Patents by Inventor Hiyuki Ashihara

Hiyuki Ashihara 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: 4978123
    Abstract: A novel racket for sporting isoffered, with featuring that a crosshandle is added on a shaft of a conventional racket, with a size suitable for hand gripping and is structurally comprised of a plurality of grip members, wherein at least one of the grip members is rotatably mounted, free from a motion of the crosshandle which is integrally connected with a racket so that a user can manually swing the racket with gripping the crosshandle as a pivotal axis. Conventional rackets are used in many sporting events to hit a ball, but this are depends largely on muscular strength, and thereby the muscular weak, elderly people and females, are prone to become unfamiliar to such a nature of sporting. The invention crosshandle racket can utilize a pivotal action to produce centrifugal force in hitting an on-coming ball so that muscular strength may be saved. A new sporting event may be created with use of the inventive racket.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: December 18, 1990
    Inventor: Hiyuki Ashihara