Patents by Inventor Hiroshi Tsunashima

Hiroshi Tsunashima 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).

  • Lumbar support operation member and vehicle seat
    Patent number: 9308847
    Abstract: A lumbar support operation member comprising a shaft attachment portion that is configured so as to be fixed to a rotation shaft that transmits rotation force to a moving mechanism of a lumbar support provided to a seatback and that is positioned at a side portion of the seatback; and operation portions that are provided at an radial direction outside of the shaft attachment portion, that are separated from each other in a circumferential direction of the shaft attachment portion, and that make the shaft attachment portion rotate.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: April 12, 2016
    Assignee: NHK SPRING CO., LTD.
    Inventors: Shinji Arakawa, Akihiro Hayashi, Hiroshi Tsunashima, Kozo Yamaura
  • Vehicle seat
    Patent number: 8973985
    Abstract: There is provided a vehicle seat including: a seatback formed with a penetrating portion that penetrates from a front face side to a back face side; a placement member that is attached to the seatback so as to be capable of moving between a housed position housed inside the penetrating portion and closing off the penetrating portion and a lowered position lowered from the housed position towards the front side; and a flexible opening and closing member that is attached to the seatback and is capable of opening the penetrating portion and closing off the penetrating portion from the seatback back face side.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: March 10, 2015
    Assignee: NHK Spring Co., Ltd.
    Inventors: Shinji Arakawa, Hiroshi Tsunashima, Satoshi Matsuhashi
  • VEHICLE SEAT
    Publication number: 20140132040
    Abstract: There is provided a vehicle seat including: a seatback formed with a penetrating portion that penetrates from a front face side to a back face side; a placement member that is attached to the seatback so as to be capable of moving between a housed position housed inside the penetrating portion and closing off the penetrating portion and a lowered position lowered from the housed position towards the front side; and a flexible opening and closing member that is attached to the seatback and is capable of opening the penetrating portion and closing off the penetrating portion from the seatback back face side.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 15, 2014
    Applicant: NHK Spring Co., Ltd.
    Inventors: Shinji Arakawa, Hiroshi Tsunashima, Satoshi Matsuhashi
  • LUMBAR SUPPORT OPERATION MEMBER AND VEHICLE SEAT
    Publication number: 20130341981
    Abstract: A lumbar support operation member comprising a shaft attachment portion that is configured so as to be fixed to a rotation shaft that transmits rotation force to a moving mechanism of a lumbar support provided to a seatback and that is positioned at a side portion of the seatback; and operation portions that are provided at an radial direction outside of the shaft attachment portion, that are separated from each other in a circumferential direction of the shaft attachment portion, and that make the shaft attachment portion rotate.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 26, 2013
    Inventors: Shinji Arakawa, Akihiro Hayashi, Hiroshi Tsunashima, Kozo Yamaura