Patents Examined by Emily P Pham
  • Patent number: 11515743
    Abstract: An electric motor includes a stator assembly including a lamination stack, a printed circuit board assembly (PCBA), and a plurality of windings. The PCBA is coupled to the lamination stack at a first axial end of the stator assembly. The windings are wrapped about the lamination stack to form coils. Each winding includes crossover portions extending about a portion of a circumference of the stator assembly to connect pairs of opposite coils. The crossover portions are located at a second axial end of the stator assembly opposite the first axial end.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: November 29, 2022
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Andrew T. Beyerl, Derek J. Schwab
  • Patent number: 11515811
    Abstract: A vibration-type actuator includes a vibrating body including an annular elastic member and an electric-mechanical energy conversion element, and an annular contact body configured to move relative to the vibrating body. The contact body includes a base portion, a support portion annularly extending from the base portion in a radial direction of the contact body, and a friction member provided at the support portion, formed separately from the support portion, and being in contact with the vibrating body. The friction member includes a first part extending in a direction along a central axis of the annular contact body, and a second part extending in the radial direction, the first part and the second part being connected to the support portion. The first part includes a portion that is connected by being either internally or externally fitted to the support portion in the radial direction.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: November 29, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Tsuchiya
  • Patent number: 11515812
    Abstract: A control method for a piezoelectric drive device includes a first step of executing first control to decrease a frequency of a drive voltage applied to a piezoelectric vibrator from a predetermined first frequency while acquiring a pickup voltage representing vibration amplitude of the piezoelectric vibrator, and a second step of executing second control to increase the frequency of the drive voltage applied to the piezoelectric vibrator to a second frequency as a frequency of the drive voltage applied before a second time when the pickup voltage is higher from a first time to the second time and the pickup voltage is lower from the second time to a third time.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: November 29, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kiichi Kajino
  • Patent number: 11510647
    Abstract: A backing member includes: a resin body including a lower surface and an upper surface opposite to each other; a plurality of leads each of which extends in a first direction from the lower surface toward the upper surface, and that are embedded at pitches in the resin body; and a plurality of insulating spacers each of which is provided between adjacent ones of the leads and extends in a second direction intersecting with the first direction, and that contact the leads.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 29, 2022
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Sumihiro Ichikawa
  • Patent number: 11509243
    Abstract: To make it possible to freely move a moving body between level surfaces located at different heights that are not connected by a vertical member. A moving body includes a movable moving part, an expansion/contraction part disposed in the moving part and configured to expand and contract in a vertical direction, a first engagement part disposed at a tip of the expansion/contraction part and configured to engage with a member located in a surrounding environment, and a control unit configured to control the moving part and the expansion/contraction part. The control unit moves the moving part to a target height position by engaging the first engagement part with a member located at the target height position and then expanding or contracting the expansion/contraction part.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: November 22, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kunihiro Iwamoto, Yuta Itozawa, Hirotaka Komura
  • Patent number: 11504091
    Abstract: An imaging assembly for an intraluminal device is provided. In one embodiment, the imaging assembly includes: an array of ultrasound transducer elements spaced apart by air kerfs; a plurality of buffer elements surrounding the array of ultrasound transducer elements, wherein the plurality of buffer elements are spaced apart by gaps; and a sealing material filling portions of the gaps between the plurality of buffer elements.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: November 22, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Wojtek Sudol, Anjali Saini, Junho Song, Hyunggyun Lee, Mike Lavy
  • Patent number: 11508898
    Abstract: Piezoelectric devices are described fabricated in packaging buildup layers. In one example, a package has a plurality of conductive routing layers and a plurality of organic dielectric layers between the conductive routing layers. A die attach area has a plurality of vias to connect to a microelectronic die, the vias connecting to respective conductive routing layers. A piezoelectric device is formed on an organic dielectric layer, the piezoelectric device having at least one electrode coupled to a conductive routing layer.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 22, 2022
    Assignee: Intel Corporation
    Inventors: Feras Eid, Shawna M. Liff
  • Patent number: 11509232
    Abstract: A power converter includes a rectifier configured to rectify an AC voltage supplied from an AC power supply, a booster circuit configured to boost the voltage rectified by the rectifier, a smoothing capacitor configured to smooth the voltage output from the booster circuit, a power module configured to convert a DC voltage obtained by smoothing the output voltage by the smoothing capacitor into an AC voltage, and a snubber capacitor configured to absorb a surge voltage superimposed on the DC voltage to be input to the power module. The snubber capacitor is mounted in the power module.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: November 22, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenta Yuasa, Akihiro Tsumura, Shigeo Takata, Shinsaku Kusube
  • Patent number: 11502627
    Abstract: A piezoelectric drive device includes a vibrator having a vibrating portion including a piezoelectric element, and a convex portion placed in the vibrating portion, an urging member including a base, a holding portion holding the vibrator, and a spring portion coupled to the base at one end and coupled to the holding portion at another end and urging the convex portion toward a driven unit, wherein d1>d2 in a natural state in which the vibrator is not urged by the urging member, where a separation distance between the one end and the convex portion along directions of the longitudinal direction is d1 and a separation distance between the other end and the convex portion is d2, and |d1?d2| in an urging state in which the vibrator is urged toward the driven unit by the urging member is smaller than |d1?d2| in the natural state.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: November 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yusaku Nakamura, Daisuke Nakanishi, Yudai Okamae
  • Patent number: 11502623
    Abstract: A piezoelectric actuator includes a vibrating section including a piezoelectric element, a distal end face, and a recess opened on the distal end face and a protrusion section including a base that overlaps the recess in plan view of the distal end face and is fixed to the distal end face and a projection that is provided in the base and projects in an opposite direction of the distal end face, the protrusion section transmitting a driving force of the vibrating section to a driven section. In plan view of the distal end face, the projection is disposed within a range of the recess.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: November 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Tomoaki Takahashi
  • Patent number: 11502626
    Abstract: A piezoelectric motor includes a piezoelectric actuator, a holding member that holds the piezoelectric actuator, a housing in which the piezoelectric actuator and the holding member are placed, a first positioning pin that positions the holding member and the housing, and a first fixing part that fixes the first positioning pin. In the piezoelectric motor, the first positioning pin is fixed to one of the holding member and the housing, and a first hole portion in which the first positioning pin is placed is provided in the other of the holding member and the housing. The first fixing part fixes relative positions of the first hole portion and the first positioning pin.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: November 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yudai Okamae, Tomohisa Iwazaki, Yutaka Arakawa
  • Patent number: 11502625
    Abstract: A vibration wave motor includes a vibrator including a piezoelectric element and a vibratory plate, a friction member configured to make a frictional contact with the vibrator, a pressurizer configured to press the vibrator and the friction member against each other, and a guide unit configured to guide a relative movement between the vibrator and the friction member. The guide unit includes a plurality of rollers configured to move relative to the pressurizer, and a guide member that includes a guide portion, the guide portion being configured to extend along a relative movement direction between the vibrator and the friction member and to guide the plurality of rollers. The guide member includes a reinforcer configured to extend along the relative movement direction near a roller closest to a center position of a pressing force by the pressurizer.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: November 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasufumi Yamamoto
  • Patent number: 11489104
    Abstract: An electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology is provided. An upper guiding component is installed inside the upper rigid frame, a lower guiding component is installed inside a lower rigid component, a guide rod is nested inside the upper guiding component and the lower guiding component, an upper idler wheel mechanism and a lower idler wheel mechanism are fixedly sleeved on the guide rod and are positioned between the upper guiding component and the lower guiding component respectively, an electromagnetic mechanism is fixedly sleeved outside the guide rod, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, and the piezoelectric cantilever beams and the electromagnetic mechanism are connected with a circuit system respectively.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: November 1, 2022
    Assignee: Shanghai University
    Inventors: Huayan Pu, Dong Zhang, Min Wang, Jun Luo, Yi Sun, Chaoqun Duan, Shunqi Zhang, Yan Peng, Shaorong Xie
  • Patent number: 11489461
    Abstract: A thin film actuator having transversely oriented structural stiffeners that serve to increase actuation stroke that results from longitudinal curvature. The thin film actuator may be deployed within electromechanical devices such that an actuatable deflection of a tip of the actuator plate produces the actuation stroke. The thin film actuator may include an actuator plate affixed to a substantially rigid frame structure. The actuator plate protrudes along a longitudinal axis away from the frame structure such that the actuator plate is cantilevered from the frame structure by some distance along this longitudinal axis. The thin film actuator includes a piezoelectric film on a surface of the actuator plate. Activation of the piezoelectric film generates tensile stress or compressive stress at the surface, thereby inducing a bending moment that causes the actuator plate to undergo longitudinal curvature and some lesser degree of transverse curvature.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: November 1, 2022
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Risto Heikki Mutikainen, Tommi Riekkinen, Marco Mattila, Nikolay Chekurov
  • Patent number: 11489440
    Abstract: The present invention discloses a power factor correction circuit. The power factor correction circuit includes: a first bridge arm having a first switch and a second switch; a second bridge arm having a third switch and a fourth switch; a first inductor and a second inductor; a first capacitor and/or a second capacitor connected with a common point between the second inductor and the first inductor; and a third capacitor and/or a fourth capacitor, the third capacitor connected in parallel to the third switch based on an arrangement of the second capacitor and having a capacitance value same as that of the second capacitor, the fourth capacitor connected in parallel to the fourth switch based on an arrangement of the first capacitor and having a capacitance value same as that of the first capacitor.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: November 1, 2022
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Haibin Song, Jian Zhou, Qi Fu, Daofei Xu, Jinfa Zhang
  • Patent number: 11482660
    Abstract: A metal stack for templating the growth of AlN and ScAlN films is disclosed. The metal stack comprises one, two, or three layers of metal, each of which is compatible with CMOS post-processing. The metal stack provides a template that promotes the growth of highly textured c-axis {002} AlN and ScAlN films. The metal stacks include one or more metal layers with each metal layer having either a hexagonal {002} orientation or a cubic {111} orientation. If the metal stack includes two or more metal layers, the layers can alternate between hexagonal {002} and cubic {111} orientations. The use of ScAlN results in a higher piezoelectric constant compared to that of AlN for ScAlN alloys up to approximately 44% Sc. The disclosed metal stacks resulted in ScAlN films having XRD FWHM values of less than approximately 1.1° while significantly reducing the formation of secondary grains in the ScAlN films.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: October 25, 2022
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Giovanni Esteves, Erica Ann Douglas, Michael David Henry, Benjamin Griffin, Morgann Berg
  • Patent number: 11480752
    Abstract: A piezoelectric driving device includes: a driving portion to be brought into frictional contact with an object to be driven, which is moved with respect to a fixed body; and at least two piezoelectric portions, which are formed integrally with the driving portion, are arranged on a predetermined plane with the driving portion being sandwiched between the at least two piezoelectric portions, and are configured to be bent with respect to the predetermined plane when voltages are applied to the at least two piezoelectric portions, wherein outer edges of entirety of the at least two piezoelectric portions are fixed to the fixed body.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: October 25, 2022
    Assignee: NEW SHICOH MOTOR CO., LTD.
    Inventors: Kokichi Terajima, Masahiro Akatsu, Kei Onodera
  • Patent number: 11476779
    Abstract: A drive control device includes: a vibration wave drive device that includes an elastic body, a vibration body including an electro-mechanical energy conversion element, and a contact body in contact with the vibration body, and a control unit of the vibration wave drive device. The drive control device includes: a first detector configured to detect an electric current that is supplied to the vibration wave drive device or consumed electric power, and a second detector configured to detect relative positions or relative speed of the vibration body and the contact body. A control mode in which the vibration wave drive device is decelerated on a basis of a detection result obtained by the first and/or the second detector is included.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: October 18, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Akio Atsuta
  • Patent number: 11476771
    Abstract: A system and a method for power conversion. The system includes a rectifier; an inverter; a DC-link capacitor coupled between the rectifier and the inverter; and a controller. The controller is configured to obtain a current value at an output of the inverter and a voltage value across the DC-link capacitor, determine an average component and a fluctuating component of an output voltage of the inverter based on the obtained current value and the voltage value, and determine a current reference for controlling the rectifier based on the average component and the fluctuating component of the output voltage.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: October 18, 2022
    Assignee: ABB SCHWEIZ AG
    Inventors: Ke Dai, Derong Lin, Chengjing Li, Tian Tan, Tinho Li, Kai Tian
  • Patent number: 11476403
    Abstract: There is provided a control method for a piezoelectric driving device including a vibrating body including a piezoelectric element for driving and configured to vibrate when a driving signal is applied to the piezoelectric element for driving, a section to be driven that is driven by the vibration of the vibrating body, and a driving-signal generating section configured to generate the driving signal using a pulse signal generated based on a target pulse duty ratio. When the target pulse duty ratio is smaller than a predetermined value, the driving signal generated by the driving-signal generating section is an intermittently generated periodic signal.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: October 18, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hidetoshi Saito