Invention Grant
US08574102B1 Swing-pitch system 失效
摆动系统

  • Patent Title: Swing-pitch system
  • Patent Title (中): 摆动系统
  • Application No.: US13763990
    Application Date: 2013-02-11
  • Publication No.: US08574102B1
    Publication Date: 2013-11-05
  • Inventor: Jon A. Russell
  • Applicant: Jon A. Russell
  • Main IPC: A63B69/00
  • IPC: A63B69/00
Swing-pitch system
Abstract:
A wand is formed in a hollow cylindrical configuration. The wand has inner and outer ends. A ball has a cylindrical passageway extending diametrically through the ball. An essentially inextensible cord couples the wand and the ball. In this manner a pitcher is adapted to grasp and spin the wand to pitch the ball in a circular manner. Also in this manner a batter is adapted to swing a bat in an attempt to strike the pitched ball for batting practice.
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