Patents by Inventor Kazuaki NEMOTO

Kazuaki NEMOTO 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: 11396832
    Abstract: A valve timing adjusting device includes an intake variable valve mechanism and an exhaust variable valve mechanism. The exhaust variable valve mechanism includes an exhaust electric driving portion and an exhaust phase shifting portion including an input shaft. The exhaust phase shifting portion is disposed in a rotation transmission path between an exhaust camshaft and a crankshaft and configured to shift a rotation phase of the exhaust camshaft. The input shaft rotates in a rotational direction opposite to a rotational direction of the crankshaft when advancing the rotation phase. A phase of the exhaust phase shifting portion is configured to be shifted to a most advanced angle phase when the exhaust electric driving portion is de-energized or fails and when the exhaust phase shifting portion receives a torque in a forward rotational direction.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: July 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Nemoto, Akio Imai
  • Publication number: 20210222593
    Abstract: A valve timing adjusting device includes an intake variable valve mechanism and an exhaust variable valve mechanism. The exhaust variable valve mechanism includes an exhaust electric driving portion and an exhaust phase shifting portion including an input shaft. The exhaust phase shifting portion is disposed in a rotation transmission path between an exhaust camshaft and a crankshaft and configured to shift a rotation phase of the exhaust camshaft. The input shaft rotates in a rotational direction opposite to a rotational direction of the crankshaft when advancing the rotation phase. A phase of the exhaust phase shifting portion is configured to be shifted to a most advanced angle phase when the exhaust electric driving portion is de-energized or fails and when the exhaust phase shifting portion receives a torque in a forward rotational direction.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 22, 2021
    Inventors: Kazuaki NEMOTO, Akio IMAI
  • Patent number: 10557386
    Abstract: A joint includes a rotation transmitting portion and a stopper portion. The rotation transmitting portion abuts on a relative rotating portion in a circumferential direction. The stopper portion is capable of abutting on the relative rotating portion to restrict an axial position of the relative rotating portion. The stopper portion of the joint which rotates at the same speed as the relative rotating portion restricts an axial position of the relative rotating portion, whereby a sliding movement does not occur between the relative rotating portion and the stopper portion. It can be restricted that a power transmission efficiency is decreased and an abrasive wear is generated.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 11, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Nemoto, Hiroshi Okada
  • Publication number: 20190120092
    Abstract: A joint includes a rotation transmitting portion and a stopper portion. The rotation transmitting portion abuts on a relative rotating portion in a circumferential direction. The stopper portion is capable of abutting on the relative rotating portion to restrict an axial position of the relative rotating portion. The stopper portion of the joint which rotates at the same speed as the relative rotating portion restricts an axial position of the relative rotating portion, whereby a sliding movement does not occur between the relative rotating portion and the stopper portion. It can be restricted that a power transmission efficiency is decreased and an abrasive wear is generated.
    Type: Application
    Filed: October 15, 2018
    Publication date: April 25, 2019
    Inventors: Kazuaki NEMOTO, Hiroshi OKADA
  • Patent number: 9528400
    Abstract: A valve timing control apparatus includes: a rear plate; a housing fixed to the rear plate; and a vane rotor which is able to rotate relative to the housing. The vane rotor includes a rotor and a vane extending from the rotor outward in a radial direction to divide an oil pressure chamber of the housing into an advance chamber and a retard chamber. The vane has an axial end surface adjacent to the rear plate and a radially outer surface. A first chamfer part is defined at a connection between the axial end surface and the radially outer surface of the vane so as to reduce a surface pressure applied from the rear plate to the vane.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: December 27, 2016
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Nemoto, Tadao Ikihara
  • Publication number: 20150053156
    Abstract: A valve timing control apparatus includes: a rear plate; a housing fixed to the rear plate; and a vane rotor which is able to rotate relative to the housing. The vane rotor includes a rotor and a vane extending from the rotor outward in a radial direction to divide an oil pressure chamber of the housing into an advance chamber and a retard chamber. The vane has an axial end surface adjacent to the rear plate and a radially outer surface. A first chamfer part is defined at a connection between the axial end surface and the radially outer surface of the vane so as to reduce a surface pressure applied from the rear plate to the vane.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 26, 2015
    Inventors: Kazuaki NEMOTO, Tadao IKIHARA
  • Publication number: 20130048112
    Abstract: A fluid control valve includes adjacent filters located adjacent to each other in an axis direction of a sleeve and extending in a circumference direction of the sleeve. Each of the filters has a collecting portion covering a corresponding fluid port, a combine section at which a first end portion and a second end portion are combined with each other in the circumference direction, and a connector portion connecting the collecting portion to the first end portion in the circumference direction. The collecting portion of one of the adjacent filters and the connector portion of the other of the adjacent filters are located adjacent with each other in the axis direction. The combine sections of the adjacent filters are located with each other in the axis direction.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 28, 2013
    Applicant: DENSO CORPORATION
    Inventors: Kazuaki NEMOTO, Tadao IKIHARA