Shear Or Torsional Type Patents (Class 310/333)
  • Patent number: 11313713
    Abstract: The present invention provides a sensor assembly for a magnetostrictive transmitter. The sensor assembly includes a holder, a substrate, a piezoelectric crystal, and a magnetostrictive wire. The piezoelectric crystal includes an inner surface. The piezoelectric crystal further includes a groove extending in the inner surface. A portion of the magnetostrictive wire is operable to be receive in the groove in the inner surface of the piezoelectric crystal.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: April 26, 2022
    Assignee: Clark Reliance LLC
    Inventors: Syed Sultan, Steven R. McGuigan, Dennis M. Barrett
  • Patent number: 11215815
    Abstract: A MEMS micro-mirror device includes, a single package; a first mirror and second mirror, wherein at least one of the mirrors is configured to oscillate along an oscillation axis; wherein both mirrors are located within the single package and are arranged such that as the at least one mirror oscillates, the light incident on the first micro-mirror can be deflected to the second mirror.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: January 4, 2022
    Assignee: GOOGLE LLC
    Inventors: Nicolas Abele, Faouzi Khechana, Lucio Kilcher
  • Patent number: 11139796
    Abstract: A crystal vibration element that includes a crystal piece that has a prescribed crystal orientation, and a first direction and a second direction in a plan view thereof; and excitation electrodes that are respectively provided on front and rear surfaces of the crystal piece in order to excite a thickness shear vibration in the crystal piece upon application of an alternating electric field. A vibration distribution of the crystal piece has a vibration region that extends in a band-like shape in the second direction of the crystal piece and non-vibration regions that are adjacent to opposed sides of the vibration region in the first direction of the crystal piece.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: October 5, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Toru Kidu, Takashi Hase, Takeshi Kamada, Hiroaki Kaida, Shigeaki Sugimura
  • Patent number: 10730742
    Abstract: An actuator (1) is provided with: a movable part (120); a support part (110, 210) which supports the movable part; and a plurality of torsion bars (230) (i) each of which connects the movable part and the support part along a long direction such that the movable part is capable of swinging around a rotational axis which is along the long direction and (ii) which are arranged along a short direction; the farther each torsion bar is from the rotational axis, the smaller a spring constant of each torsion bar is.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: August 4, 2020
    Assignees: PIONEER CORPORATION, PIONEER MICRO TECHNOLOGY CORPORATION
    Inventors: Kenjiro Fujimoto, Yuuichi Yamamura
  • Patent number: 10429607
    Abstract: An apparatus having an optical structure, ridges and an electrostatic actuator with a cantilever electrode is described, wherein the ridges connect the optical structure to a supporting structure and the electrostatic drive is implemented to deflect the optical structure.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: October 1, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Frank Wippermann, Andreas Reimann, Nicolas Lange, Andreas Braeuer
  • Patent number: 10422641
    Abstract: A gyroscope includes a cylindrical shell having a first end and a second end, a pedestal, a plurality of spokes coupled from the pedestal to the second end of the cylindrical shell, and a plurality of tuning tabs extending from one or more of the plurality of spokes.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: September 24, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Raviv Perahia, Deborah J. Kirby, Logan D. Sorenson, Richard J. Joyce
  • Patent number: 10359596
    Abstract: An apparatus having an optical structure, ridges and an electrostatic actuator is described, wherein the ridges connect the optical structure to a supporting structure and the electrostatic drive is implemented to deflect the optical structure.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: July 23, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Frank Wippermann, Andreas Reimann, Nicolas Lange, Andreas Braeuer
  • Patent number: 10293315
    Abstract: The invention relates to a magnetic stirrer (1) having a stirrer drive (2), a heating plate (3) serving as a surface on which a stirring vessel (4) is positioned, and a stirring rod (6) which can be introduced into the stirring vessel (4), can be or is driven by the stirrer drive (2) and comprises a magnet (6a), the stirring rod (6) and/or the magnet (6a) having and/or containing at least one SAW sensor (7) (surface acoustic wave sensor).
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 21, 2019
    Assignee: IKA—WERKE GMBH & CO. KG
    Inventors: Erhard Eble, Thomas Hensle
  • Patent number: 10199959
    Abstract: The piezoelectric actuator of the present invention has at least one ceramic component. The ceramic component has an output surface and two driving surfaces. The ceramic component has a height and the output surface is rectangular in shape, wherein the length of the short axis side of the output surface is shorter than the height. Therefore, when a pulse wave input voltage is applied on the driving surfaces, the output surface generates an elliptical motion.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: February 5, 2019
    Assignee: CHUNG-YUAN CHRISTIAN UNIVERSITY
    Inventors: Yung Ting, Sheuan-Perng Lin, Hao-Ping Lin
  • Patent number: 10040279
    Abstract: An ink jet head includes first side walls including two piezoelectric elements, second side walls, a first electrode, a second electrode, an ink chamber containing conductive ink, and a control unit. The second side walls alternate with the first side walls to provide side surfaces for driving pressure chambers and dummy pressure chambers. On one of the first side walls, the first electrode is on the side wall surface of a driving pressure chamber and a second electrode is on the side wall surface of a dummy pressure chamber. The control unit applies a voltage having a first waveform to the first electrode, and a voltage having a second waveform, a portion of which is inverted with respect to the first waveform, to the second electrode to cause ink to be ejected, and cause the second electrode to electrically float such that ink is not ejected.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: August 7, 2018
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Teruyuki Hiyoshi, Noboru Nitta, Syunichi Ono
  • Patent number: 9788404
    Abstract: An apparatus for producing a plasma including a control circuit which is electrically connected to a piezoelectric transformer in order to excite the piezoelectric transformer. A hand-held device that uses the apparatus. The piezoelectric transformer is constructed of several layers. The control circuit is implemented on a circuit board, and the piezoelectric transformer is held over the circuit board by means of a region of a first end. A high voltage is applied to a second free end of the piezoelectric transformer. The plasma is produced at atmospheric pressure.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: October 10, 2017
    Assignees: EPCOS AG, reylon plasma GmbH
    Inventors: Stefan Nettesheim, Dariusz Korzec, Dominik Burger, Georg Kuegerl, Markus Puff, Florian Hoppenthaler
  • Patent number: 9728708
    Abstract: Among other things, piezoelectric materials and methods of their manufacture are described; particularly methods of forming regions of varying crystal structure within a relaxor piezoelectric substrate. Such methods may including heating the piezoelectric substrate above the transition temperature and below the Curie temperature such that a first phase transition occurs to a first crystal structure; rapidly cooling the piezoelectric substrate below the transition temperature at a cooling rate that is sufficiently high for the first crystal structure to persist; and applying an electric field through one or more selected regions of the piezoelectric substrate, such that within the one or more selected regions, a second phase transition occurs and results in a second crystal structure.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 8, 2017
    Assignee: DALHOUSIE UNIVERSITY
    Inventors: Philip P. Garland, Robert B. A. Adamson, Andre B. Bezanson, Jeremy A. Brown
  • Patent number: 9638671
    Abstract: A method for ultrasonic guided wave defect detection in a structure is disclosed. The method includes driving a plurality of transducers to cause guided waves to be transmitted in the structure in a predetermined direction or focused at a predetermined focal point, receiving at least one reflected guided wave signal, and generating image data of the structure based on the at least one reflected guided wave signal. Processed image data are generated by performing at least one of baseline image subtraction or image suppression on the image data, and a location of at least one possible defect in the structure is identified based on the processed image data.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 2, 2017
    Assignee: FBS, Inc.
    Inventors: Cody Borigo, Steven E. Owens, Joseph L. Rose
  • Patent number: 9605995
    Abstract: The embodiments relate to the use of one or more phase lock loops (PLL's) for detecting wobble of a surface upon which a computing device is set. The PLL's can be configured to lock onto an exponentially-damped sinusoid output from an accelerometer in order to differentiate between surface-induced movement and direct human-induced movement of the computing device. Reduced latency in wobble detection can be achieved by implementing the PLL in software and using multiple PLL's per accelerometer axis. Further reduction in the latency of wobble detection can be achieved by seeding the phase of an oscillator signal generated by each PLL in order to improve phase estimates when attempting to lock a PLL onto the accelerometer output.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: March 28, 2017
    Assignee: Apple Inc.
    Inventor: James S. Ismail
  • Patent number: 9568148
    Abstract: A flexible portable device holding and cradling apparatus that overcomes limitations of the prior art by providing a flexible portable device mounting apparatus provided by a frame that is structured for being coupled to an external mounting device, the frame having a mounting surface and a plurality of first and second passages provided adjacent to each of opposing side edges thereof; a plurality of substantially resiliently flexible clamps each having a leg portion, a finger portion extended from the leg portion, and a substantially resiliently flexible urging portion coupled between the leg portion and the finger portion; and coupling means operating between different ones of the first and second passages of the frame and the leg portion of each of different ones of the clamps for coupling the leg portion relative to the mounting surface.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: February 14, 2017
    Inventor: Jeffrey D. Carnevali
  • Patent number: 9513729
    Abstract: Embodiments provide the energy recovery system capable of converting mechanical energy of a touch input to a touch screen panel into electrical energy and storing the converted electrical energy. The energy recovery system may include a touch screen panel including a piezoelectric material, an energy recovery device recovering electrical energy generated by the piezoelectric material, and an electrical energy storage device storing the recovered electrical energy.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: December 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Beom-Shik Kim, Hui Nam, Jun-Il Kwon
  • Patent number: 9508917
    Abstract: This invention concerns a piezoelectric energy harvesting device or actuator comprising a piezoelectric material (12) on a substrate (14). The piezoelectric material is divided into a plurality of discrete regions to provide a plurality of piezoelectric elements (16) on the substrate which are electrically insulated from each other. The elements are preferably disposed along the length of a cantilevered beam. The piezoelectric layer may be divided or further divided with an insulating gap extending in the longitudinal direction of the beam for energy harvesting in torsional mode(s) of beam vibration as well as bending modes.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 29, 2016
    Assignee: ALTENERGIS PLC
    Inventors: Lijie Li, Gerard Anthony Ronan
  • Patent number: 9425712
    Abstract: The strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear that is disposed coaxially therein and is flexible in the radial direction, and a wave generator that is disposed coaxially inside the externally toothed gear. The flexible externally toothed gear is bent in the radial direction by the wave generator and meshes with the rigid internally toothed gear in sections. When the position of meshing of the rigid internally toothed gear with the flexible externally toothed gear moves in the circumferential direction as the wave generator rotates, a relative rotation that corresponds to the difference in number of teeth of the two gears is generated between the two gears. A vibration-powered generator is disposed on the flexible externally toothed gear. The vibration-powered generator is provided with a piezoelectric element.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 23, 2016
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventor: Yusuke Shibamoto
  • Patent number: 9217642
    Abstract: A vibrating gyroscope includes a frame body, first and second exciting members, detection members that detect vibration of the frame body, a first mass adding member, a second mass adding member, a first connecting member, and a second connecting member. The frame body includes first and second vibrating portions, first and second coupling portions, a first supporting portion, and a second supporting portion. The first and second coupling portions couple the first and second vibrating portions. The first supporting portion extends towards the second coupling portion from the first coupling portion. The second supporting portion extends towards the first coupling portion from the second coupling portion. The first and second exciting members and excite the first and second vibrating portions, respectively. The first and second mass adding members are provided at outer sides of the frame body, and are connected to the first and second vibrating portions, respectively.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: December 22, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hironari Yamamoto
  • Patent number: 9151733
    Abstract: A sensor array for non-destructively monitoring a structure to detect a critical structural event. The sensor array includes at least one discrete AE sensor node for producing an electrical signal in response to a structural event and at least one shear wave sensor assembly. The shear wave sensor assembly includes at least one shear wave sensor. A gate module is connected to the at least one discrete AE sensor node and to the at least one shear wave sensor assembly, whereby the gate module is adapted to pass through the electrical signal from the at least one discrete AE sensor node in response to a pre-determined signal from the at least one shear wave sensor assembly. The sensor array may further include a signal processing module for receiving and processing the discrete AE sensor output signal. In addition, a data collection system may be located downstream of the signal processing module.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: October 6, 2015
    Assignee: North Carolina A&T State University
    Inventor: Mannur J. Sundaresan
  • Patent number: 9030078
    Abstract: A vibrating element includes a piezoelectric substrate having an excitation section adapted to excite a thickness-shear vibration, and provided with a step section in each of side surfaces on both ends, and a peripheral section having a thickness smaller than a thickness of the excitation section, and the peripheral section has at least one projection section disposed on both principal surfaces in an area where a vibratory displacement when the excitation section excites a vibration is sufficiently attenuated.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 12, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Il, Matsutaro Naito
  • Patent number: 8980010
    Abstract: In a piezoelectric device, a first electrode and a second electrode are disposed to be opposed to each other on plate surfaces of the piezoelectric device, a first electrode plane of the piezoelectric device is fixedly bonded to a plate surface of a vibrating plate, a piezoelectric material forming the piezoelectric device is polarized in a direction parallel to the first electrode plane, the piezoelectric device is fixed to a base through a second electrode plane of the piezoelectric device, and the piezoelectric device generates a thickness-shear vibration with the fixed second electrode plane being a reference plane. The piezoelectric vibration generated by the piezoelectric device generates a flexural vibration in the vibrating plate, to thereby remove dust adhering to a surface of the vibrating plate.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Ifuku, Tatsuo Furuta, Hiroshi Saito, Kenichi Takeda
  • Patent number: 8966704
    Abstract: In a piezoelectric device, a first electrode and a second electrode are disposed to be opposed to each other on plate surfaces of the piezoelectric device, a first electrode plane of the piezoelectric device is fixedly bonded to a plate surface of a vibrating plate, a piezoelectric material forming the piezoelectric device is polarized in a direction parallel to the first electrode plane, the piezoelectric device is fixed to a base through a second electrode plane of the piezoelectric device, and the piezoelectric device generates a thickness-shear vibration with the fixed second electrode plane being a reference plane. The piezoelectric vibration generated by the piezoelectric device generates a flexural vibration in the vibrating plate, to thereby remove dust adhering to a surface of the vibrating plate.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Ifuku, Tatsuo Furuta, Hiroshi Saito, Kenichi Takeda
  • Patent number: 8910370
    Abstract: A universal air bubble detector allows for use with a variety of sizes and types of tubing. The detector maintains proper alignment of a sensor emitter and receiver with different sizes of tubing. The detector may be mounted on existing equipment or may be used to monitor a tubing at any position along the tubing, and may operate in a stand alone mode or in combination with existing equipment.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: December 16, 2014
    Assignee: Zevex, Inc.
    Inventors: Timothy A. Riley, Mark D. Stringham, David H. Blaine, Frank A. Crandall, Philip N. Eggers
  • Patent number: 8910356
    Abstract: A method of forming an electrical component is provided. The method comprises preparing a subassembly by electrically connecting an integrated circuit to a flexible circuit; and attaching the subassembly to a multilayer ceramic capacitor having a mounting surface with a curvature deviation exceeding 0.008 inches per inch.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: December 16, 2014
    Assignee: Kemet Electronics Corporation
    Inventors: Michael S. Randall, Chris Wayne, John McConnell
  • Patent number: 8884494
    Abstract: A piezoelectric actuator includes a fixed body, a movable body arranged to face the fixed body, and a plurality of piezoelectric elements arranged between the fixed body and the movable body and operating in a shearing mode. Each piezoelectric element having one end fixed to the fixed body and another end contacting the movable body, wherein a direction of polarization of each of the plurality of piezoelectric elements is different from each other.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: November 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hwan-soo Suh
  • Patent number: 8845555
    Abstract: The present invention provides a sensor system for measuring an elastic modulus and a shear modulus and a method for using the sensor system to evaluate a tissue by determining the presence of and/or characterizing abnormal growths. The method involves applying a set of forces of different magnitudes to one or more locations of tissue, detecting the corresponding displacements due to said applied forces, determining the forces acting on those locations of tissue which are a combination of forces from the applied voltages and the countering forces from tissue deformation, obtaining the elastic modulus and/or shear modulus for a plurality of locations, and determining abnormal growth invasiveness, malignancy or the presence of a tumor from said elastic and/or shear moduli.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: September 30, 2014
    Assignees: Drexel University, Philadelphia Health & Education Corporation
    Inventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks
  • Publication number: 20140285067
    Abstract: This invention concerns a piezoelectric energy harvesting device or actuator comprising a piezoelectric material (12) on a substrate (14). The piezoelectric material is divided into a plurality of discrete regions to provide a plurality of piezoelectric elements (16) on the substrate which are electrically insulated from each other. The elements are preferably disposed along the length of a cantilevered beam. The piezoelectric layer may be divided or further divided with an insulating gap extending in the longitudinal direction of the beam for energy harvesting in torsional mode(s) of beam vibration as well as bending modes.
    Type: Application
    Filed: November 5, 2012
    Publication date: September 25, 2014
    Inventors: Lijie Li, Gerard Anthony Ronan
  • Patent number: 8829766
    Abstract: An acoustic wave resonator device comprising a resonant layer that comprises a series of side-by-side areas of first and second dielectric materials. In one embodiment the first dielectric material is a piezoelectric, in particular the first dielectric material can be a piezoelectric and the second dielectric material can be non-piezoelectric. In another embodiment, the first dielectric material is a piezoelectric of first polarity and the second dielectric material is a piezoelectric of opposite polarity or different polarity. Where needed, the resonant layer is supported on a reflector composed of series of layers of high acoustic impedance material(s) alternating with layers of low acoustic impedance material(s). For example, the reflector comprises AlN, Al2O3, Ta2O5, HfO2 or W as high impedance material and SiO2 as low impedance material.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: September 9, 2014
    Assignee: Epcos AG
    Inventors: Evgeny Milyutin, Paul Muralt
  • Publication number: 20140246953
    Abstract: A vibration-type driving device includes a vibrator including an electro-mechanical transducer and an elastic portion supported by a shaft, and a rotor the position of which relative to the vibrator changes. The rotor includes a first rotor having a threaded portion engaging with a first threaded portion formed on the elastic portion, and a second rotor having a threaded portion engaging with a second threaded portion formed on the shaft. The first rotor and the second rotor are configured to be driven integrally with each other, with a spring member between the first rotor and the second rotor.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 4, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Akira Shimada
  • Patent number: 8797830
    Abstract: An explosion-proof system for generating acoustic energy. An exemplary embodiment of the system includes a main housing defining an open housing space and an opening. A cover structure is configured for removable attachment to the main housing structure to cover the opening and provide an explosion-proof housing structure. The cover structure includes an integral head mass. An acoustic energy emitting assembly includes the head mass, and an excitation assembly disposed within the explosion-proof housing structure. An electronic circuit is disposed within the explosion-proof housing structure to generate a drive signal for driving the excitation assembly to cause the acoustic energy emitting assembly to resonate and generate acoustic energy. In one embodiment the acoustic energy is a beam of ultrasonic energy useful for testing ultrasonic gas detectors. A method is also described for testing ultrasonic gas leak detectors using an ultrasonic source.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: August 5, 2014
    Assignee: General Monitors, Inc.
    Inventors: Shankar B. Baliga, John G. Romero, Scott W. Reed, Cristian S. Filimon
  • Publication number: 20140202261
    Abstract: A piezoelectric sensing element includes a ring type piezoelectric device, two ceramic structural adhesives, two electrode sheets, two structural adhesives, a ring type sheet, and a disk-shaped cylindrical ceramic sheet. The two ceramic structural adhesives, respectively located above and below the ring type piezoelectric device. The two electrode sheets, respectively located above and below the two ceramic structural adhesives. The two structural adhesives, respectively located above and below the two electrode sheets. The ring type sheet, located above or below one of the two structural adhesives. The disk-shaped cylindrical ceramic sheet, located below or above another of the two structural adhesives.
    Type: Application
    Filed: March 24, 2014
    Publication date: July 24, 2014
    Applicant: CHUNG-YUAN CHRISTIAN UNIVERSITY
    Inventors: YUNG TING, SHEUAN-PERNG LIN
  • Publication number: 20140191616
    Abstract: A MEMS switch has fixed support, a plate-shaped flexible beam having at least one end immovably supported by the fixed support and having an extending movable surface, a movable electric contact disposed on the movable surface of the flexible beam, a fixed electric contact facing the movable electric contact and disposed at a fixed position relative to the fixed support, first piezoelectric driver disposed above the movable surface of the flexible beam, extending from a portion above the fixed support towards the movable electric contact, and capable of displacing the movable electric contact towards the fixed electric contact by voltage driving, and second piezoelectric driver disposed at least on the movable surface of the flexible beam and capable of so driving a movable part of the flexible beam by voltage driving that the movable electric contact is separated from the fixed electric contact.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: FUJITSU LIMITED
    Inventors: OSAMU TOYODA, Takeaki Shimanouchi
  • Patent number: 8754571
    Abstract: A two-axis inertial positioner comprises a cascaded stack of orthogonal actuators mounted on a base and a platform frictionally mounted to the top surface of one of the actuators. An alignment cartridge overlies the platform and a clamp block overlies the alignment cartridge. Ball and groove bearings are provided between the platform, alignment cartridge and clamp block to provide two axes of motion corresponding to the two operational axes of the actuators.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: June 17, 2014
    Inventor: Sergiy Pryadkin
  • Patent number: 8707549
    Abstract: The present invention relates to ultrasound transducers for ultrasonic imaging systems and, in particular, to improved grip assemblies for ultrasound transducers. One grip assembly includes a locking plate defining first and second apertures and a coupling post extending from the locking plate. An interface plate has a first elongate extension being extendable at least partially through the first aperture and a second elongate extension being extendable at least partially through the second aperture. A handle is coupled to the locking plate and includes a grip, a coupling interface, and a neck extending between the grip and the coupling interface. The coupling interface defines a coupling aperture for receiving the coupling post.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: April 29, 2014
    Assignee: Boise State University
    Inventors: Joie Burns, Michelle Sabick, Seth Kuhlman, Carly Lockard, Brittany Siewert
  • Patent number: 8656578
    Abstract: An ultrasound transducer includes an array of PZT elements mounted on a non-recessed distal surface of a backing block. Between each element and the backing block is a conductive region formed as a portion of a metallic layer sputtered onto the distal surface. Traces on a longitudinally extending circuit board—preferably, a substantially rigid printed circuit board, which may be embedded within the block—connect the conductive region, and thus the PZT element, with any conventional external ultrasound imaging system. A substantially “T” or “inverted-L” shaped electrode is thereby formed for each element, with no need for soldering. At least one longitudinally extending metallic member mounted on a respective lateral surface of the backing block forms a heat sink and a common electrical ground. A thermally and electrically conductive layer, such as of foil, transfers heat from at least one matching layer mounted on the elements to the metallic member.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: February 25, 2014
    Assignee: MR Holdings (HK) Limited
    Inventor: Xiacong Guo
  • Patent number: 8638022
    Abstract: A vibrating element includes: an element plate that has a vibrating portion that performs thickness-shear vibration, a peripheral portion that is integrally formed with the vibrating portion, and a protruding portion that is provided at the peripheral portion; and an excitation electrode that is provided at the vibrating portion. When a side length of the vibrating portion is Mx, when a side length of the excitation electrode is Ex, and when a wavelength of flexure vibrations of the element plate is ?, the relationship of (Mx?Ex)/2=?/2, and Mx/2={(A/2)+(¼)}? (where, A is a positive integer) is satisfied, and when a length of the protruding portion is Dx, and when a distance between the vibrating portion and the protruding portion is Sx, the relationship of Dx=?/2)×m, and (?/2)×n?0.1??Sx?(?/2)×n+0.1? (where m and n are positive integers) is satisfied.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 28, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Go Yamashita, Kenji Komine, Shiro Murakami
  • Patent number: 8562546
    Abstract: The present invention provides a sensor system for measuring an elastic modulus and a shear modulus and a method for using the sensor system to evaluate a tissue by determining the presence of and/or characterizing abnormal growths. The method involves applying a set of forces of different magnitudes to one or more locations of tissue, detecting the corresponding displacements due to said applied forces, determining the forces acting on those locations of tissue which are a combination of forces from the applied voltages and the countering forces from tissue deformation, obtaining the elastic modulus and/or shear modulus for a plurality of locations, and determining abnormal growth invasiveness, malignancy or the presence of a tumor from said elastic and/or shear moduli.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: October 22, 2013
    Assignee: Drexel University
    Inventors: Wan Y. Shih, Wei-Heng Shih, Hakki Yegingil, Ari D. Brooks
  • Patent number: 8536761
    Abstract: A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength ?, ?/2=(1.332/f)?0.0024 (piezoelectric resonator resonance frequency f), (Mx?Ex)/2=?/2, Mx/2={(A/2)+(1/4)}? (where, A is a positive integer), and X?20t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(?/2)×m (where, m is a positive integer). Assuming a distance Sx between the vibrating and protruding portions, Sx=(?/2)×n±0.1? (where, n is a positive integer).
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: September 17, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Go Yamashita, Kenji Komine, Shiro Murakami
  • Patent number: 8508102
    Abstract: A piezoelectric plate in the piezoelectric sensor is obtained from a rotated Y-plate where a rotation angle around the X-axis is set according to a type of the piezoelectric crystalline material, a detection region is located on a surface parallel to an X-Z plane, and a transmitting and a receiving parts are opposite to each other at positions sandwiching the detection region along an X-axis direction of the piezoelectric plate. When a guided wave excited by applying a frequency signal from the transmitting part satisfies ?h=m?/(2?) (2h: thickness of the piezoelectric plate, ?: wave number in the X-axis, ?: wave number in thickness direction normalized by ?, m: positive even number), the rotation angle satisfies the displacement of a P wave component of the guided wave becomes the maximum, or the displacement of the SH wave component of the guided wave becomes the maximum.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: August 13, 2013
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Shigetaka Kaga, Morio Onoe
  • Publication number: 20130193804
    Abstract: A piezoelectric actuator includes a fixed body, a movable body arranged to face the fixed body, and a plurality of piezoelectric elements arranged between the fixed body and the movable body and operating in a shearing mode. Each piezoelectric element having one end fixed to the fixed body and another end contacting the movable body, wherein a direction of polarization of each of the plurality of piezoelectric elements is different from each other.
    Type: Application
    Filed: January 17, 2013
    Publication date: August 1, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: SAMSUNG ELECTRONICS CO., LTD.
  • Publication number: 20130194555
    Abstract: A piezoelectric actuated device includes one or more areas of piezoelectric material coupled to a substrate. The piezoelectric material may be placed on regions of the substrate that exhibit the greatest curvature and stress when the device is vibrating according to a desired structural Eigenmode of vibration. The piezoelectric material may have a non-uniform density.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 1, 2013
    Applicant: MICROVISION, INC.
    Inventors: Wyatt O. Davis, Utku Baran, Dean R. Brown, Hakan Urey
  • Publication number: 20130188282
    Abstract: According to embodiments of the present invention, a piezoelectric actuator is provided. The piezoelectric actuator includes a shear mode piezoelectric material including a first arm and a second arm intersecting each other, the shear mode piezoelectric material having a polarization direction oriented at least substantially along a length of the first arm, wherein the shear mode piezoelectric material has a first surface and a second surface opposite to the first surface, the first surface and the second surface being adapted to undergo a shear displacement relative to each other along an axis at least substantially parallel to the polarization direction in response to an electric field applied between the first surface and the second surface in a direction at least substantially perpendicular to the polarization direction.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 25, 2013
    Applicant: Agency for Science, Technology and Research
    Inventor: Agency for Science, Technology and Research
  • Patent number: 8493006
    Abstract: A drive unit includes an ultrasonic actuator having an actuator body formed using a piezoelectric element, and a driving element provided on the actuator body and configured to output a driving force by moving according to the vibration of the actuator body, and a control section configured to induce the vibration in the actuator body by applying a first and a second AC voltages having a same frequency and different phases to the piezoelectric element. The control section adjusts the first AC voltage and the second AC voltage so that the first AC voltage and the second AC voltage have different voltage values from each other.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: July 23, 2013
    Assignee: Panasonic Corporation
    Inventors: Yusuke Adachi, Hideaki Mukae, Masaru Higashionji, Eiichi Nagaoka
  • Patent number: 8468665
    Abstract: A method of manufacturing a capacitive microphone comprises providing a substrate having at least one cavity. The method further comprises forming a backplate on the substrate, wherein the backplate has a plurality of holes, and forming a diaphragm on the backplate, wherein there are a first distance and a second distance between the diaphragm and the backplate. The method still further comprises forming an air gap between the backplate and the diaphragm through the first distance, and fastening the diaphragm to the backplate through the second distance.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 25, 2013
    Assignee: Industrial Technology Research Institute
    Inventor: Jen-Yi Chen
  • Patent number: 8456061
    Abstract: A piezoelectric thin film device comprises a piezoelectric thin film having upper and lower surfaces and a defined tilted crystal morphology, a top electrode disposed on the upper surface, a substrate having a surface morphology that corresponds to the defined crystallographically tilted morphology, and a bottom electrode disposed between and crystallographically linked to both the lower surface of the piezoelectric thin film and the substrate surface, the bottom and top electrodes having a parallel planar configuration relative to the plane of the substrate and the defined crystallographically tilted morphology having a crystallographic c-axis direction oriented at a >0° angle relative to the normal to the plane of the electrodes; and method of making the device.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: June 4, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Brady J. Gibbons, Chris Shelton, Peter Mardilovich, Tony S. Cruz-Uribe
  • Patent number: 8356399
    Abstract: A method of protecting a resonating sensor is described. The protected resonating sensor may include at least one passive ultrasonically excitable resonating sensor unit. Each sensor unit has one or more vibratable members having a resonating frequency that varies as a function of a physical variable in a measurement environment. The sensor is protected by forming one or more protective chambers defined between a compliant member and the vibratable member(s). A substantially non-compressible medium is disposed within the protective chamber(s). The compliant member has a first side that may be exposed to a measurement environment and a second side that may be exposed to the substantially non-compressible medium. The substantially non-compressible medium may be a liquid or gel and is in contact with the vibratable member(s). When the medium is a liquid, the chamber is sealed. When the medium is a gel, the chamber may be sealed or non-sealed.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: January 22, 2013
    Assignee: Microtech Medical Technologies Ltd.
    Inventor: Shay Kaplan
  • Patent number: 8347483
    Abstract: An ultrasound transducer includes an array of PZT elements mounted on a non-recessed distal surface of a backing block. Between each element and the backing block is a conductive region formed as a portion of a metallic layer sputtered onto the distal surface. Traces on a longitudinally extending circuit board—preferably, a substantially rigid printed circuit board, which may be embedded within the block—connect the conductive region, and thus the PZT element, with any conventional external ultrasound imaging system. A substantially “T” or “inverted-L” shaped electrode is thereby formed for each element, with no need for soldering. At least one longitudinally extending metallic member mounted on a respective lateral surface of the backing block forms a heat sink and a common electrical ground. A thermally and electrically conductive layer, such as of foil, transfers heat from at least one matching layer mounted on the elements to the metallic member.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 8, 2013
    Assignee: MR Holdings (HK) Limited
    Inventor: Xiaocong Guo
  • Patent number: 8319404
    Abstract: In an exemplary method for making crystal vibrating devices, four wafers are provided: a crystal wafer, a base wafer, a first-lid wafer, and a second-lid wafer. The crystal wafer defines multiple crystal vibrating pieces including respective frames and respective electrodes formed on both main surfaces thereof. The base wafer defines multiple base plates bondable to one main surface of respective frames. The first-lid wafer defines multiple first lids bondable to the other main surface of the respective frames. Each first lid defines a void registrable with respective electrodes. The second-lid wafer is sized similarly to and bondable to the first-lid wafer so as to sealably close the voids. In a first bonding step the crystal wafer is bonded to the base wafer and first-lid wafer. In a subsequent adjustment step the thickness of at least one electrode per each crystal vibrating piece is adjusted to adjust the vibrational frequency of the respective vibrating portion.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 27, 2012
    Assignee: Nihon Dempa Kogyo, Co., Ltd.
    Inventor: Takehiro Takahashi
  • Patent number: 8305154
    Abstract: The present invention is a piezoelectric crystal oscillator using parametric amplification to enhance the Q. Parametric amplification is accomplished by driving the same region of the crystal as used for the oscillator with an overtone of the crystal resonator.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 6, 2012
    Assignee: HRL Laboratories, LLC
    Inventors: Randall Kubena, Yook-Kong Yong