Sports scoring device including a piezoelectric transducer

  • US 4,824,107 A
  • Filed: 09/08/1986
  • Issued: 04/25/1989
  • Est. Priority Date: 10/10/1985
  • Status: Expired due to Fees
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First Claim
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1. An apparatus for indicating velocity with which an object stikes a target pad, said apparatus comprising:

  • a fixed backing plate having a front side;

    a layer of deformable material affixed to said front side of said backing plate;

    at least a portion of piezoelectric transducer means affixed to said deformable material for generating an analog output signal in response to the object striking the target pad;

    calculating means, responsive to said along output of said piezoelectric transducer means, for calculating the velocity of said object based upon said analog output and the mass of said object; and

    indicator means connected to said calculating means for indicating the calculated velocity of said object.

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