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Class Information
Number: 251/63.5
Name: Valves and valve actuation > Fluid actuated or retarded > Piston type expansible chamber reciprocating valve actuator > Coaxial actuator, seat and valve
Description: Subject matter in which the movable control member, the seat or port for such member, the cylinder of the expansible chamber device and the piston relatively movable therein are positioned and aligned along the same axis.










Sub-classes under this class:

Class Number Class Name Patents
251/63.6 Coaxial spring biasing means between valve and actuator 243


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8678342 Air-operated valve Mar. 25, 2014
8667989 Aseptic or sanitary top hat diaphragm valve Mar. 11, 2014
8602383 Suck-back valve Dec. 10, 2013
8528584 Device for driving a double seat valve Sep. 10, 2013
8522824 Aseptic or sanitary diaphragm valve Sep. 3, 2013
8496027 List valve, particularly for process technology Jul. 30, 2013
8485218 Oil pressure regulating valve for generator applications Jul. 16, 2013
8469055 Device for driving a double seat valve capable of seat cleaning Jun. 25, 2013
8469333 Counter-biased valve and actuator assembly Jun. 25, 2013
8469585 In-line multi-chamber mixer Jun. 25, 2013
8459293 Ampoule with integrated hybrid valve Jun. 11, 2013
8444111 Combined valve May. 21, 2013
8434733 Valve for control of high pressure air pressure air pulse May. 7, 2013
8424561 Pressure regulator Apr. 23, 2013
8387944 Compensated valve Mar. 5, 2013
8375981 Pressure control valve Feb. 19, 2013
8366602 Electrically activated valve for implantable fluid handling system Feb. 5, 2013
8328410 In-line multi-chamber mixer Dec. 11, 2012
8312902 Filling head with low Reynolds number Nov. 20, 2012
8297306 Fluid regulator Oct. 30, 2012
8281810 Dry valve for sprinkler system Oct. 9, 2012
8262058 Balanced pilot operated check valve Sep. 11, 2012
8231101 Receiving opening of joint for working fluid and valve with the receiving opening Jul. 31, 2012
8210493 Water hammerless valve Jul. 3, 2012
8177188 Valve manifold May. 15, 2012
8157538 Capacity modulation system for compressor and method Apr. 17, 2012
8074683 Valve system for a coulometric analyte sensing instrument Dec. 13, 2011
8061119 Actuation mechanism for a convertible gas turbine propulsion system Nov. 22, 2011
8028716 Pressure-reducing valve Oct. 4, 2011
8011382 Bi-modal bleed valve assembly for gas turbine engine Sep. 6, 2011
8011639 Poppet type flow control valve Sep. 6, 2011
7992490 Automatic by-pass control system for meat injection machine and method of using same Aug. 9, 2011
7984891 Manufacture of an integrated fluid delivery system for semiconductor processing apparatus Jul. 26, 2011
7971599 Air-operated valve Jul. 5, 2011
7862002 Vacuum valve Jan. 4, 2011
7836694 Air bearing turbo cooling air flow regulating device Nov. 23, 2010
7836915 Staggered cylinders in a valve gate apparatus Nov. 23, 2010
7802771 Fluid control device Sep. 28, 2010
7798467 High vacuum valve Sep. 21, 2010
7775503 Pressure relief valve Aug. 17, 2010
7766302 Variable valve actuator with latches at both ends Aug. 3, 2010
7731152 Reversed actuator with minimal leak potential Jun. 8, 2010
7712484 Paint selector valve May. 11, 2010
7658366 High-pressure bi-directional valve Feb. 9, 2010
7651066 Device for pneumatic control Jan. 26, 2010
7559527 Diffusion bonded fluid flow manifold with partially integrated inter-active component Jul. 14, 2009
7549437 Valve and fluid system having that valve Jun. 23, 2009
7509972 Pneumatic valve with lockout Mar. 31, 2009
7500649 Vacuum valve drive Mar. 10, 2009
7494107 Gate valve for plus-atmospheric pressure semiconductor process vessels Feb. 24, 2009

1 2 3 4 5 6 7










 
 
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