Patents by Inventor Koji KUROZUMI

Koji KUROZUMI 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).

  • Collision energy absorbing apparatus
    Patent number: 11560179
    Abstract: The present disclosure provides a collision energy absorbing apparatus capable of suppressing a peak load at the initial stage of a collision and a load drop immediately after it. The collision energy absorbing apparatus is an apparatus that absorbs collision energy, the apparatus being mounted on a vehicle and including a pressure member, an absorbing member, and a guide part that guides, a moving direction of the pressure member, in which a hole through which the pressure member guided and moved by the guide part enters is formed in the absorbing member, and in an event of a collision, the pressure member is guided by the guide part and a tip part of the pressure member enters the hole formed in the absorbing member while shearing an inner wall of the hole, to thereby absorb collision energy.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: January 24, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koichi Hiramatsu, Koji Kurozumi
  • COLLISION ENERGY ABSORBING APPARATUS
    Publication number: 20210394831
    Abstract: The present disclosure provides a collision energy absorbing apparatus capable of suppressing a peak load at the initial stage of a collision and a load drop immediately after it. The collision energy absorbing apparatus is an apparatus that absorbs collision energy, the apparatus being mounted on a vehicle and including a pressure member, an absorbing member, and a guide part that guides, a moving direction of the pressure member, in which a hole through which the pressure member guided and moved by the guide part enters is formed in the absorbing member, and in an event of a collision, the pressure member is guided by the guide part and a tip part of the pressure member enters the hole formed in the absorbing member while shearing an inner wall of the hole, to thereby absorb collision energy.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 23, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koichi HIRAMATSU, Koji KUROZUMI
  • Incremental forming method
    Patent number: 9522420
    Abstract: An incremental forming method includes pressing a rod-shaped tool into a workpiece and stretching the workpiece little by little while moving the rod-shaped tool so that a percentage of decrease in plate thickness of the workpiece after forming with respect to plate thickness of the workpiece before forming is made to be within a range of 35% to 40%, inclusive.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: December 20, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyoshi Nonomura, Koji Kurozumi, Koji Inoue
  • Metal plate forming method
    Patent number: 9511415
    Abstract: A forming method of a metal plate includes press-forming the metal plate with a die, and processing the press-formed metal plate by incremental-forming.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 6, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kiyoshi Nonomura, Koji Kurozumi, Koji Inoue, Hiroyuki Horiuchi
  • INCREMENTAL FORMING METHOD
    Publication number: 20150082854
    Abstract: An incremental forming method includes pressing a rod-shaped tool into a workpiece and stretching the workpiece little by little while moving the rod-shaped tool so that a percentage of decrease in plate thickness of the workpiece after forming with respect to plate thickness of the workpiece before forming is made to be within a range of 35% to 40%, inclusive.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyoshi Nonomura, Koji Kurozumi, Koji Inoue
  • METAL PLATE FORMING METHOD
    Publication number: 20130263639
    Abstract: A forming method of a metal plate includes press-forming the metal plate with a die, and processing the press-formed metal plate by incremental-forming.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 10, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyoshi NONOMURA, Koji KUROZUMI, Koji INOUE, Hiroyuki HORIUCHI