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Captive ball golf practice tee with three-dimension velocity and two-axis spin measurement

  • US 6,551,194 B2
  • Filed: 03/06/2001
  • Issued: 04/22/2003
  • Est. Priority Date: 06/29/1999
  • Status: Expired due to Fees
First Claim
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1. A captive ball golf practice system comprising:

  • a strain plate positioned within a simulated ball, said plate adhered to said ball;

    a ball retaining collar surrounding said plate and portions of said ball adjacent to said plate, said collar having cross members supporting said plate;

    a pivotal column extending from said collar;

    a plurality of strain gauges affixed to said plate and said column; and

    , means for determining a three-dimension velocity vector plus spin rates about two axes of said ball from signals appearing at said strain gauges as a result of a strike to said ball;

    whereby a three-dimension trajectory of a free ball similarly struck can be determined based on said velocity vector and said spin rates.

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