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Class Information
Number: 251/63.6
Name: Valves and valve actuation > Fluid actuated or retarded > Piston type expansible chamber reciprocating valve actuator > Coaxial actuator, seat and valve > Coaxial spring biasing means between valve and actuator
Description: Subject matter in which the movable working member of the expansible chamber device or the control member is biased by spring means concentric with the axis of the control member and positioned between the movable working member and control member, the spring means acting between a fixed member and the working member or control member.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7455279 |
Hydraulic control valve with integrated dual actuators |
Nov. 25, 2008 |
| 7401760 |
Vacuum regulating valve |
Jul. 22, 2008 |
| 7380767 |
Valve |
Jun. 3, 2008 |
| 7340939 |
Emissions sampling valve |
Mar. 11, 2008 |
| 7328881 |
Evacuating valve |
Feb. 12, 2008 |
| 7303176 |
Controller |
Dec. 4, 2007 |
| 7234678 |
Protection system for turbo machine and power generating equipment |
Jun. 26, 2007 |
| 7231934 |
Shut-off actuator with gas generation device |
Jun. 19, 2007 |
| 7185489 |
Particulate trap |
Mar. 6, 2007 |
| 7182278 |
Spray valve |
Feb. 27, 2007 |
| 7168676 |
Two-port valve for vacuum operation |
Jan. 30, 2007 |
| 7163025 |
Vacuum regulating valve |
Jan. 16, 2007 |
| 7155896 |
Combustor drain valve |
Jan. 2, 2007 |
| 7121297 |
Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive |
Oct. 17, 2006 |
| 7070159 |
Vacuum regulating valve |
Jul. 4, 2006 |
| 7040320 |
Valve device for controlled supply of a pressure fluid |
May. 9, 2006 |
| 7014076 |
Syrup delivery system |
Mar. 21, 2006 |
| 7004445 |
Mechanical override for a valve actuator |
Feb. 28, 2006 |
| 6991000 |
Manifold having integrated pressure relief valve |
Jan. 31, 2006 |
| 6986362 |
Pilot operated relief valve |
Jan. 17, 2006 |
| 6974115 |
Electro-hydrostatic actuator |
Dec. 13, 2005 |
| 6964304 |
Technique for maintaining pressure integrity in a submersible system |
Nov. 15, 2005 |
| 6923423 |
Small bore gate valve |
Aug. 2, 2005 |
| 6896236 |
Controlled leakage hydraulic damper |
May. 24, 2005 |
| 6895986 |
Flow control valve that may be used for mold temperature control systems |
May. 24, 2005 |
| 6854705 |
Flow control valve that may be used for mold temperature control systems |
Feb. 15, 2005 |
| 6814338 |
Two-port vacuum valve capable of adjusting valve-opening |
Nov. 9, 2004 |
| 6793194 |
Rotary valve actuator |
Sep. 21, 2004 |
| 6783107 |
Hydraulic actuator with built-in pressure compensator |
Aug. 31, 2004 |
| 6779774 |
Metal diaphragm valve |
Aug. 24, 2004 |
| 6725661 |
Valve device |
Apr. 27, 2004 |
| 6655651 |
Two-port valve |
Dec. 2, 2003 |
| 6644348 |
Purgable multiport valve |
Nov. 11, 2003 |
| 6601603 |
Clean-in-place air-blow valve |
Aug. 5, 2003 |
| 6598849 |
Pressure compensation/control for fail-safe gate valve |
Jul. 29, 2003 |
| 6536740 |
Disconnected piston for a valve actuator |
Mar. 25, 2003 |
| 6494229 |
Pilot-type two-port vacuum valve |
Dec. 17, 2002 |
| 6491059 |
Smooth exhaust valve |
Dec. 10, 2002 |
| 6488258 |
Releasable check valve for very high system pressures |
Dec. 3, 2002 |
| 6478043 |
Opening/closing valve |
Nov. 12, 2002 |
| 6454237 |
Air activated internal valve |
Sep. 24, 2002 |
| 6422531 |
ECP manifold valve inserts |
Jul. 23, 2002 |
| 6416034 |
ECP manifold vent valve insert |
Jul. 9, 2002 |
| 6405535 |
Turbocharger with wastegate actuator |
Jun. 18, 2002 |
| 6305836 |
Force absorbing homogenization valve |
Oct. 23, 2001 |
| 6276492 |
Push rod activated grease nozzle |
Aug. 21, 2001 |
| 6244739 |
Valve members for a homogenization valve |
Jun. 12, 2001 |
| 6244563 |
Automatic two-stage switching valve |
Jun. 12, 2001 |
| 6244562 |
Multistage switching valve, two-stage switching valve, and toggle type two-stage switching valve |
Jun. 12, 2001 |
| 6238080 |
Homogenization valve with outside high pressure volume |
May. 29, 2001 |
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