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Match Document Document Title
8936042 Dual control dead man system  
A dual control shut off system, such as a dead man system for a blasting system, blasting equipment, or other equipment having both pneumatic and electric safety control circuits, may include an...
8820703 Double action directional fluid flow valve  
A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous...
8740176 Driving and adjusting device of passive shuttle-type shut-off valve  
A driving and adjusting device of a passive shuttle-type shut-off valve is provided. The problems of a big valve body structure size, a non-random angle installment, a single drive mode, low...
8733729 Back pressure capable solenoid operated diaphragm pilot valve  
A valve assembly comprising an inlet port, an outlet port, and a diaphragm configured to selectively allow communication between the inlet port and the outlet port, the diaphragm including a first...
8726937 Control device for an extracting unit in the work face of a mine  
The invention relates to a control device for an extracting unit in the face of a mine, for actuating the hydraulic actuator in the sense of drawing, stepping, setting, and having a plurality of...
8528876 Secondary bleed valve for dual flush valve  
An apparatus for providing flushing fluid at different rates has a valve for controlling flow through a housing, the valve having a reset area to close the valve, a first bleed valve for...
8490640 Latching pressure regulator  
A system for regulating pressure supplied to a transmission control element, includes a control pressure source and line pressure source, a latch valve that opens and closes communication with the...
8485496 Electronic flush valve with optional manual override  
A flush valve assembly including a discharge receiver with a plug opening therein, a sleeve, a main valve assembly positioned within the sleeve, and a main diaphragm sealingly connected between...
8393344 Microvalve device with pilot operated spool valve and pilot microvalve  
The microvalve device includes a pilot microvalve and a pilot operated spool valve. The pilot microvalve includes a pilot input orifice; a pilot output orifice, at least one of the pilot input...
8387659 Pilot operated spool valve  
A spool valve assembly includes a spool that is moveable by differential pressure across the spool.
8256738 Double action directional fluid flow valve  
A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous...
8251089 Relief system for process fluids under pressure  
A relief system for process fluids under pressure. The system includes a normally open isolation valve in fluid communication with a process system under pressure through an upstream conduit. A...
8151813 Quad-redundant hydraulic trip system  
A voting solenoid system and method is configured to selectively apply fluid pressure above and below a threshold value, to a fluid node. The voting solenoid arrangement includes first and second...
8113482 Microvalve device with improved fluid routing  
A microvalve device for controlling the supply of pressurized fluid to a load in a fluid circuit, and having multiple internal fluid conduits for providing pressure feedback.
8069928 Percussion device, drilling machine including such a percussion device and method for controlling such a percussion device  
A percussive device and method having, inside a machine housing (3), a reciprocally moveable percussive piston (2), the movement of which is controlled by a control valve (5), which is arranged to...
7828008 Online partial stroke testing system using a modified 2004 architecture  
A system and a method for partial stroke testing of a critical valve using a bypass valve includes flowing two streams of gas simultaneously through a bypass valve, opening the critical valve with...
7766033 Multiplexed latching valves for microfluidic devices and processors  
Membrane valves and latching valve structures for microfluidic devices are provided. A demultiplexer can be used to address the latching valve structures. The membrane valves and latching valve...
7658200 Semiconductor manufacturing apparatus and control method thereof  
The present invention provides a semiconductor manufacturing apparatus having a slit valve control system including first and second process chambers disposed adjacent to each other, a slit...
7654503 Pilot valve  
A valve assembly is disclosed that includes a main valve, a pilot valve, and means providing fluid communication between the main valve and the pilot valve. The main valve includes an inlet,...
7650905 Emergency isolation valve apparatus  
An emergency isolation valve has a valve plug in a valve body connected to a pipeline. The valve plug is connected to a valve shaft around which a sector gear is provided and engaged with a rack...
7328817 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Device for dispensing a heated liquid
 
A device for dispensing a heated liquid, such as a hot melt adhesive, which includes a dispenser body adapted to dispense the heated liquid, a solenoid valve, and a pneumatic section including a...
7303147 Sprinkler having valve module with reciprocating valve seat  
A sprinkler includes an outer case and a riser mounted for reciprocation within the case. The riser supports a nozzle, an impeller, and a drive linkage connecting the nozzle and the impeller. A...
7118087 Coupling solenoid valve  
A coupling solenoid valve having a main valve unit and a solenoid operating unit, of which both side faces in the valve-width direction correspond to a first coupling face and a second coupling...
7100628 Electromechanically-assisted regulator control assembly  
An electromechanically-assisted control system for use in a second-stage regulator. Regulator control assembly (20), also referred to as EMA assembly (20), includes a mechanical actuator...
7028975 Flush valve structure  
A flush valve structure to control flush water through a pressure difference mainly includes a case, a solenoid assembly, an upper intermediate board, a lower intermediate board and a main water...
6974114 Double valve flusher  
A double valve flusher includes a body, a separating plate, an upper and a lower valve base, a movable valve, a film valve, a fixing member, and an electromagnet. An upper leak room is formed...
6910496 Gas conversion assembly  
A gas conversion assembly generally has a gas inlet and a gas outlet. The assembly includes a control mechanism for regulating the flow of gas from the inlet to the outlet. The control mechanism...
6883541 Manual-automatic water faucet  
A manual-automatic water faucet includes a shell installed inside with a water intake base, a water outlet valve, an electromagnetic valve, an induction device and a control device. The control...
6871834 Circuit for operating a valve closure system  
A circuit (10) for operating a bi-directional air motor (12) of a valve closure system for enabling a tank valve to be discretionally operated to either open or closed condition either at the tank...
6802339 Assembly having a spring-loaded tandem control valve  
The fitting, in particular a safety valve, operates according to the relief principle or according to the loading principle. The fitting is opened and closed by a plurality of control parts. The...
6766828 Interlock valve  
An interlock valve is formed by incorporating a main valve portion having a valve member into a first casing, incorporating a driving-side operating portion 2 having a driving piston for driving...
6705342 Modulating gas valve with natural/LP gas conversion capability  
An electronically modulating gas valve comprising a modulating solenoid for simultaneously displacing two servo regulator diaphragms, one for controlling LP Gas outlet pressure and another for...
6659420 Manual and automatic flow control valve  
A manual and automatic flow control valve includes a valve body, a manual control unit, a hollow pressure-releasing device, a middle plate, an upper casing, and an electric controlled magnetic...
6644346 Spring-loaded tandem control valve  
The fitting, in particular a safety valve, operates according to the relief principle or according to the loading principle. The fitting is opened and closed by a plurality of pilot parts. The...
6637722 Pilot operated microvalve device  
A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. A pilot valve supported by the body is movably disposed in...
6584999 Fluid pressure controller  
A fluid pressure controller has an air supply valve plug displaceable under an action of pilot pressure of a pilot chamber. When the air supply valve plug is seated on a seat section, fluid...
6478048 Two out of three voting solenoid arrangement  
A binary voting solenoid arrangement 10 is provided which operates in a “2 out of 3” manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while...
6443419 Fast working hydraulic valve  
The invention relates to a quick switching hydraulic valve (7, 8) which opens or can be kept closed using an electric signal of low energy and which can switch very quickly with large passage....
6443175 Vacuum pressure generator circuit with non-volitile memory function  
The present invention is a pressure feedback circuit for use with a vacuum pressure control circuit. The pressure feedback circuit detects the occurrence of, and controls the generation of vacuum...
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...
6398182 Pilot solenoid control valve with an emergency operator  
A discharge valve is provided to open an electrically controlled pilot valve in emergency situations such as during an electrical or hydraulic failure. The discharge valve has a poppet that...
6398181 Valve arrangement  
A valve arrangement (10) for hydraulically actuated machinery installations, especially for powered support assemblies in underground mining, with hydraulically actuated working valves (12, 13,...
6354327 Automatic position-control valve assembly  
According to principles of this invention, an override controller is structured for being placed in pressurized fluid lines between a valve position transducer and a valve position actuator of an...
6296226 Fluid metering system  
A fluid metering apparatus includes a gas inlet, a first regulator in fluid communication with the gas inlet and configured to emit the gas at a first gas pressure, and a second regulator in fluid...
6253784 Monostable valve  
A monostable valve for controlling the sudden discharge of a gas contained in an enclosure. This valve comprises, in a control conduit (17), a second shutoff (18) between a closed position wherein...
6167901 Pilot 3-port transfer valve  
A transfer valve comprising three ports including a first, second, and third ports 17, 18, and 19 includes a pilot supply channel 22 for supplying a pilot fluid to a pilot valve 13, and the pilot...
6155282 Two out of three voting solenoid arrangement  
A binary voting solenoid arrangement 10 is provided which operates in a "2 out of 3" manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while...
6109291 Pilot 5-port transfer valve  
A transfer valve comprising a first port 17 for supplying and ejecting a pressurized fluid, a second and third ports 18 and 19 for output, and a fourth and fifth ports 20 and 21 for ejection and...
6053202 Fail-safe closure system for remotely operable valve actuator  
A fail-safe closure system for one or a plurality of springless process valve actuators is disclosed. An accumulator is provided with an urging means, such as a spring for pressurizing fluid...
6010112 Driving device for a shut-off device in a pipe-line  
A driving device for a shut-off device in a pipe-line includes a piston/cylinder unit able to be connected to a slide valve plate of the shut-off device. A working chamber of the unit is connected...

Matches 1 - 50 out of 210 1 2 3 4 5 >