Sandwich Or Langevin Type Patents (Class 310/325)
  • Patent number: 10693393
    Abstract: A new tri-electrode topology reduces the control voltage requirement for electrostatic actuators. Conventional parallel plate actuators are dual-electrode systems, formed by the MEMS structure and the drive electrode. By placing a perforated intermediate electrode between these elements, a tri-electrode configuration is formed. This topology enables a low voltage on the intermediate electrode to modulate the electrostatic force of the higher voltage drive electrode, whose voltage remains fixed. Results presented show that in comparison to conventional parallel plate electrostatic actuators, the intermediate electrode's modulating voltage can be as low as 20% of normal, while still providing the full actuation stroke.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: June 23, 2020
    Assignee: University of Manitoba
    Inventors: Cyrus Shafai, Yu Zhou
  • Patent number: 10658912
    Abstract: A shock wave generating unit includes a housing and a disk in the housing. The disk includes a vibration plate, which corresponds to a shock wave transmission member covering a first opening of the housing and includes an insulating thin elastic plate and a thin metal plate. The insulating thin elastic plate, with one side corresponding to the shock wave transmission member and the opposite side provided with the thin metal plate, has a hollow portion for partially exposing the thin metal plate and forms an accommodating cavity together with the exposed portion of the thin metal plate and the shock wave transmission member. A shock wave transmission medium can circulate through the accommodating cavity via a channel in the housing and is in contact with the exposed portion of the thin metal plate to facilitate dissipation of the heat generated by the disk during operation.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 19, 2020
    Assignee: Lite-Med Inc.
    Inventors: Chia-Chi Lin, Yung-Chen Su, Po-Hsiang Kuo
  • Patent number: 10566518
    Abstract: A composite substrate according to the present invention includes a support substrate having a diameter of 2 inches or more, and a piezoelectric substrate having a thickness of 20 ?m or less and bonded to the support substrate to transmit light. The piezoelectric substrate has a thickness distribution shaped like a fringe. A waveform having an amplitude within a range of 5 to 100 nm in a thickness direction and a pitch within a range of 0.5 to 20 mm in a width direction appears in the thickness distribution of the piezoelectric substrate in a cross section of the composite substrate taken along a line orthogonal to the fringe, and the pitch of the waveform correlates with a width of the fringe. In the piezoelectric substrate, the fringe may include either parallel fringes or spiral or concentric fringes.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: February 18, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Tomoki Nagae, Ayato Koizumi
  • Patent number: 10495501
    Abstract: An ultrasonic transducer for an ultrasonic flow meter, with a transducer housing, with a transducer element for generating and/or for receiving ultrasonic signals and with an emitting element, the emitting element being exposed to ultrasonic signals at least indirectly from the transducer element and emitting the ultrasonic signals via one end face on one front side of the emitting element into the vicinity bordering the ultrasonic transducer and/or the emitting element picking up ultrasonic signals from the vicinity via one end face on one front side of the emitting element and transmitting them at least indirectly to the transducer element. A good directional action in spite of small dimensions is achieved by the emitting element being connected to the transducer housing via a connecting element and being free standing on its periphery on the front side such that it can oscillate freely on the periphery.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 3, 2019
    Assignee: KROHNE AG
    Inventors: Jeroen Martin van Klooster, Arie Huijzer
  • Patent number: 10497350
    Abstract: An arrangement, comprising a housing wall, an ultrasonic transducer and a damping element with a longitudinal axis, which damping element connects the ultrasonic transducer with the housing wall. The ultrasonic transducer has an end piece with a medium-contacting surface, from which ultrasonic signals are transferred into a gaseous or liquid medium. The damping element is provided for body sound damping between the ultrasonic transducer and the housing wall, and wherein the damping element has at least one, especially a number of, oscillatory nodes, characterized in that there is arranged between the damping element and the housing wall at least a first sealing ring, which is positioned at a height of an oscillatory node.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: December 3, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Yaoying Lin, Alfred Rieder, Wolfgang Drahm, Michal Bezdek, Pierre Ueberschlag
  • Patent number: 10328462
    Abstract: An ultrasonic transducer having a transducer element, a housing, a coupling element with a front and a back, wherein the back of the coupling element is acoustically coupled to the top of the transducer element in order to couple the ultrasonic waves generated by the transducer element out to the environment in a transmit mode or in order to pass the ultrasonic waves received from the environment by the coupling element on to the transducer element in a receive mode. The transducer element and the coupling element are arranged in the housing. A first electrode is connected to a contact area formed on the bottom of the transducer element. The transducer element is arranged in a shielding device made of a metallically conductive material, and the opening of the shielding device is covered by a metallic, conductive screen so that the shielding device and the screen form a Faraday cage.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: June 25, 2019
    Assignee: Pepperl + Fuchs GmbH
    Inventor: Stefan Zimmermann
  • Patent number: 10268866
    Abstract: The present disclosure provides an ultrasonic probe. The ultrasonic probe includes a piezoelectric layer, including a number of piezoelectric posts arranged in a number of rows along a first direction and arranged in a number of columns along a second direction, and an angle between the first direction and the second direction being an acute angle, a distance between the two adjacent piezoelectric posts along the first direction being greater than a distance between the two adjacent rows of the piezoelectric posts. The ultrasonic probe improves the density of the piezoelectric post by misaligning the two adjacent rows of piezoelectric posts and compressing the row spacing, which makes better use of the space between the two adjacent rows of piezoelectric posts. That is, the space utilization of the ultrasonic probe is improved and pixel density is high.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 23, 2019
    Assignee: NANCHANG O-FILM BIO-IDENTIFICATION TECHNOLOGY CO., LTD.
    Inventors: Anpeng Bai, Wensi Sun
  • Patent number: 10211389
    Abstract: In the composite substrate 10, the piezoelectric substrate 12 and the support substrate 14 are bonded by direct bonding using an ion beam. One surface of the piezoelectric substrate 12 is a negatively-polarized surface 12a and another surface of the piezoelectric substrate 12 is a positively-polarized surface 12b. An etching rate at which the negatively-polarized surface 12a is etched with a strong acid may be higher than an etching rate at which the positively-polarized surface 12b is etched with the strong acid. The positively-polarized surface 12b of the piezoelectric substrate 12 is directly bonded to the support substrate 14. The negatively-polarized surface 12a of the piezoelectric substrate 12 may be etched with the strong acid.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 19, 2019
    Assignees: NGK INSULATORS, LTD., NGK CERAMIC DEVICE CO., LTD.
    Inventors: Tomoyoshi Tai, Yuji Hori, Takahiro Yamadera, Ryosuke Hattori, Kengo Suzuki
  • Patent number: 10177612
    Abstract: A material of the stator core is different from a material of the housings, in a state where one end portion in the axis direction of the stator core is contacted to the first housing, and the other end portion in the axis direction of the stator core is contacted to the second housing; and a neighboring portion of a contact portion, at which the first housing is contacted to the stator core, and another neighboring portion of a contact portion, at which the second housing is contacted to the stator core, are connected by a connecting component in the axis direction, of which material is the same as a material of the stator core, whereby the first housing and the second housing are connected each other; and the first housing and the second housing face each other in a state where a gap intervenes between both housings.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: January 8, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Isao Sonoda, Kohei Ushio, Satoru Akutsu
  • Patent number: 10052667
    Abstract: A method of cleaning a vessel having deposits on an interior surface includes removably bonding an ultrasonic transducer to an external wall of the vessel and using the ultrasonic transducer to produce ultrasonic energy coupled into the vessel wall such that at least a portion of the ultrasonic energy is transmitted to the interior surface.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 21, 2018
    Assignee: Dominion Engineering, Inc.
    Inventors: Sotaro Kaneda, Jean E. Collin, Joshua M. Luszcz, Christopher R. Casarez, Marc A. Kreider, Robert D. Varrin, Jr., David J. Gross
  • Patent number: 9974587
    Abstract: A PZT transducer-horn integrated ultrasonic driving structure consists of a nut, a bolt, a left PZT circular stack, a flange, a right PZT truncated stack and a horn. The horn, the right PZT truncated stack, the flange and the left PZT circular stack are arranged in sequence and connected via the bolt and then fastened via the nut; the right PZT transducer is a truncated cone-shaped stack formed by PZT circular plates; and the right PZT transducer and the horn are integrated to form the ultrasonic driving structure. Considering the dimension of PZT on two sides of the flange and the horn meet the requirements for ultrasonic vibration node and antinode, the dimension of round contour of the circular PZT stack and flange is reduced to increase the thickness of the truncated PZT stack and flange.
    Type: Grant
    Filed: September 13, 2015
    Date of Patent: May 22, 2018
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Rui Wang, Xuyue Wang, Xiaoming Wang
  • Patent number: 9669471
    Abstract: An ultrasonic machining module that includes an ultrasonic transducer, wherein the ultrasonic transducer is adapted to receive a machining tool and a vibration-isolating housing adapted to be both compatible with a machining system and to receive the ultrasonic transducer therein, wherein the housing further includes at least one modification for isolating all vibrations generated by the ultrasonic transducer when the device is in operation except axial vibrations transmitted to the machining tool, thereby preventing unwanted vibrations from traveling backward or upward into the machining system.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: June 6, 2017
    Assignee: CUMBERLAND & WESTERN RESOURCES, LLC
    Inventors: Matthew A. Short, Karl F. Graff
  • Patent number: 9579846
    Abstract: In a lateral sealing mechanism, a cylindrical film is sandwiched and ultrasonic sealing is performed along a direction that intersects a conveying direction while a first horn and a first anvil, and a second horn and a second anvil rotate. The first horn is mounted on a first rotating body in a state of being coupled to a plurality of vibrating elements. The second horn is mounted on the second rotating body in a state coupled to a plurality of vibrating elements. A securing member grips a horn unit, which includes the horns and the plurality of vibrating elements, on the forward and rearward sides in the direction of rotation of the horn assembly in the vicinity of the node of ultrasonic vibration and secures the horn unit to the first rotating body and the second rotating body, respectively.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 28, 2017
    Assignee: ISHIDA CO., LTD.
    Inventor: Satoru Kamigaito
  • Patent number: 9542283
    Abstract: One embodiment provides an apparatus, including: at least one hot-swappable component; at least one engagement device, wherein the engagement device selectively operates to prevent removal of a non-failed hot-swappable component from a carrier; and a detector; the detector detecting at least one failed hot-swappable component. Other embodiments are described and claimed herein.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: January 10, 2017
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: David Perez-Feliciano, Amy Leigh Rose
  • Patent number: 9506789
    Abstract: An ultrasonic transducer apparatus is provided. In one embodiment, the apparatus includes an outer housing, an inner housing disposed within the outer housing, and an ultrasonic transducer disposed within the inner housing. The outer housing has an aperture that enables pressurized fluid to enter the outer housing while allowing the outer housing to acoustically isolate the inner housing and the ultrasonic transducer from an additional component when the outer housing is connected to the additional component. Additional systems, devices, and methods are also disclosed.
    Type: Grant
    Filed: April 27, 2014
    Date of Patent: November 29, 2016
    Assignee: Cameron International Corporation
    Inventors: Emanuel J. Gottlieb, Kevin P. Minnock, Donald R. Augenstein, Richard A. Zuckerman
  • Patent number: 9287490
    Abstract: A laminated piezoelectric element that includes a piezoelectric element layer and a matching layer. The piezoelectric element layer is configured to have a plurality of piezoelectric layers and a plurality of electrode layers laminated together. The matching layer is laminated on the piezoelectric element layer, and is different in acoustic impedance from the piezoelectric element layer. When Vp represents the acoustic velocity in the piezoelectric element layer, Vm represents the acoustic velocity in the matching layer, Tp represents the thickness dimension of the piezoelectric element layer, and Tm represents the thickness dimension of the matching layer, Vp/Vm=Tp/Tm holds. Further, when W represents the dimension of the laminated piezoelectric element in the width direction, Tp+Tm>W holds.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: March 15, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Junichi Nishie, Chikashi Kondo, Junshi Ota
  • Patent number: 9154055
    Abstract: Disclosed is a drive device 1 which is adapted to move a driven member used on a speed difference between during extending and during contracting in a course of vibration of a vibrator. The vibrator, e.g., a piezoelectric element 4, 5, is formed in a structure which has two resonance modes identical in terms of a vibration direction, and allows a ratio between resonance frequencies of the two resonance modes to become approximately 2. A drive signal to be given to the vibrator is configured to approximately conform to the two resonance modes. The drive device 1 having the above configuration makes it possible to generate pseudo-sawtooth displacement vibration multiplied by an amplitude amplification factor Q through resonance, thereby improving a movement speed, and allow a larger part of input energy to be used for mechanical vibration, thereby improving energy efficiency.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: October 6, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takeshi Morita, Ryuichi Yoshida
  • Patent number: 9114427
    Abstract: An acoustic antenna includes an array of elementary submarine transducers, each elementary transducer including, between a counterweight and a horn, at least one ceramic. Each elementary transducer is mounted on a printed circuit so that the printed circuit is clamped between the ceramic and counterweight thereof. The printed circuit includes conductors for connection to electrodes of the respective ceramic for individual control of the elementary transducers. The weight of each element of the elementary transducer is set to minimize cross-talk between channels.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: August 25, 2015
    Assignee: IXBLUE
    Inventors: Gilles Grosso, Frederic Mosca
  • Patent number: 8981618
    Abstract: A tunable acoustic resonator device has a piezoelectric medium as a first thin film layer and a tunable crystal medium as a second thin film layer. The tunable crystal medium has a first acoustic behavior over an operating temperature range under a condition of relatively low applied stress and a second acoustic behavior under a condition of relatively high applied stress. The acoustic behaviors are substantially different and, consequently, the different levels of applied stress are used to tune the acoustic resonator device. Compared with the tunable resonator device consisting of only tunable crystal medium, a device having both the piezoelectric and tunable crystal medium has advantages such as larger inherent bandwidth and less nonlinearity with AC signals. The device also requires a smaller applied stress (i.e. bias voltage) to achieve the required frequency tuning.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: March 17, 2015
    Assignee: Cymatics Laboratories Corp.
    Inventors: Rajarishi Sinha, L. Richard Carley, Deok-Yang Kim
  • Patent number: 8754570
    Abstract: In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency. In various embodiments, an ultrasonic blade extends along the longitudinal axis and is coupled to the transducer. In various embodiments, the ultrasonic blade includes a body having a proximal end and a distal end, wherein the distal end is movable relative to the longitudinal axis by the vibrations produced by the transducer.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: June 17, 2014
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Aaron C. Voegele, Scott A. Nield, Foster B. Stulen, Shan Wan
  • Publication number: 20140015377
    Abstract: A piezoelectric element (20) is attached to a vibration member (10). A plurality of electrodes (22) are two-dimensionally arranged on one surface of the piezoelectric element (20) so as to be spaced apart from each other. A supporting frame (40) supports an edge of the vibration member (10). A control unit (50) inputs an independent driving signal to each of the plurality of electrodes (22). Thus, a large output can be obtained with a resonance frequency depending on what signal is input to which electrode (22). For example, the piezoelectric element (20) is a resin film that is formed of a high molecular material indicating a piezoelectric property.
    Type: Application
    Filed: December 5, 2011
    Publication date: January 16, 2014
    Applicant: NEC CASIO MOBILE COMMUNICATIONS, LTD.
    Inventors: Yasuharu Onishi, Jun Kuroda, Yuichiro Kishinami, Yukio Murata, Shigeo Satou, Nobuhiro Kawashima, Motoyoshi Komoda, Tatsuya Uchikawa
  • Patent number: 8559660
    Abstract: An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a second electrode configured to receive the audio signal, a first electret between the first electrode and the second electrode, the first electret including at least one dielectric layer containing electrostatic charges, a second electret between the first electrode and the second electrode, the second electret including at least one dielectric layer containing electrostatic charges, and a conductive layer sandwiched between the first electret and the second electret, the conductive layer, the first electret and the second electret being capable of vibratory motion relative to the first electrode and the second electrode based on the audio signal.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: October 15, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Dar-Ming Chiang, Yan-Ren Chen, Long-Cheng Cheng, I-Chen Lee
  • Patent number: 8531083
    Abstract: A tunable acoustic resonator device has a piezoelectric medium as a first thin film layer and a tunable crystal medium as a second thin film layer. The tunable crystal medium has a first acoustic behavior over an operating temperature range under a condition of relatively low applied stress and a second acoustic behavior under a condition of relatively high applied stress. The acoustic behaviors are substantially different and, consequently, the different levels of applied stress are used to tune the acoustic resonator device. Compared with the tunable resonator device consisting of only tunable crystal medium, a device having both the piezoelectric and tunable crystal medium has advantages such as larger inherent bandwidth and less nonlinearity with AC signals. The device also requires a smaller applied stress (i.e. bias voltage) to achieve the required frequency tuning.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: September 10, 2013
    Assignee: Resonance Semiconductor Corporation
    Inventors: Rajarishi Sinha, L. Richard Carley, Deok-Yang Kim
  • Publication number: 20130214643
    Abstract: A resonator is described. The resonator includes multiple electrodes. The resonator also includes a composite piezoelectric material. The composite piezoelectric material includes at least one layer of a first piezoelectric material and at least one layer of a second piezoelectric material. At least one electrode is coupled to a bottom of the composite piezoelectric material. At least one electrode is coupled to a top of the composite piezoelectric material.
    Type: Application
    Filed: August 16, 2012
    Publication date: August 22, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Chengjie Zuo, Changhan Hobie Yun, Jonghae Kim
  • Patent number: 8450907
    Abstract: A sound generator includes a transducer converting electric energy to mechanical energy, a mechanical amplifier mechanically amplifying a vibration generated in a piezoelectric component of the transducer, and a radiation plate radiating a sound wave from a signal amplified by the mechanical amplifier, wherein the radiation plate includes a first step having a height for compensating for a first resonance frequency and a second step having a height for compensating for a second resonance frequency.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: May 28, 2013
    Assignee: POSTECH Academy-Industry Foundation
    Inventors: Won Kyu Moon, Haksue Lee, Yub Je
  • Patent number: 8415860
    Abstract: An energy harvesting apparatus and method that is especially well suited for harvesting low frequency broadband vibration energy from a vibrating structure is presented. The apparatus includes a pair of disc springs that are arranged in an opposing relationship. A threaded fastening member and a threaded nut extend through apertures in each of the disc springs and enable a predetermined preload force to be applied to the disc springs. The preload effectively “softens” the disc springs, thus heightening the sensitivity of the disc springs to low frequency, low amplitude vibration energy. A piezoelectric material ring is secured to each of the disc springs. Each piezoelectric material ring experiences changes in strain as its associated disc spring deflects in response to vibration energy experienced from a vibrating structure.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: April 9, 2013
    Assignee: The Boeing Company
    Inventors: Matthew C. Malkin, Gerardo Pena
  • Patent number: 8334636
    Abstract: The invention relates to a coupling unit (24) for transmitting high-frequency mechanical vibrations from a vibration generator (12) onto a tool (34). Said coupling unit comprises in input part (22) and an output part (30) that are interconnected via two identical vibration bars (26, 28), said bars being off-set from each other. The bars may have the shape of quadrants to provide the output movement in a direction that forms an angle of 90° with the direction of the input movement.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: December 18, 2012
    Inventor: Michael Thoms
  • Patent number: 8334635
    Abstract: In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a transducer configured to produce vibrations along a longitudinal axis at a predetermined frequency. In various embodiments, an ultrasonic blade extends along the longitudinal axis and is coupled to the transducer. In various embodiments, the ultrasonic blade includes a body having a proximal end and a distal end, wherein the distal end is movable relative to the longitudinal axis by the vibrations produced by the transducer.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: December 18, 2012
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Aaron C. Voegele, Scott A. Nield, Foster B. Stulen, Shan Wan
  • Patent number: 8303613
    Abstract: A Langevin transducer horn uses split electroding or selective electroding of transducer elements and phase relationships of the voltages applied thereto to determine the relative longitudinal and flexural/transverse motion induced in the tip of the horn.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: November 6, 2012
    Assignee: Zevex, Inc.
    Inventors: Frank Anthony Crandall, Blake Allen, Mark Stringham, Joseph Luis, Olga Jovic, David Blaine
  • Publication number: 20120200373
    Abstract: An acoustic wave device including: a substrate; a piezoelectric film formed on the substrate; an lower electrode provided on a first surface of the piezoelectric film; an upper electrode provided on a second surface of the piezoelectric film opposite to the first surface; and a mass loading film having a first pattern and a second pattern in a resonance portion in which the lower electrode and the upper electrode face each other through the piezoelectric film, the first pattern having portions and the second pattern having portions interlinking the portions of the first pattern.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 9, 2012
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA, Tsuyoshi YOKOYAMA, Takeshi SAKASHITA
  • Publication number: 20120164753
    Abstract: An apparatus comprises a thin-film bulk acoustic resonator such as including an acoustic mirror, a piezoelectric region acoustically coupled to the acoustic mirror, and first and second conductors electrically coupled to the piezoelectric region. In an example, an integrated circuit substrate can include an interface circuit connected to the first and second conductors of the resonator, the integrated circuit substrate configured to mechanically support the resonator. An example can include an array of such resonators co-integrated with the interface circuit and configured to detect a mass change associated with one or more of a specified protein binding, a specified antibody-antigen coupling, a specified hybridization of a DNA oligomer, or an adsorption of specified gas molecules.
    Type: Application
    Filed: October 28, 2011
    Publication date: June 28, 2012
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: Matthew Johnston, Kenneth Shepard, Ioannis Kymissis
  • Patent number: 8128646
    Abstract: An ultrasonic vibration apparatus includes a vibrator, wherein the vibrator includes at least two vibration elements to generate ultrasonic vibration when a driving voltage is applied to the vibration elements, at least three electrode portions wherein the vibration elements and the electrode portions is alternately arranged side by side in a vibrating direction, at least the three electrode portions includes at least two first electrode portions and at least one second electrode portion alternately arranged in the vibrating direction, the vibrator integrally vibrates ultrasonically in the vibrating direction when the driving voltage is applied to the first electrode portions and the second electrode portion, and a bridging portion coupling and electrically connecting two first electrode portions of at least the two first electrode portions with each other, and the ultrasonic vibration apparatus further includes an anti-vibration portion to suppress vibration of the bridging portion in any other direction exc
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: March 6, 2012
    Assignee: Olympus Medical Systems, Corp.
    Inventors: Yuji Hirai, Masashi Yamada, Machiko Koshigoe
  • Publication number: 20110227450
    Abstract: A resonator body includes a base portion, resonating arms that are extended from the base portion, piezoelectric body elements that are arranged on the resonating arms, first electrode layers that are arranged on the resonating arms, piezoelectric body layers that are arranged on the first electrode layers and second electrode layers that are arranged on the piezoelectric body layers, and a plurality of fine holes that penetrates at least any one layer of these layers in a thickness direction is formed.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 22, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi YAMAZAKI
  • Publication number: 20110227451
    Abstract: A resonator body of a resonator device includes a base portion, two resonating arms that are extended from the base portion in a Y axis direction and arranged in parallel to an X axis direction that is orthogonal to the Y axis direction, and excitation electrodes that are arranged on each of the resonating arms in a pair and excite the resonating arms by applying an electric current, wherein a plurality of holes that partially penetrates at least one side of a pair of excitation electrodes in a thickness direction is formed so that the vibration characteristic of the resonating arm is adjusted.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 22, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi YAMAZAKI
  • Publication number: 20110221307
    Abstract: A micro or nano electromechanical transducer device formed on a semiconductor substrate comprises a movable structure which is arranged to be movable in response to actuation of an actuating structure. The movable structure comprises a mechanical structure having at least one mechanical layer having a first thermal response characteristic, at least one layer of the actuating structure having a second thermal response characteristic different to the first thermal response characteristic, and a thermal compensation structure having at least one thermal compensation layer. The thermal compensation layer is different to the at least one layer and is arranged to compensate a thermal effect produced by the mechanical layer and the at least one layer of the actuating structure such that the movement of the movable structure is substantially independent of variations in temperature.
    Type: Application
    Filed: November 25, 2009
    Publication date: September 15, 2011
    Applicants: Freescale Semiconductors, Inc., COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Lianjun Liu, Sergio Pacheco, Francois Perruchot, Emmanuel Defay, Patrice Rey
  • Patent number: 8004158
    Abstract: The invention relates to a method and a device for cooling ultrasonic transducers. The inventive device is characterised in that it consists of at least one piezo stack (4) and at least two cylindrical transducer bodies (5), which together with the piezo stack (4) form an ?/2 oscillator. In multiple transducer assemblies, two respective transducer bodies (5) can be combined to form a common transducer body (6) and the transducer bodies (5, 6) comprise flow channels (7), through which pressurised coolant can flow. The inventive method for cooling ultrasonic transducers is characterised in that the body of the ultrasonic transducer is traversed and/or surrounded by a pressurised coolant. This enables the heat that is generated in the transducers to be directly dissipated by convection. In addition the inventive elements enable the creation of a large common contact surface between the transducers and the coolant.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: August 23, 2011
    Assignee: Dr. Hielscher GmbH
    Inventor: Harald Hielscher
  • Patent number: 7977852
    Abstract: A method of harvesting energy from a vibrational energy source having a varying energy characteristic. The method includes the step of varying a characteristic of a harvesting arrangement arranged to harvest the energy, the characteristic of the harvesting arrangement being varied in response to the varying energy characteristic of the vibrational energy source.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: July 12, 2011
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: John Kelvin Ward, Sam Behrens
  • Patent number: 7888845
    Abstract: The invention relates to a device for coupling low-frequency high-power ultrasound resonators by a tolerance-compensating force-transmitting connection having at least one contact surface between the at least two resonators on or proximate to the oscillation maximum of the oscillation to be transmitted by the coupling for the purpose of transmitting low-frequency ultrasound power between the resonators coupled in this manner.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: February 15, 2011
    Assignee: Dr. Hielscher GmbH
    Inventors: Holger Hielscher, Thomas Hielscher, Harald Hielscher
  • Patent number: 7876030
    Abstract: An ultrasonic transducer includes: piezoelectric elements; a pair of clamping members which clamp said piezoelectric elements; and a cover member which is crimped to at least one of said pair of clamping members in a state where said cover member cooperates with said pair of clamping members to surround said piezoelectric elements.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: January 25, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hideaki Taki, Wataru Kimura, Noritaka Yoshida, Naohito Sato, Mitsugu Onoda, Hiroyuki Kawaji
  • Patent number: 7872400
    Abstract: The present invention refers to an ultrasonic device comprising an ultrasound transducer; and a disk-shaped metallic low-frequency ultrasound (NFLUS) resonator being mechanically connected with the ultrasound transducer on one side of the resonator; a container with an opening on its bottom side and being arranged on the other side of the disk-shaped resonator such that the opening is facing the disk-shaped resonator; an elastic sealing element arranged between the disk-shaped resonator and the container for sealing the container around the opening; and means for supplying a pressing force such that the container is tightened on the resonator during ultrasonication, but can be repeatedly disassembled and assembled after ultrasonication.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: January 18, 2011
    Assignee: Dr. Hielscher GmbH
    Inventors: Holger Hielscher, Thomas Hielscher, Harald Hielscher
  • Publication number: 20110001394
    Abstract: The piezoelectric thin-film tuning fork resonator (40) comprises an integral tuning fork made out of a quartz crystal. The tuning fork comprises a base (48) and a pair of parallel vibrating arms (44, 46) extending from the base. Each of the vibrating arms carries: first and second electrodes (62, 64) provided on at least one main surface of the arm, said first and second electrodes being formed respectively on an inner portion and on an outer portion of said one main surface, in such a way as to be spaced apart, first and second piezoelectric thin films (66, 68) formed over the first and second electrodes respectively, third and fourth electrodes (70, 72) formed over the first and second piezoelectric thin films respectively.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 6, 2011
    Applicant: ETA SA
    Inventors: Silvio Dalla Piazza, Felix Staub
  • Publication number: 20100156241
    Abstract: A supporting substrate and a piezoelectric substrate are prepared. A surface of the supporting substrate is bonded to the backside of the piezoelectric substrate with an organic adhesive layer interposed therebetween to form a laminated substrate. Subsequently, a peripheral surface of the laminated substrate is ground such that a peripheral surface of the piezoelectric substrate, a peripheral surface of the organic adhesive layer, and a peripheral surface of the supporting substrate on the side of the organic adhesive layer are made flush with each other. Subsequently, the surface of the piezoelectric substrate is polished to reduce the thickness of the piezoelectric substrate and performing mirror polishing of the surface.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: NGK Insulators, Ltd.
    Inventors: Kenji SUZUKI, Yasunori IWASAKI, Takashi YOSHINO
  • Patent number: 7737607
    Abstract: Temporary assembling is carried out by inserting an ion conducting actuator into a groove which is provided at a central portion of a substrate. Thereafter, a bump is pressed by forcing in a direction of a surface of the substrate while carrying out leveling and thrust control, by a flat portion of a pedestal having a recess which is provided such that the ion conducting actuator is not crushed. At this time, due to a deformation of the bump which is pressed, the electrical connections are carried out assuredly, and the ion conducting actuator is held mechanically by both sides.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: June 15, 2010
    Assignee: Olympus Corporation
    Inventors: Takayuki Ide, You Kondoh
  • Patent number: 7728489
    Abstract: A piezoelectric actuator with piezoelectric elements, fastened between an actuator head and an actuator foot, and with a plastic sleeve surrounding at least the piezoelectric elements is proposed, which is set in a clamping ring on the actuator head and/or the actuator foot of the piezoelectric actuator. The respective clamping ring may be a metal part or a plastic part, which is equipped with clamping lugs suitable for setting the plastic sleeve and is thrust, pressed, or shrunk onto the respective actuator head and/or actuator foot of the steel piezoelectric actuator.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: June 1, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Heinz, Dieter Kienzler, Udo Schaich
  • Publication number: 20100127600
    Abstract: The invention relates to piezoelectric sensor arrangements, especially sensor arrangements that can be operated in a measuring fluid, in order to be able to detect, for example, elastic properties of the measuring fluid itself or the presence and/or concentration of analyte molecules in the fluid. According to the invention, the sensor arrangement comprises an acoustic resonator which has a sensitive region and is arranged such that a resonance frequency of the sensor arrangement varies according to properties of the measuring fluid. The acoustic resonator is formed by a piezoelectric thin layer resonator and the sensitive region is produced by means of epitaxy, such that transversally polarised vibration modes can be induced.
    Type: Application
    Filed: December 5, 2007
    Publication date: May 27, 2010
    Inventors: Marc Loschonsky, Armin Dadgar, Leonhard Reindl
  • Patent number: 7714481
    Abstract: An ultrasonic treatment apparatus includes an ultrasonic transducer that generates ultrasonic vibrations, a probe that includes a proximal end connected with the ultrasonic transducer, and transmits ultrasonic vibrations generated by the ultrasonic transducer from the proximal end to a distal end thereof, and a treatment portion that is formed at the distal end of the probe, and utilizes the transmitted ultrasonic vibrations to treat a living tissue. The treatment portion includes two or more protrusions.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: May 11, 2010
    Assignee: Olympus Medical Systems Corp.
    Inventor: Ryoji Sakai
  • Publication number: 20090289526
    Abstract: A tunable acoustic resonator device. The device has a piezoelectric medium as a first thin film layer and a tunable crystal medium as a second thin film layer. The tunable crystal medium has a first acoustic behavior over an operating temperature range under a condition of relatively low applied stress and a second acoustic behavior under a condition of relatively high applied stress. The acoustic behaviors are substantially different. The tunable crystal medium has a highly field-polarizable and lattice-deformable, substantially centrosymmetric structure over an operating temperature range under a condition of relatively low applied stress. The tunable crystal medium has a substantially non-centrosymmetric structure over said operating temperature range under a condition of relatively high applied stress. The dielectric permittivity of the tunable crystal medium is at least 100 at the relatively low applied stress.
    Type: Application
    Filed: February 24, 2009
    Publication date: November 26, 2009
    Applicant: RESONANCE SEMICONDUCTOR CORPORATION
    Inventors: Rajarishi Sinha, L. Richard Carley, Deok-Yang Kim
  • Publication number: 20090149801
    Abstract: A Langevin transducer horn uses split electroding or selective electroding of transducer elements and phase relationships of the voltages applied thereto to determine the relative longitudinal and flexural/transverse motion induced in the tip of the horn.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 11, 2009
    Inventors: Frank Anthony Crandall, Blake Allen, Mark Stringham, Joseph Luis, Olga Jovic, David Blaine
  • Patent number: 7495370
    Abstract: A longitudinal vibrator-type transducer including: a head mass; a tail mass; a first piezo-resonator positioned between the head and tail masses; and, a coupling member coupling the head mass, tail mass and first piezo-resonator together; wherein, the head mass comprises a piezoceramic plate.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: February 24, 2009
    Assignee: Lockheed Martin Corporation
    Inventor: Raymond Porzio
  • Patent number: 7495371
    Abstract: A ultrasonic cleaning system includes a tank composed of quartz or silicon carbide and one or more sleeved ultrasonic transducers mounted to the tank. The sleeved ultrasonic transducer has a two-part head mass, including a threaded sleeve and an outer housing that are composed of different materials. The threaded sleeve is preferably a metal that provides superior thread strength for mating with a compression bolt, while the outer housing is preferably silicon carbide or other ceramic material that provides a good thermal expansion match to the tank to facilitate adhesive bonding of the transducer to the tank.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: February 24, 2009
    Assignee: The Crest Group, Inc.
    Inventor: J. Michael Goodson