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| Number | Title | Issue Date |
| 8106567 | Switched mode power supply A switched mode power supply is provided. The switched mode power supply includes a transformer, which includes at least one primary winding connected to a DC voltage via a switching element and a secondary winding connected to a load via a rectifier circuit includi... | 01/31/2012 |
| 8097999 | Piezoelectric actuator Piezoelectric actuators having a piezoelectric layer in which a cantilever portion is formed are disclosed. In one embodiment, an actuator includes a support layer and a piezoelectric layer. The piezoelectric layer may include a supported portion formed on the suppo... | 01/17/2012 |
| 8072121 | Electroactive polymer transducers biased for optimal output Electroactive polymer transducers are disclosed. They are biased in a manner that provides for increased force and/or stroke output, thereby offering improved work potential and power output capacity. The biasing may offer additional or alternate functional advantag... | 12/06/2011 |
| 8044556 | Highly efficient, charge depletion-mediated, voltage-tunable actuation efficiency and resonance frequency of piezoelectric semiconductor nanoelectromechanical systems resonators A nanoelectromechanical systems (NEMS) device and method for using the device provide for a movable member that includes a region of low conductivity over which an electric field is developed. A region width is within a factor of ten (10) of a thickness of the NEMS ... | 10/25/2011 |
| 8022599 | Actuator An actuator includes: a substrate; a fixed electrode provided on a major surface of the substrate; a first dielectric film provided on the fixed electrode, and made of crystalline material; a movable beam opposed to the major surface, and held above the substrate wi... | 09/20/2011 |
| 7982368 | Polymer actuator and device equipped with polymer actuator Provided is a polymer actuator including: an electrolyte layer; and a pair of electrodes provided on both surfaces of the electrolyte layer in the thickness direction, wherein the polymer actuator is deformed when a voltage is applied across the pair of electrodes, ... | 07/19/2011 |
| 7960900 | Assembly of a microswitch and of an acoustic resonator The invention relates to a device consisting of an electromechanical microswitch comprising mobile beam (2). According to the invention, at least part (14) of the beam forms the piezoelectric element of a piezoelectric actuator. ... | 06/14/2011 |
| 7939993 | Micromechanical Hf switching element and method for the production thereof The present invention relates to a micromechanical HF switching element, in which a freestanding movable element is situated above a metallic surface on a substrate in such way that it is drawn to the metallic surface, to which a dielectric layer is applied, by appl... | 05/10/2011 |
| 7898153 | Actuator Actuator comprising: a) a support beam b) a first means for placing said support beam in compression without causing flexure of said support beam; c) a first layer of material adhered to a first su... | 03/01/2011 |
| 7888846 | Actuator When an actuator is driven, a stationary element continuously generates a pressing force for spreading in a radial direction such that the stationary element is relatively retracted into movable elements positioned at both ends of the stationary element. As a result... | 02/15/2011 |
| 7847469 | Micro-cantilever A micro-cantilever of a simple structure and capable of obtaining a larger displacement at a low voltage including a plate-like piezoelectric substrate having electrode films as an upper electrode and a lower electrode formed on both surfaces thereof, a plate-like r... | 12/07/2010 |
| 7816841 | Piezoelectric driven MEMS apparatus and portable terminal A piezoelectric driven MEMS apparatus includes: a substrate; a support part provided on the substrate; a fixed electrode provided on the substrate; and an actuator having a first electrode film, a piezoelectric film formed on the first electrode film, and a second e... | 10/19/2010 |
| 7804227 | Tear resistant electroactive polymer transducers Described herein are several solutions that increase transducer lifetime by reducing or preventing tear propagation in a compliant electroactive polymer. One solution couples a compliant tear resistant treatment to a transducer proximate to an edge portion of the el... | 09/28/2010 |
| 7772745 | MEMS device with low operation voltage, large contact pressure force, and large separation force, and portable communication terminal with the MEMS device It is made possible to provide a MEMS device that has a low operation voltage, a large contact pressure force, and a large separation force. A MEMS device includes: a substrate; a supporting unit that is provided on the substrate; a fixed electrode that is provided ... | 08/10/2010 |
| 7723901 | Vibrating gyrosensor and vibrating element A vibrating gyrosensor includes a support substrate on which a wiring pattern having a plurality of lands is formed, and a vibrating element mounted on a surface of the support substrate. The vibrating element includes a base part having a mounting surface on which ... | 05/25/2010 |
| 7663294 | Enhanced displacement piezoelectric motor A mechanical energy generating apparatus is provided. The apparatus includes a shape changing flexure beam connected at opposing distal ends to first lever arms of a pair of opposing tilt connectors. The apparatus additionally includes a bias beam connected at oppos... | 02/16/2010 |
| 7659654 | Piezoelectrics oscillator, sensor, and multi-sensor A piezoelectric oscillator includes: a piezoelectric substrate having at least a vibrating part and a base part; an excitation electrode formed on the vibrating part; and an oscillation circuit formed on the base part. In the piezoelectric oscillator, the oscillatio... | 02/09/2010 |
| 7656074 | Voice coil motor device for positioning A voice coil motor device for positioning is disclosed. The voice coil motor device for positioning includes a fixed element, a moving element and a connector. The moving element is movably disposed on the fixed element. One end of the connector is connected with th... | 02/02/2010 |
| 7656073 | Driving device A driving device, small in size and light in weight, is to stabilize the position of a surface-deforming element while reducing the effect of gravity thus enabling stable transfer and positioning. The driving device is structured to hold a movable member integrated ... | 02/02/2010 |
| 7592740 | Miniature drug delivery pump with a piezoelectric drive system A drug delivery pump which uses a piezoelectric drive system to advance a small syringe piston to deliver a liquid drug and a method thereof are disclosed. The present invention has a cost and size advantage compared to traditional pumps and is a very compact and po... | 09/22/2009 |
| 7592739 | Tunable bulk acoustic wave MEMS micro-resonator A suspended film bulk acoustic micro-resonator that includes a beam made of a piezoelectric material fixed to a support and sandwiched between excitation electrodes. The resonator also includes a mechanism modifying limiting conditions of the resonator composed of t... | 09/22/2009 |
| 7567021 | Monomorph type piezoelectric/electrostrictive device and method for manufacturing the same A monomorph type piezoelectric/electrostrictive device includes a piezoelectric/electrostrictive body, which is composed of a non-lead based piezoelectric/electrostrictive crystalline body containing at least Nb, Ta, and one or more types of alkali metal element, wh... | 07/28/2009 |
| 7550901 | Piezoelectric fan, cooling device containing same, and method of cooling a microelectronic device using same A piezoelectric fan includes a piezoelectric actuator patch (110, 210, 310) and a blade (120, 220, 320) attached to the piezoelectric actuator patch. The blade has a hole (121, 127, 221) in it, and a door (122, 128, 222) is adjacent to th... | 06/23/2009 |
| 7545081 | Piezoelectric RF MEMS device and method of fabricating the same A piezoelectric RF micro electro mechanical system (MEMS) device and a method of fabricating the same are provided, in which the RF MEMS device is driven upward at a low voltage based on a piezoelectric effect. The piezoelectric RF MEMS device includes an upper subs... | 06/09/2009 |
| 7521840 | High-performance electroactive polymer transducers Electroactive polymer constructions that convert electrical energy to mechanical energy and vice versa are disclosed. The subject transducers (actuators, generators, sensors or combinations thereof) share the requirement of a frame or fixture element used in preload... | 04/21/2009 |
| 7492076 | Electroactive polymer transducers biased for increased output Electroactive polymer transducers are disclosed. They are biased in a manner that provides for increased force and/or stroke output, thereby offering improved work potential and power output capacity. The biasing may offer additional or alternate functional advantag... | 02/17/2009 |
| 7479726 | MEMS device using an actuator A MEMS includes an actuator, first and second electrodes, and a fixed shaft. The actuator is provided above a substrate. The actuator has one end and the other end. The one end of the actuator is coupled relative to the substrate. The first electrode is arranged at ... | 01/20/2009 |
| 7477003 | Bimorph element, bimorph switch, mirror element, and method for manufacturing these There is provided a bimorph element including a silicon oxide layer, a high expansion coefficient layer that is formed on the silicon oxide layer and has a thermal expansion coefficient higher than a thermal expansion coefficient of the silicon oxide layer, and a de... | 01/13/2009 |
| 7471031 | Piezoelectric MEMS element and tunable filter equipped with the piezoelectric MEMS element In a MEMS type variable capacity having a piezoelectric driving mechanism, a movable head having movable electrodes are arranged thereon, stationary electrodes is positioned to face the movable electrodes, and a piezoelectric driving beam structure is joined to the ... | 12/30/2008 |
| 7466065 | Bimorph switch, bimorph switch manufacturing method, electronic circuitry and electronic circuitry manufacturing method A bimorph switch electrically connecting a traveling contact and a fixed contact. The switch comprises a substrate having a front face, a rear face, and a through hole penetrating from the front face to the rear face; a fixed contact extending from an edge portion o... | 12/16/2008 |
| 7459835 | Loading-protected bending microactuator in additive suspensions A microactuated disk drive suspension for supporting a slider at a disk includes a load beam extending in a plane and having on a common axis a base section adapted for mounting to an actuator, a spring section and a beam section carrying a flexure and the slider th... | 12/02/2008 |
| 7453186 | Cantilever driven transduction apparatus An electromechanical transducer which provides orthogonal translated motion to a piston through an attached lever arm connected to and driven by at least two electromechanical cantilever members, mounted on a separate inertial tail mass, and which under full array l... | 11/18/2008 |
| 7446457 | Semiconductor device using piezoelectric actuator formed by use of MEMS technique A semiconductor device includes beam portions and piezoelectric portions. Each of the beam portions is formed to extend in a first direction with one end fixed at a substrate by use of a supporting member and warped by residual stress with the supporting member set ... | 11/04/2008 |
| 7443078 | Piezo action applied This invention expands functions possible with electric equipment using charge contorting Piezo technology. We replace engines and motors with Piezo units. These power electric vehicles using nudging by Piezo strips to turn shafts or axles holding propellers or whee... | 10/28/2008 |
| 7427819 | Film-bulk acoustic wave resonator with motion plate and method An apparatus and method for measuring a target environmental variable (TEV) that employs a film-bulk acoustic resonator with motion plate. The film-bulk acoustic resonator (FBAR) includes an acoustic reflector formed in an FBAR wafer and a surface. A first electrode... | 09/23/2008 |
| 7420320 | Piezoelectric thin film device and method for manufacturing the same A piezoelectric thin film device includes an amorphous metal film disposed on a substrate and a piezoelectric film disposed on the amorphous metal. One of crystal axis of the piezoelectric film is aligned in a direction perpendicular to a surface of the amorphous me... | 09/02/2008 |
| 7414351 | Energy harvesting device manufactured by print forming processes Embodiments of making an energy harvesting device are described. In one embodiment, a case and integrated piezoelectric cantilever to harvest vibration energy from an environment being sensed is produced via a print forming method injection molding method. The canti... | 08/19/2008 |
| 7406757 | Method of manufacturing liquid ejection head The method manufactures a liquid ejection head comprising: a plurality of nozzles which eject liquid; a plurality of pressure chambers which are connected to the nozzles, respectively; a diaphragm which forms wall faces of the pressure chambers; and piezoelectric el... | 08/05/2008 |
| 7400078 | Vibrating gyrosensor A vibrating gyrosensor includes a support substrate on which a wiring pattern having a plurality of lands is formed, and vibrating elements mounted on a surface of the support substrate, wherein at least two vibrating elements are mounted on the support substrate, f... | 07/15/2008 |
| 7394610 | Acceleration sensor and magnetic disk device using the same An acceleration sensor comprises a vibrating element 2 formed by arranging conductor films 26 and 29 on outer main surfaces of piezoelectric substrates 21 and 22 in a rectangular parallelepiped shape, and first supporting members | 07/01/2008 |
