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| Number | Title | Issue Date |
| 7832427 | Control valve arrangements A valve arrangement includes a valve member, which rotates continuously in one sense. The generally cylindrical head of the valve member, within the housing, is formed to co-operate with various ports to create reciprocation in the actuator. It is preferred to provi... | 11/16/2010 |
| 7757714 | 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 the bridge circuit are connected to an air inlet and to an air outlet re... | 07/20/2010 |
| 7343845 | Fluid operated position regulator A fluid operated position regulator comprises a servo means, arranged in a regulator housing and by which a supply connection, a venting connection and a power connection can be placed in circuit in an adjustable manner. To predetermine or set its position the servo... | 03/18/2008 |
| 7331565 | On/off solenoid A solenoid control valve is described wherein the valve employs a precision molded plastic valve seat member, a corresponding control valve body which includes flying buttresses for supporting and distributing loads on the control valve body, and armature vent featu... | 02/19/2008 |
| 7331564 | Normally open high flow hydraulic pressure control actuator A solenoid-operated valve includes a valve body defining a valving bore for providing a path of communication between axially spaced inlet and outlet ports. A solenoid assembly is attached to the valve body and includes an inductor coil, a fixed flux guide and an ar... | 02/19/2008 |
| 7328688 | Fluid pumping apparatus, system, and method A fluid pumping apparatus, system, and method are disclosed in which an apparatus according to one embodiment of the invention comprises a housing, an inlet through which the fluid enters the housing, an outlet through which the fluid leaves the housing, a valve com... | 02/12/2008 |
| 7290565 | Methods and apparatus for splitting and directing a pressurized fluid jet within a servovalve A jet reflector servovalve includes a flexure tube and reflector that opposes a fluid nozzle and fluid receivers of the servovalve. During operation, the nozzle directs a pressurized fluid jet toward the reflector. The pressurized fluid travels within a second stage... | 11/06/2007 |
| 7240894 | Pulse width modulated solenoid A pulse width modulated solenoid control valve is described, wherein the valve includes a polymer fluid control body. The body includes a segmented fluid flow path for providing strength to the fluid control body assembly. Stand off ribs are provided to improve asse... | 07/10/2007 |
| 7207353 | Pilot controlled multiway valve A multiway valve has valve housing and at least one pilot valve arranged in it. The principal valve housing possesses an integral principal housing part wherein at least the control section of a valve spool is arranged. The pilot valve possesses a head piece which i... | 04/24/2007 |
| 7201181 | Mixing valve A mixing valve for mixing steam and water comprising an inlet chamber for steam, an inlet chamber for water, and a mixing chamber for mixing the steam and the water. The mixing chamber has at least one outlet connected thereto. A valve member arranged in the steam i... | 04/10/2007 |
| 7192005 | Control method and controller for a solenoid-operated electrohydraulic control valve A method and system for controlling a solenoid-operated pressure regulator valve to achieve high compliance with respect to a commanded current in accordance with a precalibrated transfer function. A dither frequency imposed on applied current is changed at precalib... | 03/20/2007 |
| 7131426 | Fluid flow rate control valve, anchor for mover and fuel injection system To effectively prevent uneven wear of a moving mover 70 and to stabilize the control characteristics by a valve. Rotation force is exerted to the mover 70 by the fluid flowing from the first chamber to the second chamber, or vice versa, which are forme... | 11/07/2006 |
| 7069947 | Fluid control valve A fluid control valve includes a valve body, an annular groove portion formed in an outer periphery of the valve body, a filter provided in the groove portion. The filter includes a plate with a plural of perforations and formed into a cylindrical shape. The filter ... | 07/04/2006 |
| 7017601 | Electromagnetic valve An electromagnetic valve of a reduced size capable of suppressing temperature rise of a coil regardless of continuous electrical energization over an extended time while preventing attracting force from lowering includes a coil cooling fluid passage (9a; | 03/28/2006 |
| 6967550 | Electromagnetic regulating device An electromagnetic regulating device with a movable actuator (42), especially a piston, having an engagement region (44) on an end thereof, and a coil device (34, 36), which is stationary relative to the actuator and which is designed to exert a... | 11/22/2005 |
| 6953057 | Automatic transmission shift control solenoid and valve A control solenoid and valve includes a valve bodying having a magnetic assembly, hydraulic assembly, and a pressure regulation member. The magnetic assembly and pressure regulation member are formed respectively on offset axes preferably substantially parallel to o... | 10/11/2005 |
| 6926033 | Proportional pressure control valve This invention generally concerns electronically controlled hydraulic valves for use in electro-hydraulically controlled transmissions. The proportional pressure control valve 20 includes a hollow cage 42 pierced by cage tank ports 52, cage clut... | 08/09/2005 |
| 6913242 | Solenoid plunger system with an impact damping mechanism The invention is directed to a solenoid plunger system for an electro-pneumatic pressure transducer comprising at least partially in a cladding, particularly an iron cladding, a solenoid plunger, a core such as an iron core or a magnetic core, at least a first reces... | 07/05/2005 |
| 6910493 | Control apparatus, method and diagnostic for hydraulic fill and drain Hydraulic fill and drain of a clutch chamber is controlled with a blocking valve and a trim valve. The blocking valve selectively provides pressurized fluid to the trim valve which in turn selectively provides the pressurized fluid to the clutch chamber. Exhausting ... | 06/28/2005 |
| 6814103 | Solenoid valve, in particular, a pressure control valve A solenoid valve has a housing having work, pressure, and tank connectors. An armature is movably arranged in the housing and cooperates with a coil. A slide is moveably arranged in the housing and has a hydraulic chamber connected to the work connector and connecta... | 11/09/2004 |
| 6786236 | Electrohydraulic servo valve A two, three or four-way valve includes two stages each with working valve components linked by a feedback spring so that a first stage servo unit is auto-nulling and the stroke of the valve member in a second stage valve unit is proportional to the input current to... | 09/07/2004 |
| 6647965 | Pump assembly and method A pump assembly and method for an internal combustion engine includes a high-pressure pump for pressurizing oil used to actuate fuel injectors or other devices, a hydraulic inlet throttle valve, a three-way valve for alternatively connecting the inlet thr... | 11/18/2003 |
| 6615869 | Solenoid valve A solenoid valve has a solenoid, a control valve having a spool, a seat member having an oil hole whose one end communicates with a control pressure chamber between the seat member and the spool, a supply passage through which a second supply port communi... | 09/09/2003 |
| 6571828 | Proportional pressure control valve This invention generally concerns electronically controlled hydraulic valves for use in electro-hydraulically controlled transmissions. The proportional pressure control valve 20 includes a hollow cage 42 pierced by cage tank ports 52, cage clutch ports 5... | 06/03/2003 |
| 6557822 | Dynamically stable flow amplifying poppet valve A flow amplifying poppet valve is useful in hydraulic circuits requiring low leakage when in a loaded condition. Undesirable pressure fluctuations effect the stability of the poppet. Tilting of the poppet valve within the bore increases friction that degr... | 05/06/2003 |
| 6460558 | Pilot stage or pressure control pilot valve having a single armature/flapper An improved pilot stage includes a flapper having first and second ends, first and second nozzles in fluid communication with the first and second ends, and a magnetic torque motor having a first coil which is magnetically coupled to the first end of the ... | 10/08/2002 |
| 6405746 | Proportional pressure control valve This invention generally concerns electronically controlled hydraulic valves for use in electro-hydraulically controlled transmissions. The proportional pressure control valve 20 includes a hollow cage 42 pierced by cage tank ports 52, cage clutch ports 5... | 06/18/2002 |
| 6343621 | Variable force solenoid control valve A solenoid control valve (10) that includes an electromagnetic coil (30) positioned within a housing (16) and a spool valve (72) positioned within a central bore (70) of a valve body (20). An armature (40), including a pin element (44) and a check ball (4... | 02/05/2002 |
| 6286535 | Proportional pressure control valve The technical field of the invention generally concerns electronically controlled hydraulic valves adapted for use in electro-hydraulically controlled automotive transmissions. The proportional pressure control valve 20 includes a hollow cage 42 pierced b... | 09/11/2001 |
| 6223761 | Proportional variable force solenoid control valve with armature damping Proportional variable force solenoid valve for controlling pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, and a... | 05/01/2001 |
| 6196249 | Pressure regulating method and apparatus The pressure of hydraulic fluid which is supplied to the continuously variable transmission in the power train of a motor vehicle is regulated by an apparatus wherein an adjustable pilot valve can receive fluid from a pilot conduit leading to a pressure r... | 03/06/2001 |
| 6109300 | Proportional variable force solenoid control valve and transmission fluid control device A fluid control device for an electronic transmission is provided and includes a transmission spool valve and a proportional variable force solenoid valve disposed in a common housing for controlling the pressure of a fluid supplied to a first end of the ... | 08/29/2000 |
| 6029703 | Pressure solenoid control valve with flux shunt A solenoid control valve (10) that includes an electromagnetic coil (30) positioned within a housing (16) and a spool valve (72) positioned within a central bore (70) of a valve body (20). An armature (40) is axially positioned within the coil (30) and an... | 02/29/2000 |
| 6021876 | Electrical proportional pressure control valve A pressure control valve having an electric first stage pilot with a single pilot outlet port and providing a variable pressurized hydraulic fluid to the pilot outlet port and at a pressure that is proportional to an electric input signal variable between... | 02/08/2000 |
| 6019120 | Single stage variable force solenoid pressure regulating valve A solenoid actuated valve for regulating the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal including a nozzle housing having an end connected to a solenoid housing and a fixed fl... | 02/01/2000 |
| 5996628 | Proportional variable force solenoid control valve A proportional variable force solenoid valve comprises a non-magnetic housing having a solenoid and a permanent magnet armature movable by the solenoid in response to current applied to the solenoid, a coil compression spring for biasing the armature in a... | 12/07/1999 |
| 5836335 | Proportional pressure control valve The technical field of the invention generally concerns electronically controlled valves for use in electro-hydraulically controlled transmissions. The valve 20 includes a hollow cage 42 pierced by tank ports 52, clutch ports 54, and by pump ports 56. The... | 11/17/1998 |
| 5741004 | Shift valve for an automatic transmission used in automobiles Disclosed is a shift valve of a line pressure control system of an automatic transmission used in vehicles. The shift valve comprises a first input line having an orifice; a plug which communicates with the first input line through the orifice; a second i... | 04/21/1998 |
| 5651385 | Servo drive operated by a pressure medium A device for operating a servo drive having a positioning element controlled by a pressure medium. The device includes an electrical control unit generating a control signal based upon the position of the positioning element, a pre-control system connecte... | 07/29/1997 |
| 5611370 | Proportional variable force solenoid control valve and transmission fluid control device A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a movable valve for controlling the pressure of pressuriz... | 03/18/1997 |
