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| Number | Title | Issue Date |
| 6899314 | Bistable electromagnetic valve A bistable electromagnetic valve is proposed, which is to be used in refrigerant circuits. The valve can be produced at particularly low outlay and at the same time is reliably leaktight. This is achieved, according to the invention, in that the valve chamber (7 | 05/31/2005 |
| 6880570 | Vehicle actuator A linear three-port actuation valve for a vehicle has a valve seat member that is engaged with a valve body to a location that establishes a desired poppet stroke. The valve body defines a lower seat and the valve seat member defines an upper seat, and a poppet slid... | 04/19/2005 |
| 6877526 | Magnetic actuator and method A magnetic actuator includes a spool surrounded by a coil, a primary plate disposed at a first end of the spool, and a secondary plate disposed at a second end opposite the first end. A plunger is slidably disposed within respective annular portions defined by the s... | 04/12/2005 |
| 6874751 | Electromagnetic valve An electromagnetic valve (100) which can ensure a predetermined response behavior while sustaining a desired control performance with operation noise being suppressed even after operation over an extended time includes a plunger assembly (15) having a ... | 04/05/2005 |
| 6866063 | Low leak pressure control actuator A low leak pressure control actuator for, e.g., controlling pressure in an automatic transmission system, includes a poppet and a check ball slidably disposed within a housing. The poppet and check ball are movable between a de-energized configuration, plural partia... | 03/15/2005 |
| 6860293 | Variable pressure solenoid control valve A variable pressure solenoid (VPS) control valve. The VPS control valve includes an hydraulic section and a magnetic section. The hydraulic section includes a movable valve that receives a pressurized fluid and generates a control pressure, and the magnetic section ... | 03/01/2005 |
| 6840499 | Solenoid controlled valve of anti-lock brake system A solenoid-controlled valve of an anti-lock brake system includes: a modulator block with inflow and outflow ports; an accommodating part connecting the ports including a valve sheet having a valve seat and an outflow cavity connected with the outflow port; a filter... | 01/11/2005 |
| 6834845 | Solenoid valve for controlling a fuel injector A solenoid valve valve part for controlling a fuel injector in a fuel injection system has a valve needle, the open and closed positions of which may be controlled by the solenoid valve valve part. The solenoid valve valve part has a valve ball which rests on a valv... | 12/28/2004 |
| 6827102 | Three port-two way solenoid valve A valve assembly for use with a solenoid having a plunger being actuatable from a first position to a second position, comprising: a housing, comprising a first port, a second port and a third port and a central opening being defined by a plurality of first channels... | 12/07/2004 |
| 6802489 | Micro-fluidic valve with a colloidal particle element The present invention relates to the use colloidal particles to realize photonic and microfluidic devices. In particular embodiments, colloidal particles are used to realize microfluidic a two-way valve, three-way valve, check valve, three-dimensional valve, perista... | 10/12/2004 |
| 6767194 | Valves and pumps for microfluidic systems and method for making microfluidic systems The present invention relates to microfluidic systems, including valves and pumps for microfluidic systems. The valves of the invention include check valves such as diaphragm valves and flap valves. Other valves of the invention include one-use valves. The pumps of ... | 07/27/2004 |
| 6758419 | Fuel injector A fuel injector for fuel injection system of an internal combustion engine includes a solenoid coil, an armature acted upon in a closing direction by a return spring, and a valve-closure member frictionally connected to the armature. The valve-closure member, togeth... | 07/06/2004 |
| 6739576 | Microfluidic flow control device with floating element A microfluidic flow control device includes a fluidic chamber, a first and a second microfluidic channel, at least one sealing surface between the first and the second channels, and a floating element disposed within the chamber. The floating element is capable of i... | 05/25/2004 |
| 6719006 | Method for controlling pressure in a hydraulic circuit The invention is based on an apparatus (10) for regulating the pressure in a hydraulic circuit that comprises an electrically triggerable pressure-control valve (12), a receptacle device (14) in which the pressure-control valve (12) is in... | 04/13/2004 |
| 6708725 | Valve, particularly solenoid valve The invention concerns a valve, particularly a solenoid valve, with an inlet connection and an outlet connection, having between them a shut-off device with a valve seat and a closure member. In such a valve, it is endeavoured to obtain a small output with a simple ... | 03/23/2004 |
| 6682046 | Fuel injection valve A fuel injection valve includes, in part, a pipe, a fixed connector (fixed core), a movable core, a solenoid coil and a needle valve. In the fuel injection valve, a diameter of a fixed action surface of the fixed connector is made smaller than a movable a... | 01/27/2004 |
| 6679475 | Pressure control valve A pressure control valve serves to regulate the fuel pressure in a fuel system. The pressure control valve includes a valve housing, at least one inlet, at least one outlet, and at least one prestressed, electrically actuatable, and at least regionally ba... | 01/20/2004 |
| 6679231 | Fuel injector assembly for dry fuels A fuel injector system according to the present invention has a housing (52) having a valve assembly (56) disposed therein. A solenoid (54) is also disposed within the housing (52). A valve assembly (56) is disposed between an inlet port (82) and an outle... | 01/20/2004 |
| 6666231 | Solenoid valve The invention relates to a solenoid valve with an inlet connection and an outlet connection, having between them a blocking device with a valve seat, a closure member and an armature, which influences a position of the closure member in relation to the va... | 12/23/2003 |
| 6619616 | Solenoid valve device In a solenoid valve device, a housing has a stopper formed on an inner wall of a fluid passage around an axial end of an accommodation bore. A valve seat member fixed to an inner circumferential wall of the fluid passage has a through-hole causing an inpu... | 09/16/2003 |
| 6598852 | Solenoid valve A solenoid valve includes a coil assembly accommodated in a solenoid housing having an end wall at one end thereof. A stationary core is magnetically coupled to the end wall and inserted into one end of a center bore, and a movable core opposed to the sta... | 07/29/2003 |
| 6588857 | Solenoid valve for brake systems A solenoid valve for brake systems is disclosed. This solenoid valve is preferably used as an outflow control NC-type solenoid valve mounted on the oil return line of an electro-hydraulic brake system (EHB). This solenoid valve comprises a hollow valve ho... | 07/08/2003 |
| 6554591 | Micropump including ball check valve utilizing ceramic technology and method of fabrication A multilayer ceramic micropump including a monolithic ceramic package formed of a plurality of ceramic layers defining therein an integrated first ball check valve, and a second ball check valve in microfluidic communication with the first ball check valv... | 04/29/2003 |
| 6435472 | Proportional variable force solenoid control valve with armature damping Proportional variable force solenoid valve for controlling the 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, a... | 08/20/2002 |
| 6418967 | Pressure regulating valve Pressure regulating valve comprising a connection for a pressure line (P), a connection for a working line (A), a connection for an outlet line (T) communicating with the ambient pressure and at least two diaphragm stages with defined or definable drag, t... | 07/16/2002 |
| 6408824 | Device for regulating the delivery pressure of a pump, for example, for feeding fuel to an internal combustion engine The device includes a solenoid valve having a supply conduit communicating with the delivery of the pump, a drain conduit, an electromagnet energizable to control an armature controlling a shutter, and reducing means for reducing disturbance in the delive... | 06/25/2002 |
| 6390117 | Directional seat valve A directional seat valve has a valve housing having a pressure connector for supplying pressure medium to the valve housing, a tank connector for returning pressure medium to a pressure medium tank, and a working connector for supplying pressure medium to... | 05/21/2002 |
| 6363920 | Proportional solenoid for purging fuel vapors An improved regulator valve 10 for controlling the purging of fuel vapors collected in a canister 12 and an evaporative emission control system into an intake system 18 of an internal combustion engine employs a solenoid valve assembly 40 with an armature... | 04/02/2002 |
| 6345803 | Piezoelectric fluid control valve The piezoelectric element laminate 20 which expands due to application of a voltage is disposed between a diaphragm valve 11 applied with elastic force in a valve opening direction and a valve spring mechanism 25, a distortion amount a of the piezoelectri... | 02/12/2002 |
| 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 |
| 6336470 | Directional seat valve A directional seat valve has a valve housing having a pressure connector for supplying a pressure medium to the valve housing, a tank connector for returning the pressure medium to a pressure medium tank, and a working connector for supply the pressure me... | 01/08/2002 |
| 6328065 | Electromagnetic hydraulic valve In a proposed electromagnetic pressure regulating valve (10, 10a), the functional characteristics of a pressure regulating valve are combined with those of a switching valve. The pressure regulating valve (10, 10a) can be used in particular to control aut... | 12/11/2001 |
| 6279872 | Quick-acting valve A valve has a chamber (11) in a housing (10), in which the valve seat (17) is closed by a valve body (19). The valve seat (17) is supported by an actuator (15) which is capable of axially expanding and contracting. In response to an actuating signal the a... | 08/28/2001 |
| 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 |
| 6184766 | Solenoid valve A solenoid valve is composed of a bobbin wound with a coil, and a housing separated from the bobbin and having an input port, an output port and a discharge port. The bobbin incorporating the plunger and the housing incorporating the ball for switching ov... | 02/06/2001 |
| 6161577 | Solenoid assembly for an automatic transmission of a motor vehicle A solenoid assembly for an automatic transmission of a motor vehicle. The solenoid assembly includes a housing, a valve, an armature and an electromagnetic device. The valve is mounted within the housing. The valve is operative in a vented state and a non... | 12/19/2000 |
| 6152422 | Electromagnetic directional control valve An electromagnetic directional control valve has a magnetic part including a coil body, a coil arrangement of the coil body, a magnetic pole mounted on the coil body, a flux guiding element, and an armature, and a hydraulic part provided with passages and... | 11/28/2000 |
| 6142394 | Valve seat for a ball and pin valve member in a hydraulically actuated fuel injector A hydraulically actuated device comprises a device body defining an inlet passage separated from an outlet passage by a first valve seat and a second valve seat, and a control passage that opens into an area between the first valve seat and the second val... | 11/07/2000 |
| 6138986 | Solenoid valve for a fuel injection system for a vehicle A 2/2-way solenoid valve which is open when it is without current and is inserted into a diesel fuel-carrying line to a high-pressure pump. The solenoid valve functions as an emergency shutoff or when the device is tested by supplying the solenoid valve w... | 10/31/2000 |
| 6138713 | Solenoid assembly for an automatic transmission of a motor vehicle and related method A solenoid assembly for an automatic transmission of a motor vehicle. The solenoid assembly includes a housing having a core opening passing vertically therethrough. A valve is mounted within the housing. The valve is operative in a vented state and a non... | 10/31/2000 |
