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Compact golf swing training and practice device

  • US 4,630,829 A
  • Filed: 03/29/1985
  • Issued: 12/23/1986
  • Est. Priority Date: 03/29/1985
  • Status: Expired due to Fees
First Claim
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1. A golf swing practice device for measuring the speed at which a golfer swings his club through a measuring zone, said practice device including at least two optical detectors, the respective optical axes of which define opposite ends of the measuring zone, means by which to supply said optical detectors with incident light, computational means interfaced with said optical detectors to measure the elapsed time for the golfer to swing his club through the measuring zone so as to obtain an indication of the speed at which the golfer swings his club therethrough, and detector circuitry interfaced with said optical detectors and comprising:

  • signal generating means interconnected with each of said optical detectors to generate output signals, the magnitudes of which are representative of the optical intensity of the incident light received by said optical detectors from said incident light supply means;

    reference signal supply means providing first and second reference signals, the magnitudes of which are representative of minimum and maximum optical intensities in a predetermined range of optical intensities to which said optical detectors are responsive; and

    limit detector means connected to receive and compare the magnitudes of the first and second reference signals from said reference signal supply means with the magnitudes of the output signals provided by said signal generating means, said limit detector means providing an output signal indicative of whether the intensity of the incident light at said optical detectors is above, below or within the range of predetermined optical intensities established by said reference signal supply means.

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