Invention Grant
US07938747B2 Game racket including a pivot element 有权
游戏球拍包括一个枢纽元素

  • Patent Title: Game racket including a pivot element
  • Patent Title (中): 游戏球拍包括一个枢纽元素
  • Application No.: US12072030
    Application Date: 2008-02-21
  • Publication No.: US07938747B2
    Publication Date: 2011-05-10
  • Inventor: Brett Bothwell
  • Applicant: Brett Bothwell
  • Main IPC: A63B49/02
  • IPC: A63B49/02
Game racket including a pivot element
Abstract:
The present invention is intended for use as a game racket including a handle and a head frame with strings held in tension. In particular as a high performance game racket frame including at least one generally tubular, substantially circular pivot element located at least partially within a substantially circular mating recess on at least one portion of an outside-facing peripheral surface of the head frame profile that can rotate to cooperate with at least one string. The pivot element can rest upon at least a portion of the mating recess and therefore can have at least one adjoining surface portion. In order to reduce friction, adjoining surface(s) can be coated with a suitable anti-friction agent such as silicone or it can include a “frictionless” repelling permanent magnet portion capable of sustaining magnetic levitation between the two parts. Alternatively, at least a portion of the adjoining surfaces can include communicating electromagnetic friction plates in order to control the rate at which the pivot element rotates.
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