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High/low extension-lift power wheelchair

  • US 4,613,151 A
  • Filed: 02/16/1984
  • Issued: 09/23/1986
  • Est. Priority Date: 02/16/1984
  • Status: Expired due to Fees
First Claim
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1. A wheelchair adapted to selectively position the rider in positions of varying height from the ground comprising:

  • a main frame;

    two drive wheels operably secured to said frame;

    a seat operably secured to said main frame and adapted to be selectively raised or lowered;

    an extension structure operably secured to said frame and adapted to selectively move relative to said main frame;

    coupling means operably secured to said seat, to said main frame, and to said extension structure said coupling means adapted to extend said extension structure relative to said main frame when said seat is lowered and to draw said extension structure towards said main frame when said seat is raised;

    a wheel operably secured to said extension structure, said wheel adapted to have selectively limited castering and adapted to support said wheelchair as a third point cooperating with said two drive wheels.

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