Patents Assigned to Sphip Co., Ltd.
  • Patent number: 5154431
    Abstract: A ball, a racket and courts used in a new game or sport. The central idea behind this game is that a ball with a rotary shaft is whipped with a racket into a spinning motion. The ball comprises a spherical body having at least one shaft as a rotary shaft. The diameter of the spherical body is about 100-300 mm. The racket has a palm portion and a grip portion. The palm portion is made of a flexible material. The thickness of the palm portion is about 30-70 mm. A pair of ankle guards used to protect the ankles of players during play and specially designed courts for this game are also disclosed.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: October 13, 1992
    Assignee: Sphip Co., Ltd.
    Inventors: Naoharu Hayashi, Naomi Minami, Harumi Minami