Patents by Inventor Kazuki Hirota

Kazuki Hirota 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: 20240068519
    Abstract: A hub seal seals a gap between an outer race member and an inner race member of a hub bearing. The hub seal includes: an annular base; and a seal member attached to the base and including an annular elastic material. The seal member includes a side lip extending toward an outer side and an intermediate lip extending toward the outer side on an inner periphery side relative to the side lip. A sliding surface of the side lip that comes into contact to seal the gap between the outer race member and the inner race member is rougher than a sliding surface of the intermediate lip that comes into contact to seal the gap between the outer race member and the inner race member.
    Type: Application
    Filed: August 10, 2023
    Publication date: February 29, 2024
    Inventors: Kenichi TAMURA, Kazuki HIROTA
  • Patent number: 11794819
    Abstract: In an engine compartment, an engine, a generator using the engine as a power source, a motor for driving the vehicle, and a gear box are arranged in alignment in a vehicle width direction. The first high-voltage equipment is vertically provided on a generating unit that includes the engine and the generator. The second high-voltage equipment is vertically provided on a drive unit that includes the motor and the gear box. The first high-voltage equipment and the second high-voltage equipment are coupled by a coupling member that extends substantially horizontally in the vehicle width direction and supports the high-voltage equipment, against a falling load directed from one thereof toward the other.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: October 24, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takashi Hamada, Kazuki Hirota, Satoshi Nakamura, Toshimitsu Yugami, Yoshiaki Noguchi, Koji Jahara
  • Patent number: 11492044
    Abstract: The present disclosure includes: a cowl member that is formed to extend in a vehicle width direction and bulges to the front from a rear side of a motor chamber; a power unit that is fixed to a right side frame in the motor chamber, has a lower portion fixed to a vehicle body, and drives the vehicle by electricity; and a protection bracket provided on an upper surface of the power unit, wherein the protection bracket is configured to abut the cowl member in the case where a frontal collision of a vehicle occurs and the power unit moves downward to the rear.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: November 8, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tsuguo Shimokouchi, Kazuki Hirota, Takashi Hamada, Tadasuke Abe, Shunji Hiramatsu
  • Publication number: 20210053623
    Abstract: The present disclosure includes: a cowl member that is formed to extend in a vehicle width direction and bulges to the front from a rear side of a motor chamber; a power unit that is fixed to a right side frame in the motor chamber, has a lower portion fixed to a vehicle body, and drives the vehicle by electricity; and a protection bracket provided on an upper surface of the power unit, wherein the protection bracket is configured to abut the cowl member in the case where a frontal collision of a vehicle occurs and the power unit moves downward to the rear.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 25, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Tsuguo SHIMOKOUCHI, Kazuki HIROTA, Takashi HAMADA, Tadasuke ABE, Shunji HIRAMATSU
  • Publication number: 20210053624
    Abstract: In an engine compartment, an engine, a generator using the engine as a power source, a motor for driving the vehicle, and a gear box are arranged in alignment in a vehicle width direction. The first high-voltage equipment is vertically provided on a generating unit that includes the engine and the generator. The second high-voltage equipment is vertically provided on a drive unit that includes the motor and the gear box. The first high-voltage equipment and the second high-voltage equipment are coupled by a coupling member that extends substantially horizontally in the vehicle width direction and supports the high-voltage equipment, against a falling load directed from one thereof toward the other.
    Type: Application
    Filed: August 13, 2020
    Publication date: February 25, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Takashi HAMADA, Kazuki HIROTA, Satoshi NAKAMURA, Toshimitsu YUGAMI, Yoshiaki NOGUCHI, Koji JAHARA
  • Patent number: 10358024
    Abstract: An electric-drive vehicle structure is provided, which includes a cross member bridged between side frames in a front part of a vehicle, a motor suspended below the cross member, a tray fixed to an upper surface of the cross member, and an electric unit for driving a motor, fixed onto the tray. A front edge of the electric unit is located forward of a front edge of the cross member, and the tray has a front edge located, throughout a width thereof, forward of the electric unit.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: July 23, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Toshimitsu Yugami, Ikuo Nonaka, Yoshiaki Noguchi, Koji Jahara, Takashi Hamada, Tadasuke Abe, Kazuki Hirota
  • Publication number: 20190084397
    Abstract: An electric-drive vehicle structure is provided, which includes a cross member bridged between side frames in a front part of a vehicle, a motor suspended below the cross member, a tray fixed to an upper surface of the cross member, and an electric unit for driving a motor, fixed onto the tray. A front edge of the electric unit is located forward of a front edge of the cross member, and the tray has a front edge located, throughout a width thereof, forward of the electric unit.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 21, 2019
    Inventors: Toshimitsu Yugami, Ikuo Nonaka, Yoshiaki Noguchi, Koji Jahara, Takashi Hamada, Tadasuke Abe, Kazuki Hirota