Matches 1 - 50 out of 342 1 2 3 4 5 6 7 >


Match Document Document Title
8973890 Fluid-operated actuating drive on a valve  
A fluid-operated actuating drive on a valve comprising a base unit (2) having an electro-fluidic signal converter and a fluidic controller and at least one linear actuator (4) that can be actuated...
8925895 Cutoff valve control apparatus  
The present invention provides a cutoff valve control apparatus capable of predicting a failure of devices therein with a failure diagnosis based on an operation test when the cutoff valve control...
8887752 Fuel staging system  
A fuel staging system comprises a splitter valve arranged to split an input fuel stream into a pilot fuel stream and a main fuel stream, the splitter valve comprising a spool slidable within a...
8844899 Control valve  
A control valve includes a signal pressure passage that transmits a pilot pressure in first and second pilot chambers as a signal pressure of another device, and first and second connecting...
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...
8714515 Hydraulic actuating device for a sliding stem control valve assembly  
A hydraulic actuating device for a sliding stem control valve assembly is mounted between a control valve and an actuator housing. The hydraulic actuating device is connected to one of a control...
8567752 Rotary valve actuators having partial stroke damping apparatus  
Rotary valve actuators having partial stroke damping apparatus are described herein. An example rotary valve actuator described herein includes a housing containing a first piston and a second...
8453678 Piloted poppet valve  
A valve assembly includes a valve body having a valve bore. A valve member is slidably disposed within the valve bore between first and second stop positions. First and second valve elements of...
8371552 Shift actuator valve having a pressure dead band  
A valve assembly having a pressure dead band includes a first valve or sleeve slidably disposed within a valve body. A second valve is partially slidably disposed within the first valve and...
8336849 Conical seat shut off valve  
A valve includes a housing defining a bore having an inlet and extending along a longitudinal axis. A head is attached to the housing and defines a head passage having an outlet. A piston is...
8313082 Proportional position feedback hydraulic servo system  
A system for positioning a device such as a valve with a mechanical input using a fluid operated actuator, a mechanical position feedback member coupled to a feedback element of the fluid operated...
8297586 Proportional control pneumatic cylinder  
A proportional control pneumatic cylinder as an air actuator device for a hydraulic pump valve having a valve spool moving in a bore in a valve housing. The device having an actuator housing...
8191860 Low profile valve actuator having high torque output  
A valve actuator is provided for use in conjunction with a drive motor and a valve. In one embodiment, the valve actuator includes a housing assembly, a first power screw rotatably mounted in the...
8156960 Servo pressure control valve  
A valve for controlling pressure in a system is provided. The valve includes a housing, a servo spool and a piston positioned within the housing with the piston and the servo spool being movable...
8151900 Percussion equipment driven by a pressurized incompressible fluid  
A percussion apparatus driven by a pressurized incompressible fluid includes a body with two coaxial bores for slidably mounting of a tool, and separately slidably mounting a striking piston...
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.
8091857 Valve  
A valve assembly (10) to regulate the flow of a refrigerant. The valve assembly (10) includes a movable valve member (25) to which there are attached two pistons (29 and 30). A refrigerant under...
8087637 Self-regulating valve for controlling the gas flow in high pressure systems  
A controlled pressure release valve controls the gas flow in high-pressure systems. The valve includes a valve body, a slidable spool, a primary flow passage, a first and second chamber, a first...
8079567 Regulated valve assembly for fire extinguishing systems  
A valve assembly has a valve body having an inlet section for a pressurized fluid and an outlet. A piston is movable within the valve body between an open position and a closed position blocking...
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...
8011639 Poppet type flow control valve  
A valve of the invention includes a valve body having an inlet, an outlet, and a flow passage connecting the inlet and outlet, the inlet, the outlet and the flow passage being in general axial...
7836694 Air bearing turbo cooling air flow regulating device  
A cooling air flow regulating device for controlling the flow of cooling air to an air bearing may comprise a housing with a piston and a spring disposed within. When the pressure of the cooling...
7735517 Rotary-actuated electro-hydraulic valve  
A valve for controlling fluid flow in a fluid system is disclosed. The valve includes a housing, a servo spool, and a piston. The servo spool defines a spiral groove and a spiral land. The piston...
7637281 Pilot controlled pulse valve  
A pilot controlled pulse valve has a valve spool releasably held in both terminal positions by a latching device. The latching device comprise a permanent magnet holding the valve spool by...
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...
7063517 Valve apparatus and pneumatically driven diaphragm pump incorporating same  
A valve apparatus and pneumatically driven diaphragm pump incorporating same having a valve body having a longitudinal axis and an actuator having an axis with a first end and a second end. The...
7025325 Flow control valve  
Disclosed is a flow control valve capable of controlling a flow amount of air, gas or fluid inside a pipe. The flow control valve has a relatively simple structure, which can reduce manufacturing...
7011289 Valve  
A sliding spool valve (1) is provided for controlling flow of fluid especially between an inlet (2) at a relatively high pressure and an outlet (6) at a relatively low pressure. Wherein the spool...
6991210 Actuator for driving a valve  
The purpose of this invention is to provide an actuator for valve driving without enlarging its size, without increasing the cost, and without reducing the pressure receiving area of the pistons....
6983803 Equalizer valve and associated method for sealing a fluid flow  
A dirty fluid valve for sealing high differential fluid pressures in a drilling environment and methods for using such a valve is disclosed. One embodiment of the valve includes a seal cartridge...
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...
6860464 Electromechanical/pneumatic rocket engine valve actuator  
A valve actuator assembly is provided for selectively opening and closing a valve. The valve actuator assembly includes a primary motor and secondary motor both operatively coupled to an output...
6854478 Fluid-controlled valve for pipeline pig  
A fluid control valve for a pipeline pig includes a main valve and a mechanism for operating the main valve. The main valve comprises a valve body communicated to a fluid pipe, a main valve core...
6830229 Two-stage valve suitable as high-flow high-pressure microvalve  
A two-stage valve for controlling the flow of fluid from a pressurized fluid supply with an upper main body including a cavity with a contoured inner surface; a lower main body with at least one...
6729302 Fuel injection system for an internal-combustion engine  
A fuel injection system for an internal-combustion diesel engine has a fuel injector, typically one of several, supplied by way of a high-pressure fuel line with highly pressurized fuel for the...
6719263 Multi-piston valve actuator  
A pressurized-fluid-operated actuator has multiple piston surfaces for providing increased output force. The actuator includes a stationary cylinder that contains a movable cylinder having...
6672088 Self-contained regulating valve, and compression type refrigerating machine having the same  
A self-operated regulating valve has a spool (13) moving axially in an internal space of a cylindrical valve body (11). One pressure P1 acts on one end surface of the spool (13), and other...
6612537 Cartridge gate valve  
The present invention is directed to a compact and modular gate valve comprising an elongated body which comprises first and second ends, a hole which extends longitudinally between the first and...
6386508 Actuator having dual piston surfaces  
A pressurized-fluid-operated actuator has two piston surfaces for providing increased output force. The actuator includes a hollow piston that is divided into two inner chambers by a stationary...
6273135 Fuel flow control apparatus  
A high pressure fuel system includes tapped high pressure flows (22,24) with restrictors (44,46) to provide low pressure flows with which, via a valve (50) to enable either a low pressure flow to...
6202671 Control valve for cryogenic liquid propellant  
A valve for controlling flow of cryogenic liquid propellant in a rocket engine comprises a double acting piston-cylinder unit having a first position in which the valve is closed and a second...
6173740 Highly versatile fluid-actuated valve control actuator  
A fluid-actuated valve control actuator, comprising a body in which two mutually opposite pistons are accommodated, each piston being provided with a rack and being adapted to engage a shaft for...
6173938 Two speed air cylinder for slit valve motion control  
A multi-speed slit valve apparatus and method of actuating a slit valve apparatus at least at two distinct speeds is provided. The slit valve apparatus includes a pneumatic cylinder 210 having a...
6170524 Fast valve and actuator  
A fast-acting valve includes a valve body and a spool slidably mounted within the valve body between first and second limit positions. Both the spool and the valve body have a flow passage which...
6155531 Proportional control value  
A proportional control valve has inlet and outlet solenoids controlling the pressurization and evacuation of a chamber between two pistons in a control valve of the rack and pinion opposed-piston...
6102362 Gas motor actuator  
A gas motor actuator is provided for opening or closing an actuated valve, such as a pipeline valve, using power gas, which is a gas under pressure. The gas motor actuator includes a gas turbine...
6102363 Actuator for reciprocating air driven devices  
An actuator valve for an air driven reciprocating device including a housing with a cylinder having a sliding valve piston located therein. The valve piston includes circumferential grooves near...
6085777 Dual cylinder insertion apparatus  
A probe structure for inserting into and operating upon an object within a pipeline, especially a high pressure pipeline carrying liquid or gas, is characterized by two coaxial cylinders that can...
6062534 Double acting rotary valve actuator  
A rotary valve actuator with movable actuator linkage maintained in a constant "pull-pull" tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line...
6029693 Valve driving apparatus  
A valve driving apparatus for actuating a shutoff valve or a dump valve provided in a pipeline for conveying a gaseous or liquid substance. The valve driving apparatus is constructed by disposing...

Matches 1 - 50 out of 342 1 2 3 4 5 6 7 >