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Tennis racket

  • US 5,226,650 A
  • Filed: 09/05/1990
  • Issued: 07/13/1993
  • Est. Priority Date: 09/05/1989
  • Status: Expired due to Fees
First Claim
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1. Tennis racket with a handle upon which a grip covering is applied, comprising a sensor incorporated into the handle and forming a means for measuring a gripping force with which the handle is grasped by hand of a tennis player wielding the tennis racket, said sensor being electronically connected to an acoustic signal emitter in the handle in a manner forming a means for emitting an acoustic indicator signal when at least one determined preadjustable limiting value of the gripping force is reached;

  • wherein the handle is made up of two half shells between which at least one spring element is placed as a means for applying a force in a direction acting to press the half shells apart.

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