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Rear wheel suspension for a motorcycle

  • US 4,322,088 A
  • Filed: 02/07/1980
  • Issued: 03/30/1982
  • Est. Priority Date: 02/13/1979
  • Status: Expired due to Term
First Claim
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1. A rear wheel suspension for a motorcycle comprising a body frame, a rear wheel support frame pivotally mounted on said body frame for upward and downward movement relative thereto and rotatably supporting a rear wheel, rear shock absorber means disposed between said body frame and said rear wheel support frame for damping the relative movement between said body frame and said rear wheel, means for adjusting the damping force of said shock absorber means in a manner such that the rate of increase in the compression stroke of the shock absorber means is increased in proportion to the upward movement of said rear wheel relative to said body frame, said means for adjusting the damping force of said shock absorber means comprises lever plate means pivotally mounted on a rear upper portion of said body frame, an extension formed integral with said rear wheel support frame and projecting forwardly therefrom beyond the pivot connection thereof with the body frame, pull rod means pivoted at its one end to said lever plate means and at its other end to said extension, said rear shock absorber means being pivotally connected at its one end to said lever plate means and at its other end to said rear wheel support frame at its intermediate portion.

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