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| Number | Title | Issue Date |
| 7287551 | Gas control valve The present invention provides gas control valve including a valve body having a gas inlet, a gas outlet, and a gas passage between the inlet and outlet, and including a valve control element for controlling the flow of gas between the inlet and the outlet. The valv... | 10/30/2007 |
| 7213653 | Deep set safety valve Apparatus and methods are provided for actuation of downhole tools. In one example, a deep set safety valve uses a magnetic coupling which permits a portion of the safety valve at control line pressure to be isolated from tubing string internal pressure, without req... | 05/08/2007 |
| 7055607 | Seal assembly for a safety valve Methods and apparatus for sealing a safety valve within a tubular that the safety valve is designed to be landed and set in are disclosed. The valve includes a seal assembly having a seal on the valve that is acted on by a first piston disposed on a first side of th... | 06/06/2006 |
| 7048005 | Throttle valve device for a pneumatic power tool A throttle valve device for a pneumatic power tool comprises a casing (10) with an air inlet passage (11), an air outlet passage (12), a valve chamber (13) with a main valve seat (14) and a main valve element (15), and a man... | 05/23/2006 |
| 6920898 | High-pressure valve A high-pressure valve comprises an intake channel and two outlet channels. Further, an actuator is provided for opening and closing the outlet channels. According to the invention, the actuator is provided with a connection channel. The connection channel makes it p... | 07/26/2005 |
| 6637477 | Filler neck for the fuel tank of a motor vehicle A filler neck for the fuel tank of a motor vehicle. The inventive filler neck comprises a housing (12, 14) which has an outer closure (30) that can pivot between a closed and opened position and which has a second closure element (50) that is accommodated... | 10/28/2003 |
| 6612338 | Fuel tank pressure control valve A valve structure that comprises a housing and a valve. The housing includes a first fluid communication passage between a first port and a second port. The valve is movable with respect to the housing between a first configuration, a second configuration... | 09/02/2003 |
| 6237693 | Failsafe safety valve and method A subsurface well safety valve having a flow tube telescopically movable in a housing for controlling the movement of a valve closure member. A piston and cylinder assembly actuates the flow tube and is in communication with hydraulic control fluid from t... | 05/29/2001 |
| 6230739 | Fuel refilling assembly A fuel refilling assembly for receiving a filling nozzle to open and close a filler neck of a fuel tank. The refilling assembly has a housing attached to the filler neck to receive the filling nozzle. A valve body is mounted to the housing and moves betwe... | 05/15/2001 |
| 6227236 | Widely variable conductance valve Flow of processing gas is controlled by one valve from the atmospheric pressure to a substantial vacuum pressure. A valve body is disposed in a valve chamber having an inlet to be connected with a reaction chamber and an outlet to be connected with an eva... | 05/08/2001 |
| 6131612 | Valve for a superheated-steam conversion plant The invention relates to a valve, more particularly for a superheated steam conversion station, having an inlet and an outlet which can be closed by a closure member extending into the inlet or outlet, and a draw-off via which a component flow of the stea... | 10/17/2000 |
| 5975212 | Surface controlled subsurface safety valve downstop seal In a broad aspect, the invention relates to an improved downstop seal for use with a rod-piston actuator of a surface controlled subsurface safety valve, wherein the rod-piston actuator has a beveled shoulder formed thereon. The improved downstop seal has... | 11/02/1999 |
| 5894856 | Seismically triggered valve A seismically triggered valve is designed to shut off gas supply during an earthquake. A valve member is pivoted within a valve body, the valve member being mechanically movable to the open position. A magnet is fixed to the valve member, and a ferromagne... | 04/20/1999 |
| 5890698 | Valve having pressure equalizing conduit Pressure can build up on one side of a valve bore sealing mechanism when it is closed. This can make the mechanism difficult to open. A bore network is provided which extends through the valve housing side wall from the inlet end of the valve bore to its ... | 04/06/1999 |
| 5832950 | Fuel interruption means of fuel tank In a fuel interruption device for a fuel tank, a main valve is prevented from opening as a result of the action of an auxiliary valve during closure of the main valve; and more specifically, an auxiliary valve which is caused to move up and down by a floa... | 11/10/1998 |
| 5549138 | Changeover valve system A changeover valve system is provided that is adapted to be secured at one end to a riser from a pressurized piping system and at its opposite end to at least two pressure relieving devices. The changeover valve system includes a body and at least two elb... | 08/27/1996 |
| 5518024 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 05/21/1996 |
| 5390703 | Valve for flowing liquid-phase medium A valve for a pipe system wherein liquid circulates is intended to be controlled dependent on the liquid temperature within the system by means of a thermostat adapted to actuate an electro magnet which, on its part, dependent on whether it is current-car... | 02/21/1995 |
| 5337788 | Pneumatic valve with slow start and quick exhaust A pneumatic valve that has slow start and quick exhaust features and includes a housing structure defining a main flow passage between a supply inlet and a system outlet and a by-pass flow passage around a main valve in the main flow passage, a control va... | 08/16/1994 |
| 5174335 | Bidirectional vacuum valve To evacuate a vacuum chamber without stirring up particles in the chamber or associated piping, a pneumatically-actuated vacuum valve is used between the chamber and the vacuum pump. The valve controls evacuation in two stages: in the first stage, the val... | 12/29/1992 |
| 5070707 | Shockless system and hot gas valve for refrigeration and air conditioning A refrigeration system utilizing hot gas for defrost and a hot gas defrost valve with specific opening characteristics for rapidly reducing the pressure gradient across the valve without producing hydraulic shock. When defrost is called for by the system,... | 12/10/1991 |
| 5066186 | Dust discharging apparatus for a furnace A dust discharging apparatus suitable for use in a dust collector, which comprises series-connected upper and lower dust shoot chambers, each having a swingable discharging valve device to close and open its ceiling opening. In order to prevent dust coati... | 11/19/1991 |
| 4974624 | Gas shut-off device A gas shut-off device comprising a housing having a gas inflow hole and a gas outflow hole, the housing including therein a first shut-off valve with permanent magnets for closing and opening the gas flow passage, a partition having an opening formed ther... | 12/04/1990 |
| 4903802 | Slide type exhaust brake A slide type exhaust brake having an exhaust pressure regulating passage provided in that portion of the wall of a housing which defines the bottom of a guide passage for a reciprocating valve member such that the exhaust pressure regulating passage exten... | 02/27/1990 |
| 4796667 | Brake pressure control valve The invention relates to a brake pressure control valve which contains a brake pressure build-up valve. The brake pressure build-up valve comprises a pressure compensated seat valve. A second valve member, a rod between the two valve members and a tubular... | 01/10/1989 |
| 4749036 | Dual bore well treating tool A dual bore well treating tool having a pressure operated valve therein that is useful in conjunction with a dual bore packer and with a dual bore on and off or connection tool. One of the bores through the on/off tool, the treating tool and the packer is... | 06/07/1988 |
| 4615354 | Valve system timing device for pipes carrying liquid under pressure A valve system timing device for pipes carrying fluid under pressure operable to control a fluid, so as to define an upstream and a downstream fluid pipe includes a first or by-pass shutter provided with a modulating flowrate limiting device for slowly pr... | 10/07/1986 |
| 4579177 | Subsurface solenoid latched safety valve A subsurface solenoid well safety valve which is locked in the open position, after being opened mechanically, for preventing the valve from closing. A valve closure member is controlled by a tubular member which is mechanically moved downwardly to open t... | 04/01/1986 |
| 4575045 | Rotary cock with generally spherical valve member A ball valve has a movable upstream valve seat with a metal lip engageable with the valve ball under pressure generated by a bellows section or metal membrane connected between the movable valve seat and the housing. The force of fluid pressure against th... | 03/11/1986 |
| 4452311 | Equalizing means for well tools Pressure equalizing means for well tools having a tubular housing and an operator tube movable longitudinally therewithin, there being provided a valved bypass passage in the housing and a shoulder on the operator tube for engaging and opening the valve o... | 06/05/1984 |
| 4415037 | Ball valve loading apparatus A ball valve assembly is provided for elimination of the tearing of the annular elastomeric seal which normally engages the periphery of such ball valve due to the movement of the valve with excessive loading imposed on the elastomeric seal. A spring pres... | 11/15/1983 |
| 4407329 | Magnetically operated fail-safe cutoff valve with pressure equalizing means A magnetically operated fail-safe cutoff valve of general application and particularly suitable for down hole fluid well applications is provided having a simple highly reliable valve for equalizing the pressure across the main cutoff valve while closed t... | 10/04/1983 |
| 4368871 | Lubricator valve apparatus A lubricator valve apparatus adapted for use when running wireline tools into an offshore well during a production test of the well. The valve includes a valve body having a central flow passage and a ball valve element for opening and closing the passage... | 01/18/1983 |
| 4340088 | Pressure balanced safety valve for wells and flow lines A safety valve for the production tubing of wells and/or fluid flow lines includes a valve element having both linear and rotary components of movement within a valve body and is actuated by a lost-motion rack and pinion gear actuating mechanism. The clam... | 07/20/1982 |
| 4325434 | Tubing shut off valve A subsea test valve system for well completed at the floor of the sea includes a safety valve and disconnect mechanism mounted in a blowout preventer at the bottom of the sea and having hydraulic fluid pressure operated means for opening the safety valve ... | 04/20/1982 |
| 4293038 | Ball valve assembly An improved mounting and sealing assembly is provided for a rotating ball valve required to open under increased differential pressures and close against high flow rates. The valve assembly includes a trunnion-mounted ball and two pressure biased sealing ... | 10/06/1981 |
| 4244398 | Check valve assembly having valve opening prior to passing flow and flow shut off prior to valve closing A check valve assembly which when opening has a valve closure which is lifted from its seat before fluid flows past the unseated closure, and which when closing terminates flow in advance of the closure reengaging its seat.... | 01/13/1981 |
| 4228988 | Valve A valve including annular valve seats, made of a resilient material such as rubber, fitted in respective valve seat retainers provided in the peripheral portions of fluid passages in the valve body. A gate is slidingly moved to open or close the valve, wi... | 10/21/1980 |
| 4197879 | Lubricator valve apparatus A lubricator valve apparatus adapted for use when running wireline tools into an offshore well during a production test of the well. The valve includes a valve body having a central flow passage and a ball valve element for opening and closing the passage... | 04/15/1980 |
| 4177833 | Valves having a pressure equalizer across dual face seals A valve has upstream and downstream seat assemblies each having a pair of spaced annular face seals in concentric relation to form inner and outer face seals. A movable valve member (26, FIG. 2; 88, FIG. 8) has a main bore therethrough and is mounted in a... | 12/11/1979 |
