Patents by Inventor Ritsurou Hiramatsu

Ritsurou Hiramatsu 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).

  • Publication number: 20230032685
    Abstract: A rotor includes a permanent magnet, which is inserted in a magnet receiving hole of a rotor core and is shaped in a form of a mountain fold that is convex toward a radially inner side. A manufacturing device for the rotor includes a magnetizing device that magnetizes the inserted permanent magnet from an outside of the rotor. The magnetizing device includes: a first magnetizing unit that is placed on one side of the rotor in an axial direction and includes a magnetizing coil which supplies a magnetizing magnetic flux to the permanent magnet; and a second magnetizing unit that is placed on another side of the rotor in the axial direction and includes a magnetizing coil which supplies a magnetizing magnetic flux to the permanent magnet.
    Type: Application
    Filed: October 11, 2022
    Publication date: February 2, 2023
    Applicant: DENSO CORPORATION
    Inventors: Masaru HARADA, Ritsurou HIRAMATSU, Toshihiro UCHIDA
  • Publication number: 20230017419
    Abstract: An apparatus for manufacturing a rotor includes a magnetizer. The magnetizer is configured to magnetize a permanent magnet in a rotor from outside the rotor. The rotor includes a rotor core having a magnet insertion hole. The permanent magnet is provided in an embedded state in the magnet insertion hole and has a bent-back shape protruding radially inward. The magnetizer includes a first yoke portion, a second yoke portion, and a magnetization coil. The first yoke portion has an opposing portion facing an outer peripheral surface of the rotor. The second yoke portion forms a magnetic path together with the first yoke portion. The magnetization coil is disposed on the magnetic path of the first and second yoke portions. The magnetizer magnetizes the permanent magnet by energizing the magnetization coil to apply a magnetizing magnetic flux at least through the rotor between the first yoke portion and the second yoke portion, which are located opposed to each other in a radial direction of the rotor.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Applicant: DENSO CORPORATION
    Inventors: Masaru HARADA, Ritsurou HIRAMATSU, Toshihiro UCHIDA
  • Patent number: 10883302
    Abstract: An opening-closing body driving motor includes a motor body, a drive circuit, and a control circuit. The motor body is provided to automatically open and close an opening-closing body of a vehicle. The drive circuit supplies driving power to the motor body. The control circuit includes a PWM controller. The control circuit is configured to adjust the driving power by PWM control and control an operation mode of the opening-closing body through the motor body such that the operation mode is changeable. The PWM controller is configured to have a control frequency of the PWM control include a frequency in an audible range based on a predetermined trigger so that the motor body vibrates in the audible range, thereby performing a sound producing operation. The predetermined trigger includes information about an opening-closing state of the opening-closing body or information about activation and deactivation of a child lock.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: January 5, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shigeru Sugiyama, Yutaka Naito, Ritsurou Hiramatsu, Teruyuki Toyoda, Motoya Yamamoto, Nobuo Mizutani
  • Publication number: 20190003238
    Abstract: An opening-closing body driving motor includes a motor body, a drive circuit, and a control circuit. The motor body is provided to automatically open and close an opening-closing body of a vehicle. The drive circuit supplies driving power to the motor body. The control circuit includes a PWM controller. The control circuit is configured to adjust the driving power by PWM control and control an operation mode of the opening-closing body through the motor body such that the operation mode is changeable. The PWM controller is configured to have a control frequency of the PWM control include a frequency in an audible range based on a predetermined trigger so that the motor body vibrates in the audible range, thereby performing a sound producing operation. The predetermined trigger includes information about an opening-closing state of the opening-closing body or information about activation and deactivation of a child lock.
    Type: Application
    Filed: March 16, 2017
    Publication date: January 3, 2019
    Applicant: DENSO CORPORATION
    Inventors: Shigeru SUGIYAMA, Yutaka NAITO, Ritsurou HIRAMATSU, Teruyuki TOYODA, Motoya YAMAMOTO, Nobuo MIZUTANI
  • Patent number: 7626293
    Abstract: A first heat releasing member, which is made from a metal plate material, is fitted into a circuit receiving recess, which receives a control circuit member. A second heat releasing member, which is made from a metal plate material and includes a resilient contact portion, is placed over the first heat releasing member. The resilient contact portion resiliently contacts a drive control IC of the control circuit member.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 1, 2009
    Assignee: ASMO Co., Ltd.
    Inventors: Ritsurou Hiramatsu, Hiroaki Yamamoto, Katsumi Endo
  • Patent number: 7500331
    Abstract: A self-driving closure device has a drive unit and a cable. The drive unit that is fixed to a closure device to open and close the closure device by moving together with the closure device along a guide rail. The cable connects the drive unit with a power supply connector to energize the drive unit. The cable having an approximately planiform cross-section.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: March 10, 2009
    Assignee: ASMO Co., Ltd.
    Inventor: Ritsurou Hiramatsu
  • Publication number: 20070069595
    Abstract: A first heat releasing member, which is made from a metal plate material, is fitted into a circuit receiving recess, which receives a control circuit member. A second heat releasing member, which is made from a metal plate material and includes a resilient contact portion, is placed over the first heat releasing member. The resilient contact portion resiliently contacts a drive control IC of the control circuit member.
    Type: Application
    Filed: August 17, 2006
    Publication date: March 29, 2007
    Applicant: ASMO CO., LTD.
    Inventors: Ritsurou Hiramatsu, Hiroaki Yamamoto, Katsumi Endo
  • Publication number: 20060207183
    Abstract: A self-driving closure device has a drive unit and a cable. The drive unit that is fixed to a closure device to open and close the closure device by moving together with the closure device along a guide rail. The cable connects the drive unit with a power supply connector to energize the drive unit. The cable having an approximately planiform cross-section.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 21, 2006
    Applicant: ASMO CO., LTD.
    Inventor: Ritsurou Hiramatsu