Patent ID: 6279927
Filing Date: 2001-08-28
Classification: A61G

Abstract:
A wheelchair comprising a pair of drive wheels mounted to a body frame and a front caster wheel and a rear caster wheel mounted to the body frame in a position to the front and rear of the drive wheels so as to allow the wheelchair to turn at a stationary position, comprising:a link member extending between the body frame and the drive wheels, and having one end pivotally connected to an upper part of the body frame and another end rotatably supporting the drive wheels so that the drive wheels are movable back and forth freely with no restriction to the rear caster wheel; andthe link member being assembled in such a manner that the link member turns around a point of connection between the link member and the body frame in a direction to reduce a distance between the front caster wheel and the drive wheels when the front caster wheel abuts a stepped portion of a floor surface, and turns around the point of connection to an original position and to restore the distance between the front caster wheel and the drive wheels once the abutting relationship between the front caster wheel and the stepped portion is resolved.