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| Number | Title | Issue Date |
| 8152133 | Pneumatic pressure regulating valve A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in t... | 04/10/2012 |
| 8152132 | Pneumatic actuator having diaphragm retention ring A pneumatic valve actuator for moving the valve stem of a control valve comprises an upper casing and a lower casing each having flanges, a diaphragm plate operatively coupled to the valve stem, a spring arranged to bias the diaphragm plate in a first direction, a d... | 04/10/2012 |
| 8061681 | Apparatus and methods to couple actuator stems and rod end bearings Methods and apparatus to couple actuator stems and rod end bearings are described. An example apparatus includes a bearing having a body and a portion extending from the body in which the portion includes an internally threaded bore. An actuator stem has a first end... | 11/22/2011 |
| 7950621 | Pneumatic pressure regulation valve A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in t... | 05/31/2011 |
| 7878479 | Adjustment valve An adjustment valve includes a first diaphragm integrally formed from an attachment section engaged with and fixed to the bottom of a rod, a joining section to which a valve body is fixed, a thin film section radially extending from a shoulder section, a thick wall ... | 02/01/2011 |
| 7232106 | Tilted and stepped diaphragm for control valves A diaphragm operated valve having the diaphragm attached at its lower end to a valve closure plug, and movable therewith, and attached at its upper end to a portion of valve body that forms the pressure cavity. The diaphragm has a stepped portion between its upper a... | 06/19/2007 |
| 7219691 | Control valve positioner mounting system A positioner for a control valve assembly is disclosed wherein the positioner is mounted internally to thus protect the positioner from damage stemming from environmental, impact, or other outside influences. Accordingly, not only can the position of the valve be ac... | 05/22/2007 |
| 7201361 | Gate valve having reduced friction Valve having a valve housing, a valve member slidable in the valve housing between open and closed positions, and a friction reducer to reduce friction between the valve member and the valve housing. The friction reducer comprises at least one guide shoe made of low... | 04/10/2007 |
| 7163449 | Hand held abrasive blaster A hand held abrasive blaster includes a tubular wand housing and an abrasives conduit which extends into the wand housing. The abrasives conduit includes a fixed portion at the rearward end and a rotatable portion at the forward end. A motor rotates the rotatable po... | 01/16/2007 |
| 7073769 | Overpressure generator and valve The invention relates to a device for at least intermittently generating an overpressure in a system S in relation to an ambient pressure U, with a pump P that has a pressure side 20 and an intake side 10, where during the generation of an overpressure... | 07/11/2006 |
| 7059578 | Diaphragm and hydraulically-operated valve using same The present invention relates to fluid control valves. The invention provides an improved diaphragm useful for a large hydraulically-operated valve or pressure regulating valve of the type used in pipelines to transport water, oil, gas, acids, alkalis and other flui... | 06/13/2006 |
| 7044432 | Fluid channel valve for use with a disposable cartridge in extracorporeal circulations A valve for the closure of fluid channels, in particular for use in disposable cartridges for extracorporeal circulations, having a valve body with a pressure channel, and a sealing cap, which can cooperate with the valve body in such a way that it closes off the en... | 05/16/2006 |
| 7032876 | Fluid valve A valve for controlling fluid flow. The valve include a support element providing a flow path, at least a portion of the flow path extending along an axis of flow through the valve. A flexible element is compressible against the support element to interrupt the flow... | 04/25/2006 |
| 7028986 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open and close t... | 04/18/2006 |
| 6932315 | Manual opening apparatus for a normally-closed valve An apparatus for manually opening a normally-closed valve includes a value and a hand-operated valve opening jig. The valve includes a working rod for operating a valve element which is moved to close and open a conduit; a cylindrical holder fixed to the working rod... | 08/23/2005 |
| 6886580 | Frost proof valve The present invention relates to a valve assembly for use in below freezing conditions which includes a valve housing with a connection to a supply of fluid, and a primary chamber, and a secondary chamber, and a flexible diaphragm, and an equalisation port, and a sa... | 05/03/2005 |
| 6854704 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open and close t... | 02/15/2005 |
| 6776388 | Valve actuator with internal amplifying means A Valve actuator with integral amplifying means having multiple linkage arrangements able to amplify the force generated by an air signal acting on a flexible diaphragm, and to transmit this force amplified on to a lower compression spring and ultimately on to a sli... | 08/17/2004 |
| 6752171 | Control-valve drive with sensor unit for detecting the position of the valve A drive for a control valve has a drive force unit, a yoke for connecting to a valve in a fixed manner, a drive spindle for transmitting the movement of the drive force unit to the valve and a sensor unit for detecting the position of the valve. The sensor unit incl... | 06/22/2004 |
| 6511040 | Pneumatic actuator Disclosed is a pneumatic actuator which includes a housing comprised of two halves and having at least two passages defined therethrough, including a "loop" groove defined in an inner peripheral wall of the housing into which a seal member is inserted. A ... | 01/28/2003 |
| 6457696 | Pilot operated flow regulating valve A pilot operated flow regulating valve has pressure governing chamber receiving a moveable pressure receiving member for common movements together with a main valve member of the pilot operated flow regulating valve in relation to a fixed valve seat and b... | 10/01/2002 |
| 6450477 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open ... | 09/17/2002 |
| 6427967 | Valve, unit, assembly and system The invention relates to a valve incorporating a flexible diaphragm, and improves upon known diaphragm valves to permit the use of a diaphragm-controlled valve in systems for which such valves were not previously suitable or utilized. There is provided a ... | 08/06/2002 |
| 6425145 | Push button for metered flow By depressing a push button (13), a user deforms a flexible diaphragm (30) and thereby causes an incompressible fluid to flow from a first actuation-chamber segment (42) through openings (48) in a divider wall (46) and into a second chamber segment (44). ... | 07/30/2002 |
| 6394418 | Bellows actuator for pressure and flow control An actuator for controlling the pressure of fluid, such as water or steam, from a fluid source to a flow controlling orifice. The actuator can be used to apply such fluids to the web of a papermaking machine. The actuator comprises a housing having a firs... | 05/28/2002 |
| 6250605 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open ... | 06/26/2001 |
| 6155048 | Actuator for a turbocharger An actuator for a turbocharger includes a hollow body member having a open top. A flexible elastic diaphragm extends across and is sealingly secured to the open top of the hollow body member which sealingly secures it thereagainst. A cap covers the open t... | 12/05/2000 |
| 6105929 | Control valve for gas supply to a nebulizer A pilot valve permits the delivery of relatively high pressure gas on the order of 30-50 psi directly to the valve. A poppet valve is positioned in the outlet gas delivery tube of the valve housing and has a valve stem which is spring loaded to maintain t... | 08/22/2000 |
| 6089532 | Valve for use with agricultural sprayers The present disclosure relates to a valve including a valve body defining an inlet port and an outlet port. The valve also includes a first diaphragm arranged and configured for opening and closing a fluid flow path between the inlet and outlet ports. The... | 07/18/2000 |
| 6089531 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open ... | 07/18/2000 |
| 6015134 | Pneumatic actuator assembly An actuator used to close and open a shut-in valve of a flowline. An indicator rod is threadedly connected to a connector which, in turn, is threadedly connected to the valve stem of the shut-in valve. A compression spring extends between a diaphragm plat... | 01/18/2000 |
| 5974808 | Cooling apparatus employing a pressure actuated Joule-Thomson cryostat flow controller A pressure activated flow controller for use with a Joule-Thomson valve having a diaphragm actuator that is located outside a dewar, and which is not cooled. The diaphragm actuator limits flow based on gas pressure supplied to the dewar from a gas supply,... | 11/02/1999 |
| 5915410 | Pneumatically operated positive shutoff throttle valve Pneumatically operated throttle valve which provides both positive shutoff and precise flow control. The valve has a seat surrounding an orifice and a poppet movable between open and closed positions relative to the seat for controlling communication thou... | 06/29/1999 |
| 5833210 | Brake and clutch control system A control system for a press having a clutch and a brake includes a clutch control valve and a brake control valve. The clutch control valve operates the clutch by supplying pressurized air to the clutch. The brake control valve operates the brake by supp... | 11/10/1998 |
| 5829473 | Multi purpose valve A hydraulic control valve comprising a housing fitted with an inlet port and an outlet port, a sealing port intermediate the inlet port and the outlet port, dividing the housing into an inlet chamber and an outlet chamber with a diaphragm sealingly dividi... | 11/03/1998 |
| 5769387 | Flow valves operated by flow transfer means which regulate small flows of control A flow valve operated by a flow transfer controller which regulates a small flow of control in order to produce a pressure differential between the sides of a sealing wall of a piston able to axially move between an open position far from the valve seat a... | 06/23/1998 |
| 5762315 | Valve actuator with pliable pressure conversion device An actuator for fluid control valves with a reversible power module having a stationary inner member and a coaxially aligned movable outer member coupled to the valve flow control element and slidably movable on the inner member. A chamber formed between ... | 06/09/1998 |
| 5699664 | Shut-off valve unit for a circuit for injecting air in the exhaust system of an internal combustion engine A shut-off valve unit for a circuit for injecting air into an exhaust system of an internal combustion engine has a casing (9, 29) with a first chamber (10), a second chamber (24) and a third chamber (27). The valve rod (18) forms a passage (43) for commu... | 12/23/1997 |
| 5524862 | Mixer valves with electronic control The present invention pertains to a mixer valve with electronic control, which incorporates a group of valves (27) arranged in a housing (26) provided in the valve body axially to the coupling (22) which defines the water outlet duct towards the supply mo... | 06/11/1996 |
| 5516079 | Small flow control valve with tight shutoff capability Small flow control valve with tight shutoff capability having a conventional valve housing with inlet and outlet ports and a one piece internal guide and seat ring combination, further having a plug with a lower throttling profile engaged within the seat ... | 05/14/1996 |
