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Wheelchair suspension

  • US 8,573,341 B2
  • Filed: 05/09/2008
  • Issued: 11/05/2013
  • Est. Priority Date: 10/19/2001
  • Status: Expired due to Fees
First Claim
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1. A wheelchair comprising:

  • a frame;

    a front caster assembly comprising a pivot arm that is pivotally coupled to the frame;

    a drive assembly that is pivotally coupled to the frame;

    an interface between the caster assembly and the drive assembly that engages and disengages based on relative movement between the drive assembly and the front caster assembly comprising;

    at least one inwardly curved surface; and

    at least one outwardly curved surface disposed substantially opposite the at least one inwardly curved surface.

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