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Obstacle traversing wheelchair

DC
  • US 7,219,755 B2
  • Filed: 06/03/2005
  • Issued: 05/22/2007
  • Est. Priority Date: 10/27/2000
  • Status: Expired due to Term
First Claim
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1. A wheelchair for traversing obstacles, comprising:

  • (a) a frame;

    (b) a pivoting assembly having at least one pivot arm, said at least one pivot arm comprising(i) a first portion pivotally coupled to said frame; and

    (ii) a second portion having at least one front caster attached thereto for normally contacting a supporting surface of the wheelchair;

    (c) a drive assembly coupled to a third portion of said at least one pivot arm;

    (d) a rear caster coupled to said frame;

    wherein said at least one pivot arm pivots in response to a moment generated by the drive assembly thereby urging said at least one front caster from said supporting surface to assist said wheelchair in traversing said obstacles; and

    wherein said at least one pivot arm pivots in response to a moment generated by the drive assembly to raise said at least one front caster between one and six inches from said supporting surface.

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