Patents by Inventor Shun Totsuka

Shun Totsuka 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: 11370294
    Abstract: A grille shutter includes a frame, a fin supported by the frame, and brackets that are arranged respectively on opposite sides of the frame in the vehicle right-left direction and used for attaching the frame to a vehicle body. Each of the brackets is partially provided with a fragile portion.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: June 28, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tamotsu Tsuchida, Shun Totsuka, Ken Komatsubara, Kazuki Tsuboi
  • Patent number: 11225136
    Abstract: A grille shutter includes a frame, a movable louver and a bracket provided at each of end portions of the frame. The frame includes an upper frame portion, a lower frame portion, a right frame portion and a left frame portion, wherein at least one of the upper frame portion and the lower frame portion includes a curved configuration in which a vehicle-rear-side edge of a portion of the one of the upper frame portion and the lower frame portion is convex towards a vehicle-front side, and the portion is positioned between the right frame portion and the left frame portion.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: January 18, 2022
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shun Totsuka, Ken Komatsubara, Kazuki Tsuboi
  • Patent number: 11198406
    Abstract: A fragile portion is provided at a portion of a vertical frame bar. When an impact load from under a vehicle is applied to a grille shutter, the impact can be at least partially absorbed as the fragile portion undergoes plastic deformation (including damage). Thus, the impact exerted on a portion of the vertical frame bar other than the fragile portion is mitigated, and a fin can be restrained from coming off a frame. Moreover, the fin can be restrained from coming off the frame by a compact structure, because simply providing the fragile portion at a portion of the vertical frame bar can achieve that.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: December 14, 2021
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Shun Totsuka, Kazuki Tsuboi, Ken Komatsubara
  • Publication number: 20200406741
    Abstract: A grille shutter includes a frame, a movable louver and a bracket provided at each of end portions of the frame. The frame includes an upper frame portion, a lower frame portion, a right frame portion and a left frame portion, wherein at least one of the upper frame portion and the lower frame portion includes a curved configuration in which a vehicle-rear-side edge of a portion of the one of the upper frame portion and the lower frame portion is convex towards a vehicle-front side, and the portion is positioned between the right frame portion and the left frame portion.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 31, 2020
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shun Totsuka, Ken Komatsubara, Kazuki Tsuboi
  • Publication number: 20200156462
    Abstract: A grille shutter includes a frame, a fin supported by the frame, and brackets that are arranged respectively on opposite sides of the frame in the vehicle right-left direction and used for attaching the frame to a vehicle body. Each of the brackets is partially provided with a fragile portion.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 21, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Tamotsu Tsuchida, Shun Totsuka, Ken Komatsubara, Kazuki Tsuboi
  • Publication number: 20200148147
    Abstract: A fragile portion is provided at a portion of a vertical frame bar. When an impact load from under a vehicle is applied to a grille shutter, the impact can be at least partially absorbed as the fragile portion undergoes plastic deformation (including damage). Thus, the impact exerted on a portion of the vertical frame bar other than the fragile portion is mitigated, and a fin can be restrained from coming off a frame. Moreover, the fin can be restrained from coming off the frame by a compact structure, because simply providing the fragile portion at a portion of the vertical frame bar can achieve that.
    Type: Application
    Filed: October 14, 2019
    Publication date: May 14, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Shun Totsuka, Kazuki Tsuboi, Ken Komatsubara