Patents by Inventor Hirotaka Umeda

Hirotaka Umeda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11972071
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: April 30, 2024
    Assignee: Japan Display Inc.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20240120780
    Abstract: A rotary electric machine includes a rotor core and a stator core. The rotor core includes a steel plate laminated in an axial direction of a rotation shaft of a rotor. The stator core is provided outside an outer periphery of the rotor core and includes a steel plate laminated in the axial direction. An average plate thickness of the steel plate of the stator core is smaller than an average plate thickness of the steel plate of the rotor core. In the steel plate of the stator core, a plate thickness of a portion between a predetermined position and a radially outer edge in a radial direction around the rotation axis is smaller than a plate thickness of a portion between the predetermined position and a radially inner edge in the radial direction.
    Type: Application
    Filed: October 9, 2023
    Publication date: April 11, 2024
    Inventors: Keiji KONDO, Toshihiro TAKEI, Atsushi UMEDA, Hirotaka KUROZAKI
  • Patent number: 5860323
    Abstract: A variable-pitch racked bar has a row of rack teeth with a middle fixed pitch region and two end fixed pitch regions. A variable-pitch region is interposed between the middle fixed pitch region and each of the end fixed pitch regions. In the variable-pitch region, the pitch increases from the fixed, small-pitch middle region toward the fixed, large-pitch end regions. In the variable-pitch racked bar, the effective meshing width continuously decreases from the middle of the row of rack teeth toward both ends thereof.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: January 19, 1999
    Assignee: TRW Steering Systems Japan Co. Ltd
    Inventors: Ichiro Mizutani, Hirotaka Umeda
  • Patent number: 5076605
    Abstract: In a stabilizer including a middle portion which acts as a torsion bar. One end of the middle portion is supported by a wheel through a vertical stabi-link. A connector is disposed between the middle portion and the wheel. The connector is adapted to regulate the action of the middle portion. The connector includes a housing connected with the stabi-link. A ring is secured with the end of middle portion and rotatably supported in the housing. A recess is formed on the ring. A rod engages with the recess. An actuator acts on the rod. A controller controls the force of the actuator to control the rotatable angle between the end of the middle portion and the stabi-link.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: December 31, 1991
    Assignee: TRW Steering & Industrial Products (Japan) Co., Ltd.
    Inventor: Hirotaka Umeda
  • Patent number: 4966192
    Abstract: The rotary directional control valve comprises a ring mechanism which is formed in the inner peripheral surface thereof with ball fitting grooves which cooperate with the ball fitting groove or grooves of the input shaft through first balls to regulate the relative position of the ring mechanism with respect to the input shaft in a radial direction thereof and on an end surface thereof with cam surfaces which cooperate with the cam surfaces of the outer valve through second balls to restrict the rotation of the input shaft in the circumferential direction thereof with respect to the outer valve. The ring mechanism includes a ring member which is formed with the cam surfaces on one end surface thereof and rotatable in the circumferential direction with respect to the input shaft and, in addition, a fixing part for fixing the ring member to the input shaft in a condition that the input shaft is set in its prescribed angular position with respect to the outer valve.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: October 30, 1990
    Assignee: TRW Steering & Industrial Products Co., Ltd.
    Inventor: Hirotaka Umeda