Patents by Inventor Masaki MISUNO

Masaki MISUNO 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: 11878673
    Abstract: A cutoff valve comprises a coil wound around an outer periphery of a bobbin, a cylinder in contact with a protruding portion formed in an inner side of the bobbin, and an armature disposed inside the cylinder and moved in a winding axis direction of the coil by energization of the coil.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiromasa Yamasaki, Masaki Misuno, Chiharu Nakazawa
  • Publication number: 20210206360
    Abstract: A cutoff valve comprises a coil wound around an outer periphery of a bobbin, a cylinder in contact with a protruding portion formed in an inner side of the bobbin, and an armature disposed inside the cylinder and moved in a winding axis direction of the coil by energization of the coil.
    Type: Application
    Filed: May 21, 2019
    Publication date: July 8, 2021
    Inventors: Hiromasa YAMASAKI, Masaki MISUNO, Chiharu NAKAZAWA
  • Patent number: 10883492
    Abstract: Provided is a plunger pump where quietness can be ensured. A plunger pump includes a cylinder, a piston, a discharge valve, and a plug member. The plug member includes: a recessed portion formed on a circumferential wall of a discharge chamber opposing an outer periphery of the discharge valve in a radial direction; and a discharge passage disposed at a position different from the recessed portion, formed on the circumferential wall of the discharge chamber opposing the outer periphery of the discharge valve in the radial direction, and connecting the discharge chamber and the outside with each other.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: January 5, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masaki Misuno, Chiharu Nakazawa, Atsuki Oohira
  • Publication number: 20190242376
    Abstract: Provided is a plunger pump where quietness can be ensured. A plunger pump includes a cylinder, a piston, a discharge valve, and a plug member. The plug member includes: a recessed portion formed on a circumferential wall of a discharge chamber opposing an outer periphery of the discharge valve in a radial direction; and a discharge passage disposed at a position different from the recessed portion, formed on the circumferential wall of the discharge chamber opposing the outer periphery of the discharge valve in the radial direction, and connecting the discharge chamber and the outside with each other.
    Type: Application
    Filed: September 4, 2017
    Publication date: August 8, 2019
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masaki MISUNO, Chiharu NAKAZAWA, Atsuki OOHIRA
  • Publication number: 20190234454
    Abstract: A plunger pump having improved durability without leading to a reduction in productivity is provided. A pump apparatus includes a sliding portion provided between a stopper portion and an eccentric cam in a direction of an eccentric central axis and having a lower frictional coefficient between the sliding portion and the eccentric cam than a frictional coefficient between the stopper portion and the eccentric cam.
    Type: Application
    Filed: September 15, 2017
    Publication date: August 1, 2019
    Inventors: Atsuki OOHIRA, Masaki MISUNO, Chiharu NAKAZAWA
  • Publication number: 20180257622
    Abstract: Provided is a pump device capable of suppressing an increase in size of a housing. The pump device includes: a housing including therein an oil passage and a pump; a motor configured to drive the pump; a motor mounting surface which is formed on one side surface of the housing, and to which the motor is mounted; a first port which is formed on the motor mounting surface, and to which a pipe connected to a master cylinder is mounted; a first surface formed so as to continue to the motor mounting surface, and including a second port to which a pipe connected to a wheel cylinder is mounted; a second surface formed so as to continue to the motor mounting surface and the first surface; and a third port which is formed on the second surface, and to which a pipe connecting an external device and the oil passage to each other is fixed.
    Type: Application
    Filed: August 3, 2016
    Publication date: September 13, 2018
    Inventors: Masayuki SAITO, Chiharu NAKAZAWA, Masaki MISUNO
  • Publication number: 20180162332
    Abstract: An object of the present invention is to provide a brake apparatus capable of acquiring a desired brake hydraulic pressure when an opening failure has occurred in a shut-off valve. The brake apparatus includes a first pump configured to supply brake fluid to a hydraulic circuit connecting a master cylinder and a wheel cylinder to each other, a first shut-off valve provided between a discharge portion of the first pump in the hydraulic circuit and the master cylinder, and a second shut-off valve provided between the first shut-off valve and the master cylinder.
    Type: Application
    Filed: May 19, 2016
    Publication date: June 14, 2018
    Inventors: Chiharu NAKAZAWA, Masaki MISUNO
  • Publication number: 20180037203
    Abstract: An object of the present invention is to provide a hydraulic control apparatus and a brake system capable of preventing or cutting down a cost increase. According to one aspect of the present invention, a hydraulic control apparatus includes a hydraulic source provided inside a housing and configured to generate a hydraulic pressure in a hydraulic generation unit mounted on a wheel via an oil passage, a switching electromagnetic valve provided integrally in the housing and configured to be used to permit an inflow of brake fluid into a stroke simulator provided separately from the housing and configured to generate a reaction force of a brake pedal operation performed by a driver, and a control unit provided integrally in the housing and configured to be used to drive the hydraulic source and the switching electromagnetic valve.
    Type: Application
    Filed: February 3, 2016
    Publication date: February 8, 2018
    Inventors: Ryohei MARUO, Chiharu NAKAZAWA, Masaki MISUNO
  • Publication number: 20160312912
    Abstract: An object of the present invention is to provide an electromagnetic valve and a brake unit capable of improving controllability while leading to no or a less increase in the size and no or less deterioration of the efficiency. An electromagnetic valve includes a movable element configured to close a flow passage by abutting against a seat portion when being not actuated, a stator disposed at a position in an axial direction of the movable element, a coil configured to generate an electromagnetic force so as to cause a stroke of the movable element in a direction away from the seat portion, and a plate-shaped spring member configured to bias the movable element toward the seat portion.
    Type: Application
    Filed: December 3, 2014
    Publication date: October 27, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Chiharu NAKAZAWA, Masaki MISUNO