×

Wheelchair

  • US 5,022,476 A
  • Filed: 10/20/1989
  • Issued: 06/11/1991
  • Est. Priority Date: 07/22/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. In a wheelchair having at least one electrically driven drive wheel, one pair of power-steered steering wheels each of which swivels independently of each other around an essentially perpendicular steering axis, and a manually-operated control and steering element, the improvement comprising:

  • a separate steering motor for each steering wheel to adjust the steering angle of the steering wheels about its steering axis,said steering element comprising a mechanical-electrical steering angle generator which produces an electrical steering signal dependent on the angular position of said steering element,an electrical control device which receives said electrical steering signal, thereby controlling both said steering motors for the adjustment of the steering angle of the steering wheels by producing an adjustment signal for each steering wheel which is inversely proportional to the curve of the turning radius of each said steering wheel.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×