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| Number | Title | Issue Date |
| 8177189 | Fire protection control valve with rotating plug A differential dry pipe control valve for fire protection sprinkler systems includes an eccentric plug that rotates and separates supply water and system air pressure and uses an integral actuator that maintains the seal of the eccentric plug with a smaller ratio of... | 05/15/2012 |
| 6899122 | Safety shutoff apparatus and method Safety shutoff apparatus can close a valve using a pressure operable device coupled to and acting upon the valve. The proximal end of a pressure line is coupled to the pressure operable device for applying fluid pressure thereto in order to operate the pressure oper... | 05/31/2005 |
| 6766820 | Field adjustable pilot guard An improved pilot guard for controlling the flow of gaseous fuel to both a pilot burner and a main burner, the pilot valve comprising a housing having an inlet port, a pilot port and a main burner port; a bore extending through the housing between the pilot port and... | 07/27/2004 |
| 6543471 | Water heater fail safe apparatus An apparatus for automatically shutting off a water supply to a leaking water heater includes a water-collecting tray adapted to be positioned beneath a water heater, and a float mechanism removably attachable to the tray. The float mechanism has a float ... | 04/08/2003 |
| 6460564 | Automatic-locking shut-off valve for liquid suction systems A rotary-plug shut-off valve (10) of the type having a valve chamber (20) with multiple inlets includes: an actuator chamber (26); a base member (36) forming (a) an end of the actuator chamber (26) and (b) a guide (44); a vacuum-reactive member (48) movab... | 10/08/2002 |
| 6311714 | Seismic detecting shut-down valve device A fluid path opening/closing valve comprises a plate-like valve plug and a rack which is fixed to a piston of an emergency shut-down air cylinder. The rack meshes with a pinion which rotates by a reversible motor with a clutch. If a seismic detecting valv... | 11/06/2001 |
| 6296008 | Switchover valve A switchover valve for switching over from one supply of pressure fluid to another supply thereof in response to failing or failure of the one supply. The valve has a valve body having two inlets for connection thereto of the respective pressure fluid sup... | 10/02/2001 |
| 6131876 | Valve having a displaceable valve spindle The invention relates to a valve comprising a valve housing 1 with a duct 2 that can be optionally opened or closed, a valve body 4 and a valve spindle 3 that is displaceable in relation to the valve body 4 from a first position where the valve spindle 3 ... | 10/17/2000 |
| 6047732 | Directional control valve A directional control valve has snap-locking device for retaining the slide of the directional control valve in at least one switching position. The snap-locking device has a snap-locking part with a snap-locking piston that allows an engagement part to e... | 04/11/2000 |
| 5628490 | Control valve with pneumatic actuation A retrofittable, manually-actuated control valve kit for use in controlling the flow of water from a lavatory tap includes a valve assembly and an actuator assembly. The valve assembly includes a valve movable between flow-blocking and flow-permitting pos... | 05/13/1997 |
| 5575306 | Relief valve trigger for relatively large diameter fluid pressure containers A pressure relief valve trigger is formed by a diaphragm chamber communicating with fluid in a container being monitored by a pressure collapisible pin axially maintaining the diaphragm in the chamber in a given position. A flapper valve latch member rele... | 11/19/1996 |
| 5439028 | Modular valve for a building standpipe A modular valve field convertible between a wet and dry configuration including a valve body and a passage within the valve body for allowing fluid to flow therethrough. A valve seat and clapper are positioned within the valve body. The clapper is allowed... | 08/08/1995 |
| 5351714 | Safety valve for high-pressure pumps, high-pressure water-jet machines and the like A safety valve comprises a valve seat and a spring-loaded first control piston that is axially moveable with respect to the valve seat. The valve seat and the first control piston each having a central channel for a branched-off portion of a transported p... | 10/04/1994 |
| 5297775 | Linkage arrangement for steam turbine valves A linkage device for a steam turbine stop valve includes a support member having a pair of transverse sections separated by a substantially vertical portion; a reciprocal stop valve stem fixed to one of the transverse sections, the stop valve stem extendi... | 03/29/1994 |
| 5295403 | Mechanical actuator A device for power actuating a valve or other controlled unit, including a member operable by movement in opposite directions to move the controlled unit to different positions, a spring yieldingly urging the member in one of those directions, and a latch... | 03/22/1994 |
| 5261446 | Self-contained emergency shutdown valve The improved valve of the present invention is a self-contained emergency safety shutdown valve which does not require the attendance of an individual or an outside power source for its emergency shutdown. The valve illustrated is a gate valve with the ga... | 11/16/1993 |
| 5048791 | Shut off valve A resetable shut off valve includes a body (10) having an inlet (12) and an outlet (14). The inlet and outlet are connected in the valve body through a fluid passage which includes an opening (26). A movable plunger assembly (42) includes a seal disc (56)... | 09/17/1991 |
| 4862919 | Hydraulic control system for a multi-position valve A hydraulic system includes a multi-position valve which controls the flow of system fluid pressure to various work stations. The multi-position valve is biased by a centering spring to a neutral position from which it can be shifted to a selected working... | 09/05/1989 |
| 4700925 | Pressure medium operated servomotor arrangement The servomotor arrangement has a moving system comprising a piston movable in a cylinder. A latching or retaining member movable transversely of the direction of movement of the system is provided to retain or latch the moving system. The latching member ... | 10/20/1987 |
| 4671353 | Apparatus for releasing a cementing plug Apparatus for releasing a cementing plug. A first cylinder mounted on a plug container includes a plunger received therein which is longitudinally moveable into the plug container for supporting a cementing plug. A second cylinder received over the first ... | 06/09/1987 |
| 4665945 | Pressure regulator for a fuel gas A pressure regulator for a fuel gas of the present invention operates to reduce the pressure of the fuel gas kept in a gas container to the predetermined pressure and then supply it to a burner through the secondary passage thereof. Further, the pressure ... | 05/19/1987 |
| 4653522 | Ground hydrant and method for operating same The ground hydrant of the present invention includes an outlet nozzle above ground and a drain water collection cylinder located below the frost line of the ground. When the hydrant is shut off, the residual water in the nozzle drains into the ground wate... | 03/31/1987 |
| 4589496 | Fire suppressant valve using a floating poppet A rapid-acting fire suppressant valve that includes a linearly-movable poppet having a long stroke enabling the poppet to move beyond the suppressant flow stream. Poppet motion is initiated by venting a pre-pressurized piston-cylinder unit; ledge mechanis... | 05/20/1986 |
| 4566478 | Well safety and kill valve Disclosed is a safety and kill valve device useful in tubing above a packer set above a producing formation in a well, operable to shut off tubing flow and open wall flow passages to the well annulus through which heavy formation killing fluid may be pump... | 01/28/1986 |
| 4561630 | Valve A valve for sealing off pressurized fluid for an extended period comprises, a body defining a passageway, a closure member in said passageway for closing off the latter against fluid flow, a pivotally mounted arm for maintaining the closure member in its ... | 12/31/1985 |
| 4523602 | Pressure controller Disclosed is a pressure controller for sensing changes in a service pressure and controlling a control pressure in response to such changes. The pressure controller includes a valve body having a control inlet and a bleed outlet with a passage therebetwee... | 06/18/1985 |
| 4511117 | Activating apparatus in a liquid conveying system operated by vacuum, preferably a so-called vacuum sewage system An activating apparatus or device, for example for a valve in a liquid conveying system operated by means of a vacuum. The activating apparatus comprises a normally latched or locked operating device which by means of a spring, or the like, is connected t... | 04/16/1985 |
| 4503717 | Shock actuated unit A seismic actuator preferably including a differential gear mechanism having an output connected to a valve or other element to be controlled, an input connected to a manually operated member, and an input/output connected to a power unit which acts autom... | 03/12/1985 |
| 4474242 | Annulus pressure controlled reversing valve In accordance with an illustrative embodiment of the present invention, a pressure controlled reversing valve includes a housing defining a reversing port, a spring-loaded sleeve valve normally closing the reversing port, means for locking the sleeve valv... | 10/02/1984 |
| 4457334 | Pressure sensitive valve actuator A pressure sensitive device for shutting off flow through a valve is disced. The device includes a pressure sensor having an integral atmospheric pressure reference for releasing a plunger to shut off flow through the valve. A manually operated eccentric... | 07/03/1984 |
| 4420044 | Flow control system A control valve for a passageway in which the valve is reciprocated toward and away from its seat by pressure within a pressure dome and pressure exteriorly of the valve housing and in which reciprocation is controlled by a J-slot capable of latching the ... | 12/13/1983 |
| 4392812 | Control circuit for gasified liquid fuel combustion apparatus A gasified liquid fuel combustion apparatus which includes a gasifier in which liquid fuel is heated and gasified and delivered to a burner for combustion. A nozzle provided at the outlet of the gasifier is opened and closed by a valve needle operated by ... | 07/12/1983 |
| 4309022 | Poppet valve actuator apparatus A poppet valve actuating apparatus includes an actuator for driving a valve poppet closed with substantial but momentary force to effect tight valve shutoff. After driving the poppet closed with a momentarily-applied relatively high-value force, the actua... | 01/05/1982 |
| 4286768 | Stepped pressure gas valve apparatus The invention is a pressure responsive shut-off valve including a valve housing that defines a fluid inlet and a fluid outlet separated by a valve seat. A valve closure accommodated by the valve seat moves between open and closed positions to control flui... | 09/01/1981 |
| 4180241 | Solenoid operated valve and shut-off device A combined solenoid operated valve and shut-off device including a valve housing defining a fluid inlet, a fluid outlet, and a valve seat therebetween. Located within the housing is a valve closure movable between a closed position in which fluid flow bet... | 12/25/1979 |
| 4179097 | Safety shut-off valve The invention is a pressure responsive shut-off valve including a valve housing that defines a fluid inlet and a fluid outlet separated by a valve seat. A valve closure accommodated by the valve seat moves between open and closed positions to control flui... | 12/18/1979 |
| 4149555 | Gas-actuated valves A plurality of gas actuated valves capable of high-speed action, great prure endurance and withstanding shock, vibration and a marine environment. A sliding member, closing the valves inlet ports, may be retained by a frangible flange. Electrically-initi... | 04/17/1979 |
| 4143672 | Anti-pollution valve for use with shipboard storage tanks A valve unit for installation in a vent to atmosphere from an upper end of a shipboard storage tank for liquids. The valve has a housing with a closure seat, a normally open closure member, and an actuator for automatically closing the closure member agai... | 03/13/1979 |
| 4134421 | Closing spring assembly for slam-shut valves A slam-shut valve provides overpressure protection in a pipeline in the event of regulator failure. The slam-shut valve is normally held latched in the open position. Overpressure or failure of the regulator will automatically trigger operation of the sla... | 01/16/1979 |
| 4120321 | Timing device for a fluid signal and fluid actuator therefor A timing device includes a timing means which effects movement of a motion transmitting member at a selected rate to establish a timed interval of selected duration, upon expiration of which interval a fluid signal is provided at a given point in a fluid ... | 10/17/1978 |
