Apparatus and methods for determining loft time and speed

  • US 5,960,380 A
  • Filed: 12/12/1996
  • Issued: 09/28/1999
  • Est. Priority Date: 11/21/1994
  • Status: Expired due to Term
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First Claim
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1. Apparatus for determining loft time of a moving vehicle off ofa surface, the vehicle of the type which is ridden along the surface by a user of the vehicle, comprising:

  • a loft sensor for sensing a first condition that is indicative of the vehicle leaving the surface, and a second condition indicative of the vehicle returning to the surface, the loft sensor being constructed and arranged so as to be substantially non-interfering with motion of the vehicle along the surface, wherein the loft sensor senses a spectrum of information and wherein the first and second conditions correspond to a change in the spectrum of information;

    a microprocessor subsystem for determining a loft time that is based on the first and second conditions, wherein the microprocessor subsystem comprises means for interpreting the change in the spectrum to determine the loft time; and

    display means for displaying the loft time to the user.

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