Direct Mechanical Coupling Patents (Class 310/323.01)
  • Patent number: 11183952
    Abstract: A rotating piezoelectric motor including a piezoelectric actuator including a resonator having a pair of arms connected at one of their ends in a connection area, the other two ends being referred to as ‘free’, a passive element including a cylindrical part extending orthogonally to the resonator, the cylindrical part being able to be rotated by the friction of the free ends of the arms on the cylindrical part, each free end including a protuberance such that the protuberances extend towards one another and together form a housing for a portion of the cylindrical part, the motor including a device for holding the portion of the cylindrical part inside the housing.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: November 23, 2021
    Assignee: ETA SA Manufacture Horlogere Suisse
    Inventors: Pascal Lagorgette, Pascal Meyer
  • Patent number: 11152873
    Abstract: A piezo-electric motor 100 includes an actuation portion including an actuation surface 106 and a piezo stack 102 that is operable in response to the application of a voltage to move the actuation surface along an actuation axis 116 between a retracted position and an extended position. A spring strap 112 partially surrounds the actuation portion and is operable to bias the actuation surface toward the retracted position and a movable portion 108,110 is frictionally engaged with the actuation surface. The voltage is selected such that the movable portion sticks to the actuation surface as the actuation surface moves toward one of the retracted position and the extended position and slips on the actuation surface as the actuation surface moves toward the other of the retracted position and the extended position.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: October 19, 2021
    Assignee: Physik Instrumente (PI) GmbH & Co. KG
    Inventor: William Culpi
  • Patent number: 11075592
    Abstract: A vibrating type actuator which hardly causes a failure and can suppress occurrence of abnormal noise while not preventing vibration from being excited in a vibrator. The vibrating type actuator comprises a vibrator in which vibration is excited, and a contact body which is in contact with the vibrator, wherein the vibrator and the contact body move relatively to each other. The vibrating type actuator comprises a holding member which holds the vibrator, a pressurizing member which pressurizes the vibrator against the contact body, a support member which movably supports the holding member in a pressurizing direction, in which the pressurizing member performs pressurization, and an vibration damping member which is in contact with the holding member at a plurality of portions while sandwiching the holding member in a direction orthogonal to the pressurizing direction.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: July 27, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Oda, Makoto Shihoh
  • Patent number: 11012004
    Abstract: A vibration actuator includes a vibrator including a shaft, an output transmission member penetrated by the shaft, and configured to rotate about the axis of the shall, and a fixed member configured not to move relative to the shaft and configured to move relative to the output transmission member. The fixed member includes a base portion and a projection portion protruding from the base portion to the output transmission member side, the vibration actuator includes a pressure reception member between the base portion and the output transmission member in an axial direction of the shaft, and wherein the projection portion and the output transmission member are in contact with each other in a direction orthogonal to the axial direction of the shaft, and the projection portion and the output transmission member are not in contact with each other in the axial direction of the shaft.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 18, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Shimada, Hiroyuki Seki
  • Patent number: 10959739
    Abstract: A piezoelectric device comprising: (a) a handpiece for holding by a user; (b) a cutting insert for said handpiece; (c) an ultrasound transducer disposed within the handpiece, the ultrasound transducer capable of providing first and second ultrasound frequency vibrations to the cutting insert in response to an electrical signal; and (d) a switch allowing the user to control the electrical signal and thereby provide either said first or second ultrasound frequency vibrations to the cutting insert. The device is useful in a method of placing an implant into an implant site comprising cutting overlying gingival tissue at a first ultrasound frequency capable of cutting soft tissue, then switching to a second ultrasound frequency capable of cutting the underlying jawbone.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: March 30, 2021
    Inventor: Kurt Gans Briscoe
  • Patent number: 10949030
    Abstract: Acoustic transducers can be formed form piezoelectric materials including one or more curved (non-linear) segments. The piezoelectric material can be shear poled such that a poling direction of the piezoelectric material can follow the curvature of the piezoelectric material. The piezoelectric material can also have a unidirectional poling direction. In some examples, the piezoelectric material can be a closed ring with a circular or partially circular shape. A shear poling process for a piezoelectric material with curves can include shear poling segments of the piezoelectric material with one or more sets of poling electrodes. The poling electrodes of a respective one of the one or more sets of poling electrodes can be coupled to the same side of the piezoelectric material.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Ehsan Khajeh, Aaron Scott Tucker, Brian Michael King, Marcus Yip
  • Patent number: 10938326
    Abstract: Disclosed is a vibration wave motor including: a vibrator provided with a piezoelectric element and a vibration plate; a frictional member having a frictional contact surface coming into contact with the vibrator; a fixing member having a recess to which the frictional member is fixed; and pressurizing unit that pressurizes the vibrator toward the frictional member, wherein the vibrator and the frictional member make relative movement using vibration generated from the vibrator, a fixing material for fixing the frictional member is provided between the frictional member and the fixing member, and the frictional member is fixed by coming into contact with the fixing member.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: March 2, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kenta Takai
  • Patent number: 10874807
    Abstract: Embodiments of the invention disclose a combined ultrasonic atomizer, an atomization method thereof and electronic cigarette.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: December 29, 2020
    Assignee: China Tobacco Hunan Industrial Co., Ltd.
    Inventors: Jianfu Liu, Kejun Zhong, Xiaoyi Guo, Wei Huang, Yuangang Dai, Xinqiang Yin, Jianhua Yi, Hong Yu, Lizhou Shen
  • Patent number: 10498261
    Abstract: A vibration-type actuator can downsizes a pressing mechanism for bringing a vibrating body and a driven body into press contact with each other and generates required pressing force. The vibrating body has an elastic body, an electro-mechanical energy conversion element, and at least one projecting portion. The driven body has a driven base material that is brought into press contact with the vibrating body, and a permanent magnet joined to the driven base material. The driven base material and the elastic body face each other across the permanent magnet in a thickness direction of the elastic body. The permanent magnet is magnetized in the thickness direction of the elastic body. A magnetic action of the permanent magnet on the elastic body and the driven base material brings the projecting portion and the driven base material into press contact with each other in the thickness direction of the elastic body.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: December 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuyuki Kojima
  • Patent number: 10349967
    Abstract: An apparatus comprises a body and a shaft assembly. The shaft assembly is configured to couple with the body such that the shaft assembly extends distally relative to the body. The shaft assembly comprises a tubular member, an acoustic waveguide, and a guiding member. The acoustic waveguide is operable to selectively couple with an ultrasonic transducer assembly. The tubular member is configured to insertingly receive the acoustic waveguide. The acoustic waveguide comprises a guide feature. The guiding member is configured to engage the guide feature of the acoustic waveguide and thereby orient the acoustic waveguide in relation to the tubular member.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: July 16, 2019
    Assignee: Ethicon LLC
    Inventors: John A. Hibner, Thomas B. Remm
  • Patent number: 10325768
    Abstract: Focused acoustic radiation, referred to as tonebursts, are applied to a volume of liquid to generate a set of droplets. In one embodiment, a first toneburst is applied to temporarily raise a mound or protuberance on a free surface of the fluid. After the mound has reached a certain state, at least two additional toneburst can be applied to the protuberance to sequentially eject multiple bursts of multiple droplets. In one embodiment, the state of the mound can be maintained by a sustained acoustic signal, during which time multiple additional tonebursts can be applied to sequentially eject multiple bursts of multiple droplets from the mound.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: June 18, 2019
    Assignee: LABCYTE INC.
    Inventor: Richard G. Stearns
  • Patent number: 10298105
    Abstract: A linear vibrator includes a bracket having a plate shape, a casing having a hexahedral shape with an open bottom and coupled to the bracket, a circuit board on the bracket, a coil on the circuit board, a pair of magnets spaced apart from each other and disposed over the coil at an interval from the coil, a plate having a pair of magnet attachment surfaces attached to top surfaces of the pair of magnets and a connection surface downwardly bent with a step difference from the magnet attachment surfaces and connecting the pair of magnet attachment surfaces, a weight on top of the plate, and a spring on top of the connection surface and formed in a strip shape with two ends secured to the casing and a center portion secured to the connection surface. The spring is bilateral symmetric and has at least a pair of inwardly-bent portions.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: May 21, 2019
    Assignee: EM-TECH, Co., Ltd.
    Inventors: Jong Dae Kim, Keun Yong Hwang
  • Patent number: 10293793
    Abstract: A washer nozzle for a vehicle is provided. The washer nozzle improves an ejection disorder due to external freezing of a washer ejection port that ejects washer fluid. The washer nozzle, removes ice and foreign substances frozen onto the surface of a washer ejection port by utilizing an ultrasonic vibration generated by an ultrasonic transducer disposed within an interior of the washer nozzle. The washer nozzle includes a nozzle cover with washer ejection ports and a nozzle body with washer fluid passages. The ultrasonic transducer is configured to generate an ultrasonic vibration disposed within the nozzle body. The ultrasonic transducer disposed beneath the lower portion of the washer ejection ports is configured to provide ultrasonic vibration toward the washer ejection ports.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: May 21, 2019
    Assignee: Hyundai Motor Company
    Inventor: Jong Min Park
  • Patent number: 10284117
    Abstract: A power conversion device has a buckled wave disk that has an axis and is radially compressed between a hub and a wave ring. The buckled wave disk is buckled in the radial direction to form circumferential waves which are displaced in the axial direction and extending around the buckled wave disk with lines formed of inflection points of the circumferential waves extending between the hub and wave ring. The wave ring is outwardly radially displaced at nodes corresponding to lines formed of inflection points of the circumferential waves. A wave propagation actuator cooperates with the buckled wave disk for driving a wave and the lines formed of inflection points of the circumferential waves around the buckled wave disk. An outer ring surrounds the wave ring, the outer ring being driven by or driving the wave ring at the nodes. A method of making a wave disk is provided.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: May 7, 2019
    Assignee: Genesis Advanced Technology Inc.
    Inventor: James Brent Klassen
  • Patent number: 10249811
    Abstract: A piezoelectric driving device includes a vibrating plate, and a piezoelectric vibrating body including a substrate, and piezoelectric elements provided on the substrate. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric body, and the first electrode, the piezoelectric body, and the second electrode are laminated in this order on the substrate. The piezoelectric vibrating body is installed on the vibrating plate so that the piezoelectric element is interposed between the substrate and the vibrating plate. A wiring pattern including a first wiring corresponding to the first electrode and a second wiring corresponding to the second electrode is formed on the vibrating plate, the first electrode and the first wiring are connected to each other through a first laminated conducting portion, and the second electrode and the second wiring are connected to each other through a second laminated conducting portion.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: April 2, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Tomohisa Iwazaki, Akio Konishi, Kiichi Kajino, Koichi Kamijo, Osamu Miyazawa, Yutaka Arakawa, Daisuke Yamada
  • Patent number: 10177687
    Abstract: An oscillatory wave motor includes a piezoelectric element, an elastic member that includes a projecting portion, a friction member that moves relative to the elastic member and includes a contact surface in contact with the projecting portion, and pressing unit that brings the projecting portion into contact under pressure with the contact surface in a pressing direction that is a direction of a perpendicular line of the contact surface. The projecting portion includes a spherical portion formed in a center of the projecting portion, a contact portion formed on or near a center of the spherical portion, a flat portion formed around the spherical portion, and a corner portion formed around the flat portion. The spherical portion, the flat portion and the corner portion are configured to have a uniform thickness and to have flexibility in the pressing direction with the contact portion as a center.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: January 8, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Oikawa
  • Patent number: 10103650
    Abstract: In a piezoelectric driving device, a load due to flection deformation of a flexible substrate can be prevented from being applied to a piezoelectric element and decrease in driving efficiency of the driving device can be prevented. The flexible substrate of the driving device includes a first fixing portion fixed to the piezoelectric element, a second fixing portion fixed to a holding member, and a bending portion in which the flection deformation is formed with movement of a vibrating plate. The second fixing portion is provided between the first fixing portion and the bending portion along the flexible substrate.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: October 16, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shunsuke Ninomiya
  • Patent number: 10094851
    Abstract: The invention relates to a micro-electromechanical device used as a force sensor, comprising a mobile mass connected to at least one securing zone by means of springs or deformable elements, and means for detecting the movement of the mobile mass, the mobile mass having an outer frame and an inner body, the outer frame and the inner body being connected by at least two flexible portions forming integral decoupling springs on two separate sides of the outer frame.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: October 9, 2018
    Assignees: Tronic's Microsystems, Commissariat A L'Energie Atomique Et Aux Energies Alternatives
    Inventors: Francois-Xavier Boillot, Remi Laoubi, Guillaume Jourdan
  • Patent number: 10075101
    Abstract: A vibration type actuator including a vibrator having an electro-mechanical energy conversion element and an elastic member fixed to the electro-mechanical energy conversion element; a base unit configured to fix the vibrator; a moving body configured to come into press contact with the vibrator and capable of being moved by the vibration; a press member configured to bring the vibrator and the moving body into press contact with each other and transmit a drive force of the moving body to an output unit; and a bearing unit configured to rotatably support the output unit with respect to the base unit, wherein the bearing unit is arranged on an outer peripheral side of the vibrator and the moving body in a direction orthogonal to a direction of rotation axis of the output unit.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kei Suefuji, Takao Mori
  • Patent number: 9962183
    Abstract: A TL/T tip is made by scaling down the dimensions of an L/T tip by the ratio of the TL/T frequency to the L/T frequency so that the TL/T tip can operate by excitement from a transducer at the same frequency that would have produced L/T motion in the L/T tip. A reductive resonator may be included between the transducer and the TL/T tip.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: May 8, 2018
    Inventor: David Wuchinich
  • Patent number: 9921389
    Abstract: A camera module is provided, the camera module including a mover mounted with a lens, a stator movably supporting the mover to an optical axis direction of the lens, and a ball interposed between the mover and the stator, wherein a first rail is provided on the mover to allow a relative movement of the ball to the mover to the optical axis direction, and a second rail is provided on the stator opposite to the first rail to allow a relative movement of the ball to the stator to the optical axis direction, and wherein the ball linearly travels along the optical axis direction when the mover and the stator relatively move.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: March 20, 2018
    Assignee: MDPULSE Co., Ltd.
    Inventor: Jin Kuk Kim
  • Patent number: 9893269
    Abstract: The present invention provides a piezoelectric element that includes a piezoelectric material having first and second surfaces; a common electrode disposed on the first surface; and a plurality of drive phase electrodes, a detection phase electrode, and a non-drive phase electrode disposed on the second surface, the piezoelectric material being sandwiched between the common electrode and the electrodes on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material (1) in portions sandwiched between the drive phase electrodes and the common electrode, an absolute value d(2) of a piezoelectric constant of the piezoelectric material (2) in a portion sandwiched between the detection phase electrode and the common electrode, and an absolute value d(3) of the piezoelectric material (3) in a portion sandwiched between the non-drive phase electrode and the common electrode satisfy d(2)<0.95d(1), d(3)<0.95d(1), and 0.9?d(3)/d(2)?1.1.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: February 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Ifuku, Tatsuo Furuta, Hiroshi Saito, Makoto Kubota, Satoshi Fujita
  • Patent number: 9833812
    Abstract: There is provided a vibration generating device including: a housing having an internal space; a base member installed in the housing to be disposed in a central portion of the housing; a first plate installed on the base member; a first piezoelectric element installed on an upper surface of the first plate; a second piezoelectric element disposed to face the first piezoelectric element through a connection member; a second plate installed on the second piezoelectric element; and a vibration amplifying part installed on an upper surface of the second plate.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: December 5, 2017
    Assignees: MPLUS CO., LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Seung Hyeon Jeong, Hwa Young Oh, Gun Hee Jang, Ja Hyun Nam, Young Jin Kim
  • Patent number: 9827593
    Abstract: There is disclosed an ultrasonic motor having a vibrator that vibrates by a high frequency drive voltage applied thereto, a sliding member that comes in contact frictionally with the vibrator, pressurizing means for pressurizing the vibrator to the sliding member, a base to which the vibrator is fixed, a vibrator support member holding the base, and coupling means for coupling the vibrator with the vibrator support member, the vibrator and the sliding member being relatively moved by the vibration, wherein the coupling means includes the base, the rolling member that freely moves the base to the vibrator support member in a pressurizing direction of the pressurizing means, and an urging member that urges the rolling member in a direction perpendicular to the pressurizing direction of the pressurizing means.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: November 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Harushige Yamamoto
  • Patent number: 9823543
    Abstract: One aspect of the present invention relates to a driver of a vibrator including: a control section; and an alternating current signal generation section configured to generate an alternating current signal based on an output from the control section, and to apply the alternating current signal to the vibrator, wherein the control section is configured to lower a frequency of the alternating current signal, and to change, after the frequency change, at least one of a voltage ratio and a phase difference of the alternating current signal such that the ellipse ratio of the elliptical motion changes from a first ellipse ratio to a second ellipse ratio, the second ellipse ratio has a larger ratio of a component in a moving direction in the elliptical motion to a component in a direction perpendicular to the moving direction in the elliptical motion than the first ellipse ratio.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: November 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akio Atsuta
  • Patent number: 9664647
    Abstract: An ion source for a mass spectrometer is disclosed comprising an ultrasonic transducer which focuses ultrasonic energy onto a surface of a sample fluid without directly contacting the sample fluid.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: May 30, 2017
    Assignee: Micromass UK Limited
    Inventors: Michael Raymond Morris, Steven Derek Pringle, Keith Richardson, Ian Sinclair
  • Patent number: 9621076
    Abstract: A vibration type driving device includes an electro-mechanical energy conversion element; a vibrator fixed to the electro-mechanical energy conversion element and configured to be vibrated by application of voltage to the electro-mechanical energy conversion element; a first driven member and a second driven member frictionally driven by press-contact with the vibrator and configured to transmit rotational forces by frictional driving to an output shaft; and at least one pressing portion configured to bring the first driven member and the second driven member into press contact with the vibrator, wherein the pressing portion, the first driven member, the second driven member, and the vibrator are arranged to allow an air flow generated by an airflow generation unit to flow through an air-ventilation path of the pressing portion, between the first driven member and the second driven member, and an air-ventilation path of the vibrator.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: April 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Oda, Masanori Takahashi
  • Patent number: 9564837
    Abstract: A vibration wave actuator includes a vibrator, a driven element, and a magnet. The vibrator has at least an electro-mechanical energy conversion element and an elastic body to which the electro-mechanical energy conversion element is joined, the elastic body including a contact portion. The driven element is in pressure contact with the contact portion of the vibrator, and includes a magnetic substance. The magnet is arranged such that the vibrator is placed between the driven element and the magnet.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: February 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Oda, Nobuyuki Kojima
  • Patent number: 9506464
    Abstract: A piezoelectric pump includes a leaf spring including a disc portion defining an actuator, an outer frame portion defining a housing, and an elastic support portion. The actuator flexurally vibrates from a center portion of a principal surface thereof to an outer periphery thereof. The elastic support portion includes a beam portion and connection portions and elastically supports the disc portion on the outer frame portion. The beam portion extends in a gap between the disc portion and the outer frame portion in a direction along an outer periphery of the disc portion. A first of the connection portions connects the beam portion to the disc portion. Second and third connection portions are offset from the first connection portion and connect the beam portion to the outer frame portion.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 29, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Atsuhiko Hirata, Yukiharu Kodama, Kenta Omori
  • Patent number: 9366994
    Abstract: A developer container configured to contain developer to be used for image formation, includes a first electrode provided in the developer container, a second electrode provided opposing to the first electrode configured to detect an electrostatic capacitance between the first electrode and the second electrode, to detect a quantity of the developer, a conveyance member provided between the first electrode and the second electrode and on a bottom surface side inside the developer container, and configured to convey the developer contained in the developer container, and a vibration imparting member configured to impart vibration to the conveyance member, wherein the developer on a developer conveyance surface of the conveyance member contacting the developer is conveyed by the vibration of the conveyance member.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 14, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiichi Shinohara, Hiroki Ogino, Kojiro Yasui
  • Patent number: 9356225
    Abstract: An actuator using an electro-active polymer is provided. The actuator includes a vibration plate fixed to an electronic device; at least one electro-active polymer attached to the vibration plate, and activated when electric voltage is applied thereto; and at least one mass joined to at least one a combination member disposed on the vibration plate.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: May 31, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jin-Hyoung Park, Yu-Dong Bae, Eun-Hwa Lee, Dae-Kwang Jung, Ji-Hoon Jung
  • Patent number: 9303624
    Abstract: A novel oscillator comprises a curved sheet structure. The curved sheet structure comprises a curved sheet and a tensioner. The curved sheet structure oscillates when the tensioner of the curved sheet structure is extended between two rigidly or semi rigidly fixed points and the curved sheet structure is exposed to a fluid flow. The oscillation results in oscillating tension in the tensioner and oscillating motion of the tensioner in directions perpendicular and parallel to the direction of fluid flow. Energy conversion devices to couple the energy out of the oscillator include a coupling in line with the tensioner and a coupling generally perpendicular to the extension of the tensioner.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 5, 2016
    Inventor: Richard Neifeld
  • Patent number: 9293685
    Abstract: An electromechanical rotating actuator arrangement (10) includes a stator (20), a rotor (30), a guide arrangement (50) and an object (40) to be moved. The stator (20) has electromechanically active actuators (22), exhibiting shape changes upon excitation, rigidly attached to a common stator block (24). The rotor (30) has a planar drive surface (32). The electromechanically active actuators (22) have a respective driving surface (26), situated in a common plane (27) parallel to the drive surface (32), for mechanical interaction with the drive surface (32) of the rotor (30). The object (40) to be moved is attached to the rotor (30), giving a rigid mechanical connection between the object (40) and the drive surface (32). The guide arrangement (50) is arranged for restricting translational motions of the rotor (30) perpendicular to the rotation axis (12). A method for driving an electromechanical rotating actuator arrangement (10) is also disclosed.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: March 22, 2016
    Assignee: PIEZOMOTOR UPPSALA AB
    Inventors: Mats Bexell, Per Oskar Lithell
  • Patent number: 9247140
    Abstract: A vibration-type driving unit includes a vibrator including an electro-mechanical transducer; a moving body provided with the vibrator; a contact member in contact with the vibrator provided on the moving body; a support member configured to support the contact member; and a moving mechanism configured to move the moving body relative to the support member. The vibrator and the contact member are disposed so that the vibrator moves in a first direction relative to the contact member. The moving mechanism is configured to move the moving body relative to the support member in a second direction intersecting the first direction in a plane parallel to a plane in which the vibrator and the contact member are in contact with each other.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 26, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kaishi Ohashi
  • Patent number: 9154053
    Abstract: A piezoelectric actuator includes: a plurality of first piezoelectric elements; a first member that is interposed between the plurality of first piezoelectric elements and that is driven in a first direction by the plurality of first piezoelectric elements; a second piezoelectric element that is disposed on the first member; and a second member that is disposed in contact with the second piezoelectric element and that is driven in a second direction intersecting the first direction by the second piezoelectric element.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: October 6, 2015
    Assignee: NIKON CORPORATION
    Inventors: Kunihiro Kuwano, Hiromoto Kanamitsu
  • Patent number: 9048758
    Abstract: An electromechanical motor assembly includes a stator, a body to be moved and a stator support. The stator has a plurality of electromechanical actuators for moving the body by repetition of steps ensuring that at least one of the electromechanical actuators is in non-sliding contact with the body at every time. The assembly further includes a force applying arrangement for supplying a normal force (N) between the stator and the stator support by at least one spring arrangement. The spring arrangement has a spring constant in the direction (Z) normal to the surface of the body that is lower than 5% of the ratio between the normal force and the average height uncertainty of the surface of the body. The force applying arrangement includes a lateral fixing plate attached between the stator and the support parallel to the main motion direction (X) and juxtaposed to the surface of the body.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: June 2, 2015
    Assignee: PIEZOMOTOR UPPSALA AB
    Inventors: Per Benkowski, Stefan Johansson
  • Patent number: 8994248
    Abstract: Described is a proximity sensor used by an operation robot that may measure a proximity distance to an object using an ultrasonic wave in a device such as an operation robot, an endoscope, and the like, and a method of operating the proximity sensor which may be used by an operation robot. The proximity sensor used by the operation robot may include an inner wall provided in a circular structure to secure a cavity within the circular structure, a piezoelectric polymer film disposed outside the inner wall to generate an ultrasonic signal, and to sense the ultrasonic signal, and an outer wall disposed outside the piezoelectric polymer film to propagate the ultrasonic signal via an open window, thereby preventing a collision between devices or an unnecessary contact, and providing a more stable operation environment.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung Kew Lee, Joon Ah Park
  • Publication number: 20150084482
    Abstract: A device able to generate electrical power through relative rotational motion of first (370, 380) and second (200, 230) principal components around an axis of rotation (220); wherein: the first and second principal components comprise an arrangement of piezoelectric elements (380) and permanent magnets (230, 370) such that the interaction between these magnets and piezoelectric elements, in use, makes it possible to generate electricity; and wherein: the second principal component (200, 230) comprises a centre of mass offset from the axis of relative rotation (220) such that the response of the second principal component (200, 230) to either gravitational or inertial forces is a relative rotation of the second principal component (200, 230) in relation to the first principal component (370, 380); the first principal component (370, 380) being fixedly attached to the moving host structure (100).
    Type: Application
    Filed: May 3, 2013
    Publication date: March 26, 2015
    Applicant: IMPERIAL INNOVATIONS LIMITED
    Inventors: Eric Morgan Yeatman, Andrew Sean Holmes, Pit Pillatsch
  • Patent number: 8981619
    Abstract: A vibration type actuator providing a satisfactory actuator performance even when an increase in speed is achieved and having a contact spring. The actuator includes a vibrator equipped with an electrical-mechanical energy conversion element, an elastic member to which the electrical-mechanical energy conversion element is fixed, and a protrusion provided on the elastic member. The vibrator can generate an elliptic movement in the protrusion. A driven body is configured to come into contact with the protrusion and to make a relative movement with respect to the vibrator. The protrusion includes a contact portion having a contact surface contacting the driven body, a continuous side wall portion protruding with respect to one end surface of the elastic member and forming a hollow structure, and a connection portion connecting the contact portion and the side wall portion and exhibiting flexibility in a direction normal to the contact surface.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: March 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Kimura
  • Patent number: 8970089
    Abstract: A drive device includes a movable member, plural piezoelectric motors that cause the movable member to move in a predetermined direction, a drive circuit that drives the plural piezoelectric motors, and plural relays that electrically connect or disconnect at least one of the plural piezoelectric motors to or from the drive circuit.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: March 3, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Osamu Urano
  • Publication number: 20150015116
    Abstract: A linear resonant actuator includes: (a) an electromechanical polymer (EMP) actuator; (b) a substrate having a first surface and a second surface, the EMP actuator being mounted on the first surface of the substrate; (c) clamping structure provided on two sides of the substrate so as to allow the substrate to vibrate freely between the two sides of the substrate, in response to an electrical stimulation of the EMP actuator; and (d) an inertial mass element having a contact surface for attaching to the substrate at the second surface of the substrate. The inertial mass element may include contact structures provided to attach to the substrate along thin parallel lines. In one embodiment, the inertial mass element may have a “T” shape, or any suitable shape for stability.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 15, 2015
    Inventor: Li JIANG
  • Publication number: 20150008793
    Abstract: There is provided a vibrator including: a housing including an internal space; an elastic member mounted within the internal space so as to be elastically deformed; and a piezo actuator mounted on one surface of the elastic member, wherein the elastic member includes a reinforcement emboss protruding toward a surface opposite to a surface on which the piezo actuator is mounted in a portion on which the piezo actuator is mounted.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 8, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yun Yeong Park, Dong Woo Rhee, Dong Yeon Shin
  • Patent number: 8928204
    Abstract: Disclosed herein is a piezoelectric vibration module including a vibration plate that is surrounded by an upper case and a lower case, and includes a first stopper capable of preventing direct collision between a piezoelectric element and an internal constituent member, for example, an upper plate while vibrating linearly therein. In particular, the piezoelectric vibration module may further include a second stopper in the lower case.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: January 6, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dae Woong Yun, Dong Sun Park, Jae Kyung Kim, Joon Choi, Yeon Ho Son
  • Patent number: 8910727
    Abstract: The invention provides a novel jackhammer that utilizes ultrasonic and/or sonic vibrations as source of power. It is easy to operate and does not require extensive training, requiring substantially less physical capabilities from the user and thereby increasing the pool of potential operators. An important safety benefit is that it does not fracture resilient or compliant materials such as cable channels and conduits, tubing, plumbing, cabling and other embedded fixtures that may be encountered along the impact path. While the ultrasonic/sonic jackhammer of the invention is able to cut concrete and asphalt, it generates little back-propagated shocks or vibrations onto the mounting fixture, and can be operated from an automatic platform or robotic system.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: December 16, 2014
    Assignee: California Institute of Technology
    Inventors: Yoseph Bar-Cohen, Stewart Sherrit, Jack L. Herz
  • Patent number: 8912708
    Abstract: An electromechanical motor includes an actuator assembly and a body to be driven in a driving direction. The actuator assembly has an actuator backing, a first actuator and a second actuator. The actuators are mechanically attached by a respective single attachment to the actuator backing at a first end of the actuators. The actuators have a respective interaction portion constituting a second end opposite to the first end in an actuator direction transverse to the driving direction. The interaction portions are arranged for interaction with an interaction surface of the body by a respective contact area. The actuators include a respective unimorph member arranged for causing a movement of the respective contact area as a response of a respective electrical signal. The respective movements are transverse to the actuator direction, to the driving direction, and to each other.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: December 16, 2014
    Assignee: PiezoMotor Uppsala AB
    Inventor: Stefan Johansson
  • Publication number: 20140346926
    Abstract: A vibration generating apparatus may include a housing having an internal space, an elastic member mounted in the internal space, a piezoelectric element having one surface thereof mounted on the elastic member, and a mass body fixed to the other surface of the piezoelectric element by a buffering adhesive.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 27, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Joon CHOI, Jae Kyung KIM, Sang Jin LEE, Dong Su MOON
  • Patent number: 8890390
    Abstract: A vibration-wave driving device includes a vibrator having an electromechanical-energy converting element, and a moving mechanism configured to allow the vibrator to move relative to a movable body, in a plane parallel to a plane where the vibrator and the movable body are in contact, in a second direction intersecting with a first direction being a direction of a driving force produced by the vibrator. The moving mechanism includes a guide member that regulates a moving direction of the vibrator, and the guide member includes a member having a rollable curved portion.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kaishi Ohashi
  • Publication number: 20140333178
    Abstract: Disclosed is piezoelectric vibrator including a piezoelectric vibrator unit. The piezoelectric vibrator has a vibrating portion, a mass attached on the vibrating portion and having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion, and a holder having a stopping portion disposed between the extending portion of the mass and the vibrating portion. A distance from the extending portion to the at least one stopping portion is less than the amplitude of the vibration portion for limiting the vibrating portion and avoiding excessive amplitude of the vibrating portion.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 13, 2014
    Applicant: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Lin Liu, Zhiyong Tan
  • Publication number: 20140333179
    Abstract: There is provided a vibration generating apparatus including: a piezoelectric element fixedly attached to a vibration transfer member and expanded and contracted in a direction from an inner surface thereof toward an outer surface thereof or in a direction from the outer surface thereof toward the inner surface thereof when power is applied thereto; and a vibration element connected to the piezoelectric element to vibrate.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 13, 2014
    Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Hwa Young Oh, Seung Hyeon Jeong, Gun Hee Jang, Ja Hyun Nam, Tae Heum Yeon, Young Jin Kim
  • Publication number: 20140306576
    Abstract: A displacement amplifier receives an actuation displacement signal from a piezoelectric actuator. The displacement signal is amplified by one or more stages of compliant elements, and a corresponding force is applied to a load. Wide frequency response is achieved in response to the resilience characteristics of the compliant elements that are formed from any of several materials, illustratively aluminum, steel, titanium, plastics, composites, etc., and are produced by any of several manufacturing techniques, illustratively extrusion, die casting, forging, etc. The compliant elements can be configured as plural compliant mechanical displacement amplifier stages. In bilateral arrangements displacement signals from distal ends of the motive source are applied to symmetrical, or mirror image, arrangements of compliant elements. The motive source, which may be a piezoelectric actuator, delivers its displacement signal at one end thereof to one or more compliant elements.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 16, 2014
    Applicant: FlexSys, Inc.
    Inventors: James D. Ervin, Dragan Maric, Gregory F. Ervin, Sridhar Kota, Joel A. Hetrick