Powered wheelchair configurations and related methods of use

CAFC
  • US 8,408,343 B2
  • Filed: 10/22/2012
  • Issued: 04/02/2013
  • Est. Priority Date: 07/14/2005
  • Status: Active Grant
First Claim
Patent Images

1. A wheelchair comprising:

  • a frame;

    a drive wheel defining a drive wheel axis a mounting plate pivotally coupled to the frame at a pivot axis, the pivot axis being positioned forward of the drive wheel axis;

    a mounting plate pivotally coupled to the frame at a pivot axis, the pivot axis being positioned forward of the drive wheel axis;

    a drive operatively coupled to the drive wheel and affixed to the mounting plate;

    a forward-extending front arm rigidly extending from the mounting plate such that the mounting plate, drive, and front arm are together configured to pivot about the pivot axis;

    a front wheel rotatably coupled to the front arm, the front wheel defining a front wheel axis, wherein a vertical position of the pivot axis with respect to the ground plane is spaced from and positioned relatively below a line drawn between the drive wheel axis and the front wheel axis when the drive wheels and front wheels are on level ground,whereby motor torque biases the front wheel.

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