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Trailer suspension apparatus

  • US 5,275,430 A
  • Filed: 02/05/1992
  • Issued: 01/04/1994
  • Est. Priority Date: 02/05/1992
  • Status: Expired due to Term
First Claim
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1. A wheel suspension system for mounting a wheel to the frame of a vehicle adjacent a floor of the vehicle, which comprises:

  • a wheel support member;

    a wheel mounted to said wheel support member for rotation about a horizontal rotation axis;

    attachment means for attaching said wheel support member to a vehicle frame to be pivotable about a horizontal pivot axis displaced from said rotation axis of said wheel to move said wheel vertically between a first, uppermost position and a second lowermost position;

    means for providing lateral support to said wheel connected between the vehicle frame and said wheel support member at a location displaced from said rotation axis and the pivot axis; and

    biasing means for biasing said wheel support member to an intermediate position between the uppermost and lowermost positions and permitting resisted movement away from the intermediate position, said biasing means including a resilient member positioned between opposed surfaces of said wheel support member and the vehicle frame,wherein the resilient component and the pivot axis are both positioned to the same side of the rotation axis of the wheel relative to the forward direction of travel of the vehicle.

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