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INDICATORS FOR INDICATING ACCELERATIONS IN SPORTS EQUIPMENT WHICH ARE SWUNG IN USE

  • US 3,848,873 A
  • Filed: 03/26/1974
  • Issued: 11/19/1974
  • Est. Priority Date: 03/26/1974
  • Status: Expired due to Term
First Claim
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1. In combination with the shaft of an article of sports equipment which is swung in use, a lightweight indicator for indicating predetermined acceleration of the shaft, said indicator comprising a body part, a movable member part movable in the body part in response to accelerations of the shaft in directions transverse to the axis of the shaft during the swinging of the shaft, a stop member for arresting the movable member part, means on the body part for secure and demountable attachment of the indicator on said shaft and means for controlling the movement of said movable member part so that it moves, at a threshold level of the transverse acceleration, from a first rest position, through a neutral equilibrium position to a second rest position at said stop member and thereby produces mechanically an audible signal on impact with said stop member.

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