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Class Information
Number: 137/596.2
Name: Fluid handling > Systems > Supply and exhaust > Biased exhaust valve > Biased closed
Description: Devices in which the exhaust valve is biased to closed position.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8567436 Hydraulic connection assembly with a pressure discharge control, positionable between an onboard hydraulic circuit of an engineering vehicle and a removable hydraulic equipment Oct. 29, 2013
8522818 Booster valve Sep. 3, 2013
8434519 Pressure regulator device, especially of the hydraulic remote-control type May. 7, 2013
8434517 Control valve May. 7, 2013
8397759 Electromagnetic spool valve Mar. 19, 2013
8353313 Three-port pintle valve for control of actuation oil Jan. 15, 2013
8322376 Solenoid valve Dec. 4, 2012
8291934 Proportional valve assembly Oct. 23, 2012
8201401 Passive valve assembly with negative start angle Jun. 19, 2012
8100142 Bleed-type electromagnetic valve Jan. 24, 2012
7866344 Rotary valve Jan. 11, 2011
7735516 Lift axle control module Jun. 15, 2010
7686036 Valve apparatus for movable oxygen cylinder Mar. 30, 2010
7543603 Three-way, two-position in-tube solenoid gas valve assembly Jun. 9, 2009
7484527 Switch valve device Feb. 3, 2009
7308909 High pressure three way valve Dec. 18, 2007
7150291 Fluid attachment for the activation and deactivation of fluid driven dynamic devices Dec. 19, 2006
7131368 Variable regeneration valve of heavy equipment Nov. 7, 2006
7028710 Hydraulic valve system Apr. 18, 2006
6997210 Valve arrangement including release valve Feb. 14, 2006
6994112 Control unit for inflatable devices Feb. 7, 2006
6971725 Dampened vehicle emergency brake valve Dec. 6, 2005
6918902 Irrigation and suction valve and method therefor Jul. 19, 2005
6904938 Locking block Jun. 14, 2005
6868772 Fluid control valve Mar. 22, 2005
6848473 Low leak boom control check valve including an insert Feb. 1, 2005
6840279 Pneumatic switching valve for systems for lifting and lowering the body of vehicles including air suspension Jan. 11, 2005
6805161 Hydraulic valve system Oct. 19, 2004
6779542 Low leak boom control check valve Aug. 24, 2004
6776240 Downhole valve Aug. 17, 2004
6637462 Variable pressure control device Oct. 28, 2003
6581639 Low leak boom control check valve Jun. 24, 2003
6581634 Solenoid control valve with particle gettering magnet Jun. 24, 2003
6578819 Hydraulic valve Jun. 17, 2003
6523453 Hydraulic control valve for agricultural implements Feb. 25, 2003
6499505 Hydraulic valve arrangement Dec. 31, 2002
6477937 Valve arrangement including release valve Nov. 12, 2002
6470912 Dual-spool hydraulic directional valve Oct. 29, 2002
6439264 Valve assembly Aug. 27, 2002
6431049 Manifold for maintaining a latch actuator under pressure and accommodating leaks Aug. 13, 2002
6427721 Hydraulic valve arrangement with locking function Aug. 6, 2002
6405746 Proportional pressure control valve Jun. 18, 2002
6364853 Irrigation and suction valve and method therefor Apr. 2, 2002
6321767 High flow solenoid control valve Nov. 27, 2001
6302145 Valve assembly Oct. 16, 2001
6269840 Valve-in-valve body, vent port and method Aug. 7, 2001
6263927 Venting trans-fill station Jul. 24, 2001
6247498 Hydraulic valve for a camera dolly Jun. 19, 2001
6247494 Control valve device for a hydraulic user Jun. 19, 2001
6223773 Check valve assembly May. 1, 2001

1 2 3 4










 
 
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