Patents by Inventor Noboru Owatari

Noboru Owatari 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).

  • Winding spring for seat belt winding apparatus
    Patent number: 4253620
    Abstract: There is provided a winding spring for a seat belt winding apparatus which comprises an output drum and a take-up drum. The winding spring is stretched in the S-shaped form between the output drum and take-up drum. In the normal use region of the entire length of the winding spring, the natural radius of curvature of the spring is gradually increased. In the surplus use region of the spring, the natural radius of curvature of the spring is divided into a part where it is gradually decreased and a part where it is kept constant. The natural radius of curvature in the free end portion of the winding spring is increased.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: March 3, 1981
    Assignees: Nippon Kinzoku Co., Ltd., NSK Warner Kabushiki Kaisha
    Inventors: Mitsuo Takei, Toshiyuki Yashiro, Noboru Owatari, Kazuo Takagi