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Class Information
Number: 251/303
Name: Valves and valve actuation > Pivoted valves > Biased
Description: Devices in which the valve has one position which it will maintain under the influence of a constant force which comprises a biasing means, and force must be applied to the valve in order to have it take a different position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7600534 |
Valve closing device |
Oct. 13, 2009 |
| 7575220 |
Curved slit valve door |
Aug. 18, 2009 |
| 7497414 |
Curved slit valve door with flexible coupling |
Mar. 3, 2009 |
| 7451854 |
Exhaust flow rate control valve |
Nov. 18, 2008 |
| 7296595 |
Adjustable flow rate valve |
Nov. 20, 2007 |
| 7121527 |
Intercept valve for spray guns for water cleaner apparatus |
Oct. 17, 2006 |
| 7014165 |
Flow control valve and flow control valve apparatus using the same |
Mar. 21, 2006 |
| 6968852 |
Shock actuated responsive mechanism with improved dual safety means to prevent over-rotation of the valve reset mechanism and to provide easy access to the reset knob |
Nov. 29, 2005 |
| 6945276 |
Valve with unilaterally constrained piezoelectric bending element as actuating device |
Sep. 20, 2005 |
| 6926025 |
Shock actuated responsive mechanism with improved leveraged valve closing activation means for vertical fluid valve assemblies |
Aug. 9, 2005 |
| 6866245 |
Valve closing device |
Mar. 15, 2005 |
| 6789560 |
Shock actuated responsive mechanism with improved safety means to prevent over-rotation of the valve reset mechanism |
Sep. 14, 2004 |
| 6705593 |
Valve closing device |
Mar. 16, 2004 |
| 6588727 |
Electric dispensing valve including improved paddle arm |
Jul. 8, 2003 |
| 6533243 |
Self-closing valve |
Mar. 18, 2003 |
| 6527004 |
Shock actuated responsive mechanism for vertical fluid valve assemblies |
Mar. 4, 2003 |
| 6502599 |
Shock actuated responsive mechanism for vertical fluid valve assemblies |
Jan. 7, 2003 |
| 6453936 |
Valve system for the pre-engagement unit of a braking pressure modulator |
Sep. 24, 2002 |
| 6425412 |
Dual spring exhaust valve linkage assembly |
Jul. 30, 2002 |
| 6394122 |
Shock actuated sensor for fluid valve |
May. 28, 2002 |
| 6328062 |
Torsion spring connections for downhole flapper |
Dec. 11, 2001 |
| 6314983 |
Flow controller for a pool cleaner |
Nov. 13, 2001 |
| 6188029 |
Weighing apparatus having improved hopper detachability |
Feb. 13, 2001 |
| 6123528 |
Reed discharge valve for scroll compressors |
Sep. 26, 2000 |
| 6003605 |
Balanced line tubing retrievable safety valve |
Dec. 21, 1999 |
| 5950988 |
Concrete boom discharge valve apparatus |
Sep. 14, 1999 |
| 5950987 |
In-line lever actuated valve |
Sep. 14, 1999 |
| 5937891 |
Automatic HVAC housing valve door with tolerance compensating return mechanism |
Aug. 17, 1999 |
| 5913505 |
Movement-transmission apparatus using a pivoting lever and valve incorporating said apparatus |
Jun. 22, 1999 |
| 5901741 |
Flow controller, parts of flow controller, and related method |
May. 11, 1999 |
| 5876014 |
Motor damper |
Mar. 2, 1999 |
| 5850850 |
Flow controller, parts of flow controller, and related method |
Dec. 22, 1998 |
| 5822984 |
Alternate valve assembly for smoke re-combustion device |
Oct. 20, 1998 |
| 5810327 |
Shutoff valve with spring-loaded valve disk |
Sep. 22, 1998 |
| 5620015 |
Flush valve |
Apr. 15, 1997 |
| 5556073 |
Linear control valve |
Sep. 17, 1996 |
| 5398314 |
Apparatus for creating operation data concerning operating device |
Mar. 14, 1995 |
| 5397314 |
Surgical cannula with ball valve |
Mar. 14, 1995 |
| 5376044 |
Ventilator |
Dec. 27, 1994 |
| 5361596 |
Refrigerator system, a control device therefor and methods of making the same |
Nov. 8, 1994 |
| 5355673 |
Exhaust valve |
Oct. 18, 1994 |
| 5351933 |
Quick-acting gate valve |
Oct. 4, 1994 |
| 5323859 |
Streamlined flapper valve |
Jun. 28, 1994 |
| 5324045 |
Blow out game |
Jun. 28, 1994 |
| 5310005 |
Flapper valve assembly with floating hinge |
May. 10, 1994 |
| 5303897 |
Arrangement in valve dampers |
Apr. 19, 1994 |
| 5263847 |
Subsurface tubing safety valve |
Nov. 23, 1993 |
| 5247720 |
Valving structure for air passageways of floor nozzle and auxiliary inlet of a vacuum cleaner |
Sep. 28, 1993 |
| 5224929 |
Irrigation/aspiration cannula and valve assembly |
Jul. 6, 1993 |
| 5199462 |
Valve having rocker valve member and isolation diaphragm |
Apr. 6, 1993 |
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