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Ski speedometer

  • US 4,722,222 A
  • Filed: 09/25/1986
  • Issued: 02/02/1988
  • Est. Priority Date: 09/25/1986
  • Status: Expired due to Fees
First Claim
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1. A speedometer for a ski supported over and moving along a stationary medium comprising transducer means mounted for movement with the ski for transmitting waves toward the stationary medium and for detecting such waves reflected from the stationary medium, means for measuring the difference in frequency between the transmitted and reflected waves in accordance with the Doppler effect, and means for calculating and indicating the speed of the ski from such frequency difference.

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  • 3 Assignments
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