Matches 1 - 49 out of 49


Match Document Document Title
US20140007964 PROPORTIONAL PRESSURE-REGULATING VALVE  
The invention relates to a proportional pressure-regulating valve (1) comprising a valve housing (3) that has at least three fluid-conducting connections, in particular in the form of a pump...
US20070157980 Pilot operated control valve having a two stage poppet  
A hydraulic valve has a main poppet that engages and disengages a valve seat to control the flow of fluid between an inlet and an outlet. Movement of the main poppet is governed by a pilot valve...
US20060076067 Fluid conrol valve  
The invention provides a fluid control valve for controlling the flow of hydraulic fluid from a hydraulic pump to and from a plurality of hydraulic motors. The valve conveniently includes selector...
US20090114298 VALVE CONTROL UNIT  
A valve control unit that prevents a decline in interlocking operation performance when pilot pressure control of a plurality of pilot-operated control valves is carried out by proportional...
US20120291900 SOLENOID VALVE AND OIL PRESSURE CONTROL DEVICE  
A solenoid valve has a linear solenoid, a common cylindrical sleeve, one axial end of which is fixed to the linear solenoid, and a common spool movably accommodated in the sleeve, and a return...
US20070199601 DIRECTIONAL OR FLOW CONTROL VALVE  
A valve selected from the group consisting of a directional valve and a flow control valve has an inlet connection, an outlet connection, a slide that controls a fluid connection between the inlet...
US20120255617 PILOT-OPERATED THREE-POSITION SWITCHING VALVE  
A first piston with a smaller diameter and a second piston with a larger diameter that switch a spool between a first switching position at one end and a second switching position at the other...
US20100313980 Solenoid valve apparatus  
A solenoid valve apparatus includes a solenoid valve and a switching device that switches between a first state in which the working fluid in the pump chamber is discharged when the solenoid valve...
US20120216896 SERVO VALVE  
It is an object to provide a servo valve that can be manufactured at low cost by simplifying adjustment of the relative position between a nozzle and a flapper and simplifying the configuration of...
US20070209722 Multi-way valve  
A multi-way valve has a housing with a stepped bore forming two piston guiding regions and a shoulder ring with two sealing shoulders. The housing also has a first, second and central transverse...
US20070157979 Fluid-control system  
A spool valve includes a valve housing. The valve housing may include a cavity, a first passage extending from the cavity, and a plurality of ports connected to the cavity. The spool valve may...
US20080092967 Control valve assembly  
A control valve assembly includes a valve body having a valve opening, a first pressure passage, a second pressure passage, and a valve body land. A valve member is received in the valve opening...
US20090250021 FLUID CONTROL SYSTEMS EMPLOYING COMPLIANT ELECTROACTIVE MATERIALS  
The present invention includes fluid control systems employing compliant electroactive materials.
US20120285568 VALVE DEVICE  
The invention relates to a valve device comprising a valve housing (2) and a valve piston (4) arranged in an axially displaceable manner in a piston bore (3) of the valve housing (2), via which...
US20090159143 FLUID PRESSURE CIRCUIT  
A fluid pressure circuit that can, in either case where a first actuator that is fed from a first pump or a second actuator that is fed from a second pump is operated, by allowing feeding of the...
US20070163662 Proportional pressure control valve  
A proportional pressure control valve particularly for electro-hydraulic transmissions. The valve includes a cage having pump, clutch, and tank port openings. A spool is received within the cage...
US20050139273 Electromechanically controlled proportional valve  
The proportional valve is insertable in a support element and comprises a hollow body having a plurality of inlet openings, a plurality of outlet openings and a plurality of discharge openings....
US20080066814 Two-Stage Servo-Valve  
A two-stage servo-valve has a first stage in which four flow resistances are arranged in a bridge circuit. At least one of the flow resistances is variable, and two opposite switching points of...
US20100200090 Spool Valve  
Two stage spool valves having, in a single assembly, a first stage spool and a second stage spool. The first stage spool may have a solenoid actuator with a return spring, with the second stage...
US20110088789 HYDRAULIC CONTROL VALVE  
A hydraulic control valve is provided, which can prevent the occurrence of overload by relieving hydraulic fluid of a return line in which the overload occurs due to an inertial force of a rotator...
US20080078462 Valve controller  
A controller for controlling a valve is disclosed including a manifold assembly, a valve position indicator and a trigger assembly. An operating media distribution system is disposed in the...
US20120186441 Torque Control for Open Circuit Piston Pump  
A pump control system and a torque control valve are disclosed. In one embodiment, the torque control valve includes a sleeve, a spool disposed in the sleeve, and a piston rod disposed through the...
US20100224059 ELECTROHYDRAULIC BOOSTER  
An electrohydraulic booster comprises an electromechanical transducer and a hydromechanical power stage which is connected to a pressurized medium supply and encompasses a cylinder and a piston...
US20150211552 ELECTRONIC CONTROLLER WITH INTEGRAL VENT VALVE  
An electronic regulator includes an inlet valve coupled to an inlet port, the inlet port configured to receive a supply pressure, and an exhaust valve coupled to an exhaust port, the exhaust port...
US20090301588 Solenoid valve  
A valve section that functions as a solenoid valve device that includes a pressure adjusting section that adjusts fluid pressure supplied from a fluid pressure source; a pump section that sucks...
US20070181196 Spool valve  
Two stage spool valves having, in a single assembly, a first stage spool and a second stage spool. The first stage spool may have a solenoid actuator with a return spring, with the second stage...
US20150129070 METHODS AND APPARATUS TO BIAS SPOOL VALVES USING SUPPLY PRESSURE  
Methods and apparatus to bias spool valves using supply pressure are disclosed. An example apparatus includes a housing of a spool valve, the housing including a first port to receive a fluid at a...
US20110083763 PRESSURE CONTROL VALVE  
A pressure control valve is provided, which can variably control the set pressure of the pressure control valve through manipulation of a signal pressure generation device in an operator's seat or...
US20060054225 Proportional pressure control valve  
The invention relates to a proportional pressure control valve comprising a valve housing (10) with at least three ports that conduct fluid, in particular in the form of a pump port (P), a...
US20080257434 Hydraulic Control System for High Flow Applications in Motor Vehicles  
A hydraulic control system for high flow applications in motor vehicles, in particular for active wheel suspensions and active steering arrangements, includes at least one passive high flow valve...
US20100163128 HYDRAULIC DIRECTIONAL VALVE  
A hydraulic directional valve having an electromagnetic actuating unit and a valve section, an essentially cylindrical, blind hole-like receptacle being formed on one component of the actuating...
US20100218836 DIRECTLY PILOTED VALVE ASSEMBLY  
A directly piloted valve assembly has a valve body including a bore, at least one inlet port, at least one outlet port and at least one exhaust port or second outlet port wherein the ports are all...
US20150198182 ELECTROHYDRAULIC CONTROL VALVE  
An electrohydraulic control valve (1) is disclosed, said control valve (1) comprising a control valve element (2) that is displaceable in a first direction by a pressure in a first pressure...
US20150096636 ENGINE VALVETRAIN OIL CONTROL VALVE  
An oil control valve assembly includes a valve body and a controller coupled to an exterior end of the valve body. The controller includes a solenoid housing attached to the exterior end of the...
US20100326552 SOLENOID VALVE  
In a solenoid valve, multiple flow-blocking portions are formed in a passage between a supply port (23) and an output port (24) and a passage between the output port (24) and a drain port (25)....
US20110232791 PROPORTIONAL VALVE EMPLOYING SIMULTANEOUS AND HYBRID ACTUATION  
Disclosed is an exemplary valve having a first valve member that may include at least one orifice, and which is moveable between a first position and a second position, and a second valve member...
US20150020905 VALVE ASSEMBLY HAVING DUAL FUNCTIONALITY FOR DIRECTIONAL CONTROL OF A PISTON ON A FLUID ACTUATED DEVICE  
Embodiments of a directional valve assembly that provides a single device with functionality of a two-position design for automated operation and functionality of a three-position design for...
US20100313981 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...
US20140345728 VALVE ASSEMBLY  
A valve assembly comprising an inner housing in which is provided a first port, a second port, and a third port, and a valve member assembly which is movable between a first position, a second...
US20070169826 Valve  
The invention relates to a valve, particularly a proportional pressure control valve for controlling fluid flows, comprising a valve housing (10), which has at least three fluid-conducting...
US20150059898 DOUBLE SOLENOID VALVE WITH DETENT MECHANISM  
A detent mechanism that increases a holding force for the valve member having two switch positions when the valve member is in each of the switch positions includes a ring shaped housing groove...
US20150123460 VALVE ASSEMBLY  
A valve assembly including a housing and a first movable member which divides the housing into a control chamber and a main chamber. A second movable member has a first valve part and a second...
US20150047731 EXTERNALLY FITTED CONTROL DEVICE AND HYDRAULIC CONTROL MODULE FOR AN EXTERNALLY FITTED CONTROL DEVICE  
The externally fitted control device includes an electronic control module (1), a hydraulic control module (2) and a common control enclosure (3). The hydraulic control module (2) has...
US20140318652 VALVE BLEED SYSTEM  
A valve control unit is connected to a control valve and automatically moves a valve spool first and second bleed positions. The control unit prevents valve bleed if the control valve is in its...
US20130276925 PRESSURE REGULATING DEVICE WITH DETECTION OF THE NEUTRAL POSITION  
The present invention relates to a pressure regulating device (1), in particular a hand- or foot-operated hydraulic controller for a heavy construction machine, characterised in that it comprises...
US20100139795 DIRECT-ACTING PILOT PRESSURE CONTROL SOLENOID  
The present invention is directed to a solenoid valve having a valve body with a fluid passage extending at least partially through the valve body. A supply port is disposed through the valve body...
US20170184208 APPARATUS TO BIAS SPOOL VALVES USING SUPPLY PRESSURE  
Apparatus to bias spool valves using supply pressure are disclosed. An example apparatus includes a sleeve of a spool valve, and a spool within the sleeve to control a flow of fluid at a supply...
US20170130897 ENGINE VALVETRAIN OIL CONTROL VALVE  
An oil control valve assembly includes a valve body and a controller coupled to an exterior end of the valve body. The controller includes a solenoid housing attached to the exterior end of the...
US20170059057 ELECTROMAGNETIC PROPORTIONAL CONTROL VALVE SYSTEM  
In an electromagnetic proportional control valve system, left and right position control apparatuses 20 and 30 are disposed on the both ends of a main spool in a three position proportional...

Matches 1 - 49 out of 49