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Method and apparatus for determining the displacement of a piston within a shock absorber

  • US 5,125,681 A
  • Filed: 11/26/1990
  • Issued: 06/30/1992
  • Est. Priority Date: 11/26/1990
  • Status: Expired due to Term
First Claim
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1. A shock absorber comprising:

  • a pressure cylinder forming a working chamber having first and second portions operable to store damping fluid;

    valve means for controlling the flow of damping fluid between said first and said second portions of said working chamber;

    a Teflon sleeve disposed between said valve means and said pressure cylinder; and

    means for determining the position of said valve means with respect to said pressure cylinder by determining the capacitance between said pressure cylinder and said valve means.

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