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| Number | Title | Issue Date |
| 8181932 | Normally open type piezoelectric element driven metal diaphragm control valve A control valve has a body that forms a valve chamber and a valve seat, a metal diaphragm installed inside the valve chamber and making contact with and departing from the valve seat, an actuator box fixed to the side of the body, a piezoelectric element installed i... | 05/22/2012 |
| 8162286 | Piezoelectric driven control valve Stable flow control is made possible even under high-temperature environments by relieving tensional force applied to a piezoelectric element when a piezoelectric actuator is retracted. Thus, a piezoelectric driven control valve includes: a body having a valve seat;... | 04/24/2012 |
| 8152136 | Polymer microvalve with actuators and devices The present invention relates to a microvalve having a valve plug, connecting legs, anchors and actuators, allowing the valve plug to move vertically to open or close the valve. The valve plug can contain magnetic materials, and be operated by an actuator. ... | 04/10/2012 |
| 8079568 | Valve with magnetic sealing element made of foam A valve is described having an inlet, an outlet, a sealing element and a device to generate a magnetic field, whereby the sealing element can be moved at least partially by the device and whereby the sealing element connects the inlet to the outlet in a fluid-conduc... | 12/20/2011 |
| 8056881 | Electrostatic actuation for management of flow in micro-total analysis systems (μ-TAS) and related method thereof The present invention relates to microfluidic devices, and in particular, flow management in such devices. In particular, the present invention provides an electrostatic valve for flow manipulation in a microfluidic device. The valve of the present invention sits on... | 11/15/2011 |
| 7971850 | Electroactive polymer devices for controlling fluid flow The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polyme... | 07/05/2011 |
| 7789371 | Low-power piezoelectric micro-machined valve A piezoelectric microvalve employs a valve element formed of hermetically sealed and opposed plates flexed together by a cross axis piezoelectric element. Large flow modulation with small piezoelectric actuator displacement is obtained by perimeter augmentation of t... | 09/07/2010 |
| 7762522 | Apparatus for the transmission of a deflection of an actuator An apparatus for the transmission of a deflection of an actuator, in particular of a piezoelectric actuator of an injection valve, comprises at least one first lever device which has a first transmission element which transmits the deflection of the actuator. In thi... | 07/27/2010 |
| 7726629 | Lifting apparatus and injection valve A lifting apparatus comprising a counter bearing (8) provided with a first recess (9), having a conical bearing surface (10), and an actuator unit comprising an actuator (6) whose axial extension is dependent upon an actuating signal. The... | 06/01/2010 |
| 7703742 | Electroactive polymer devices for controlling fluid flow The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polyme... | 04/27/2010 |
| 7665715 | Microvalve An improved microvalve is described. The microvalve is formed such that the walls of the microvalve are formed from a gel material. Typically, the microvalve includes open flow paths, often holes, through a gel layer. An electric field is applied in regions where fl... | 02/23/2010 |
| 7537197 | Electroactive polymer devices for controlling fluid flow The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polyme... | 05/26/2009 |
| 7469878 | Magnetostrictive valve assembly A magnetostrictive valve assembly includes a housing that defines a passage with a seat being formed therein. A magnetically-biased and axially-compressed magnetostrictive assembly slidingly fitted in the passage is configured as a hollow and open-ended conduit adap... | 12/30/2008 |
| 7444209 | Miniature cooling device A method for regulating temperature in an enclosure is disclosed. The method involves monitoring a component temperature inside the enclosure. When the component temperature reaches a threshold, the method injects a coolant into the enclosure. The method further inv... | 10/28/2008 |
| 7429317 | Electrokinetic device employing a non-newtonian liquid A non-Newtonian fluid is used in an electrokinetic device to produce electroosmotic flow therethrough. The nonlinear viscosity of the non-Newtonian fluid allows the electrokinetic device to behave differently under different operating conditions, such as externally ... | 09/30/2008 |
| 7428922 | Valve and position control using magnetorheological fluids Magnetorheological fluids, which solidify in response to a magnetic field, offer the ability to simplify many of the valves and control systems used downhole in the search for and production of oil and gas. They lessen the need for moving parts, provide solid-state ... | 09/30/2008 |
| 7404539 | Apparatus for the transmission of a deflection of an actuator An apparatus for the transmission of a deflection of an actuator, in particular of a piezoelectric actuator of an injection valve, comprises at least one first lever device which has a first transmission element which transmits the deflection of the actuator. In thi... | 07/29/2008 |
| 7360750 | Piezoelectric air valve and multiple-type piezoelectric air valve The air valve includes a valve body for controlling operations to open and close the communication between an air pressure chamber and an air outlet, a piezoelectric element for generating driving force in the form of displacements, and a displacement enlarging mech... | 04/22/2008 |
| 7351240 | Thermodynamically driven reversible infuser pump for use as a remotely controlled gastric band An implantable artificial sphincter system provides long-term adjustment via transcutaneous energy transfer (TET), minimizing invasive adjustment through adding or removing fluid via a syringe. An infuser device provides bi-directional fluid transfer via a flexible ... | 04/01/2008 |
| 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 |
| 7331563 | Valve with compact actuating mechanism The present invention relates to a valve having a base body with a passage opening, a movable valve member for closing and opening the passage opening and an actuating mechanism for moving the valve member in order to open the passage opening. The actuating mechanis... | 02/19/2008 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7322376 | Piezoelectric valve A piezoelectric valve has a flexural transducer accommodated in a valve housing and having a free ending cantilever operational section able to be deflected by electrical control. The operational section extends over two controlled valve openings lying on the same s... | 01/29/2008 |
| 7323960 | Electromagnetostrictive actuator An actuator includes an electromagnetostrictive element that has one end located on a front side and the other end located on a rear side. An output shaft penetrates the electromagnetostrictive element and is pressurized toward the rear side of the electromagnetostr... | 01/29/2008 |
| 7320457 | Electroactive polymer devices for controlling fluid flow The invention describes devices for controlling fluid flow, such as valves. The devices may include one or more electroactive polymer transducers with an electroactive polymer that deflects in response to an application of an electric field. The electroactive polyme... | 01/22/2008 |
| 7318576 | Bi-directional air valve for a tank system of a motor vehicle The invention includes a bi-directional air release valve for the tank system of a motor vehicle having an inlet opening, an outlet opening, a valve seat placed between the openings, and a closure element. In a closed position the closure element blocks the flow com... | 01/15/2008 |
| 7316383 | Valve mechanism, especially fuel injection valve for an internal combustion engine A fuel injection valve for an internal combustion engine, includes a valve element whose switched position depends at least indirectly on the switched state of a piezoelectric actuator that is acted on by a tubular, largely cylindrical prestressing device, which is ... | 01/08/2008 |
| 7310986 | Method for producing a compensation collar for an injection valve The positioning of the actuating drive in a fuel injector with a piezoactor (2) that is screwed into the housing (1) of the fuel injector is performed by applying a voltage (U) to the piezoactor (2) that corresponds to a given idle stroke (h), a... | 12/25/2007 |
| 7309056 | Dual pedestal shut-off valve Integrated micro-valve is formed to control fluid flow and pressure. The valve converts supplied energy to mechanical energy through a means for energy conversion resident above a flexible wall or membrane. In one embodiment a sealed cavity contains a fluid that exp... | 12/18/2007 |
| 7309944 | Piezoactuator and method for production of the piezoactuator A piezoactuator, includes at least one stacked piezoelement, with at least two electrode layers, arranged one over the other along a stacking direction of the piezoelement, at least one piezoelectric layer, arranged between two of the electrode layers and at least o... | 12/18/2007 |
| 7309027 | Fuel injector for internal combustion engines A fuel injector for injecting fuel that is at high pressure into a combustion chamber of an internal combustion engine has an injection valve member triggered by an actuator and a coupler chamber; the actuator acts on the injection valve member and the injection val... | 12/18/2007 |
| 7309032 | Dosing device for fluids, especially a motor vehicle injection valve An actuator (4) is connected, on one side, to a valve needle (3), and on the opposite side, to a hydraulic piston (6) pertaining to a hydraulic length compensator. A working chamber (5) is divided by a tight separating membrane (9)... | 12/18/2007 |
| 7299818 | Integrated microvalve and method for manufacturing a microvalve An integrated microvalve has a substrate, a first function layer applied to the substrate, and a second function layer applied to the first function layer, the first function layer being designed as a diaphragm in at least one valve area, the second function layer b... | 11/27/2007 |
| 7293581 | Latching micro-regulator A latching microregulator for regulating liquid flow on micro-scale levels comprises a substrate having an inlet port and an outlet port, a valve element defining a valve chamber for opening and closing the inlet port, and an actuator assembly for actuating the valv... | 11/13/2007 |
| 7284786 | Panels having active material based fold lines A panel having active material based segments, wherein the segments define a hinge location that can be selectively stiffened or folded on demand. The active material based segments include an active material such that activation of the active material by an activat... | 10/23/2007 |
| 7264222 | Modular valve assembly A valve assembly provides a holder cantileveredly attached to a boss on an end cap to axially dispose an actuator and a poppet on an axis with a valve seat formed in the end cap. The actuator is preferably a shape memory alloy actuator. The end cap may be placed in ... | 09/04/2007 |
| 7260932 | Shape memory alloy latching valve A shape memory activated fluid control pinch valve is disclosed. The valve may be normally open or normally closed. In various embodiments of the valve, the valve may be a latching pinch valve and may operate with magnetic assistance. ... | 08/28/2007 |
| 7246489 | Position control actuator system A position control actuator system includes a control element and first and second actuators. The first and second actuators are each comprised of magneto-active twinned material. The first actuator is configured to extend and drive the control element in a first di... | 07/24/2007 |
| 7240856 | Fuel injection control device This fuel injection control device includes: a fuel injection valve; a piezoelectric element or a solenoid which drives the fuel injection valve; a fuel pump which pressurizes fuel and supplies it to the fuel injection valve; a magnetostrictive element which drives ... | 07/10/2007 |
| 7237536 | Method for ascertaining the position of a mobile closing element of an injection valve In a method for ascertaining the position of a mobile closing element of an injector valve in a motor vehicle engine, in which the closing element is driven by a piezoelectric element for opening or closing the injection valve and a voltage signal allocated to an el... | 07/03/2007 |
