Patents by Inventor Masamitsu Miyajima

Masamitsu Miyajima 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).

  • Fishline guide arrangement for spinning reel
    Patent number: 5984219
    Abstract: In a spinning reel for fishing, a fishline guide roller is rotatably supported on a bail support arm pivotably mounted on a rotor. The guide roller has a flattened shape such that a ratio of an axial length of the roller relative to a diameter thereof falls within 0.10-0.40. Further, the guide roller is formed with a narrow fishline guide groove so that a ratio of an axial length of the fishline guide groove relative to an axial length of the roller falls within 0.05-0.35. It is possible to make a fishline guide roller small in weight and size and to restrict axial motion of a fishline along the guide roller which, among other advantages, reduces line twist in the fishline.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: November 16, 1999
    Assignee: Daiwa Seiko, Inc.
    Inventors: Masamitsu Miyajima, Yukio Ito, Kyoichi Kaneko, Takashi Shibata, Wataru Tsutsumi, Eiji Shinohara, Shinji Takeuchi