991 |
Variable valve actuator |
Mar. 27, 2007 |
| 7178489 |
Variable valve system of internal combustion engine and hydraulic actuator |
Feb. 20, 2007 |
| 7162982 |
Hydraulic valve actuator for reciprocating engine |
Jan. 16, 2007 |
| 7156058 |
Variable valve actuator |
Jan. 2, 2007 |
| 7134408 |
Device for the control of gas exchange valves |
Nov. 14, 2006 |
| 7131628 |
Vented MEMS structures and methods |
Nov. 7, 2006 |
| 7007642 |
Hydraulic valve actuator for actuating a gas-exchange valve |
Mar. 7, 2006 |
| 6917858 |
Fluid regulation |
Jul. 12, 2005 |
| 6892683 |
Electrohydraulic valve controller |
May. 17, 2005 |
| 6827050 |
Fluid control valve actuating system |
Dec. 7, 2004 |
| 6763829 |
Reliability-enhanced apparatus operation for re-breathing and methods of effecting same |
Jul. 20, 2004 |
| 6722327 |
Device and method for changing the relative rotational angle of a camshaft |
Apr. 20, 2004 |
| 6684834 |
DEVICE TO CHANGE THE TIMING OF GAS EXCHANGE VALVES IN AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR A ROTATING PISTON POSITIONING DEVICE TO ADJUST THE ANGLE THAT A CAMSHAFT IS ROTATED RELATIVE |
Feb. 3, 2004 |
| 6637390 |
Apparatus and method for measuring cam phaser locking pin position |
Oct. 28, 2003 |
| 6619248 |
Device for altering the control timing of gas exchange valves of an internal combustion engine, especially an apparatus for hydraulic rotational angle adjustment of a camshaft relative to a cr |
Sep. 16, 2003 |
| 6615778 |
Apparatus and method for diagnosing variable valve timing apparatus |
Sep. 9, 2003 |
| 6546950 |
Lacquer bullet gun Gas entry valve |
Apr. 15, 2003 |
| 6516763 |
Method of controlling a device that varies the valve control times an internal combustion engine, especially of a camshaft adjusting device with hydraulically releaseable start lock |
Feb. 11, 2003 |
| 6513468 |
Valve timing control system for internal combustion engine |
Feb. 4, 2003 |
| 6510825 |
Internal combustion engine for motor vehicles and the like |
Jan. 28, 2003 |
| 6439233 |
Tracheal stoma valve |
Aug. 27, 2002 |
| 6409967 |
Valve obturator |
Jun. 25, 2002 |
| 6398183 |
Automatic shut-off device for a valve for compressed or liquefied gases |
Jun. 4, 2002 |
| 6371437 |
Thermally operated valve for automatically modulating the flow of fluids and methods and tool for making the same |
Apr. 16, 2002 |
| 6131878 |
Pneumatic linear drive for cryogenic control valves |
Oct. 17, 2000 |
| 5685335 |
Lamp processing machine |
Nov. 11, 1997 |
| 5337797 |
Hydrocarbon dispenser nozzle |
Aug. 16, 1994 |
| 4795129 |
Normally closed fluid switching logic element |
Jan. 3, 1989 |
| 4650154 |
Blanking cover for pipe |
Mar. 17, 1987 |
| 4625941 |
Gas lift valve |
Dec. 2, 1986 |
| 4606384 |
Gas supply device including a plurality of gas flasks inserted in a pressurized gas container |
Aug. 19, 1986 |
| 4589528 |
Double-tube vibration damper |
May. 20, 1986 |
| 4562724 |
Gas sampling valve |
Jan. 7, 1986 |
| 4404988 |
Pressure seated closure for containment drain |
Sep. 20, 1983 |
| 3990464 |
Heat-responsive duct closing method and apparatus |
Nov. 9, 1976 |
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