Patents by Inventor Sadaaki Mitsuo

Sadaaki Mitsuo 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).

  • Automotive seatbelt take-up device
    Patent number: 6431485
    Abstract: An automotive seatbelt take-up device has a primary spiral spring biasing a take-up shaft in a seatbelt take-up direction. A spring clutch transfers rotation of the take-up shaft in a seatbelt drawing-out direction to a ring. A secondary spiral spring is capable of generating rotational biasing force on the take-up shaft in a direction opposite that of the primary spiral spring. Thus, the present invention provides an automotive seatbelt take-up device that can reduce both the drawing-out force and the take-up force of a seatbelt when the seatbelt is being worn.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: August 13, 2002
    Assignees: Suncall Kabushiki Kaisha, Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Sadaaki Mitsuo, Masahito Wakahara, Norikazu Akamatsu, Kazuhiro Osaki
  • Automotive seatbelt take-up device
    Publication number: 20010022330
    Abstract: An automotive seatbelt take-up device has a primary spiral spring biasing a take-up shaft in a seatbelt take-up direction. A spring clutch transfers rotation of the take-up shaft in a seatbelt drawing-out direction to a ring. A secondary spiral spring is capable of generating rotational biasing force on the take-up shaft in a direction opposite that of the primary spiral spring. Thus, the present invention provides an automotive seatbelt take-up device that can reduce both the drawing-out force and the take-up force of a seatbelt when the seatbelt is being worn.
    Type: Application
    Filed: January 29, 2001
    Publication date: September 20, 2001
    Inventors: Sadaaki Mitsuo, Masahito Wakahara, Norikazu Akamatsu, Kazuhiro Osaki