Patent ID: 8752658

Claim:
A motorized walker, comprising; a frame supporting a seat, the frame being supported by front ground contacting wheels and rear ground contacting wheels, and having handles on an upper portion of the frame suitable to be gripped by a human; retractable motor driven wheels suspended from the frame between the front ground contacting wheels and the rear ground contacting wheels, the retractable motor driven wheels being mounted on a retractable sub-frame that is retractable by user adjustment between a wheelchair mode in which the retractable motor driven wheels are extended and a walker mode in which the retractable motor driven wheels are retracted; the retractable sub-frame comprising a first adjustable strut suspended from a frame component on a first side of the frame, a second adjustable strut suspended from a frame component on a second side of the frame, each of the first adjustable strut and the second adjustable strut having a user modifiable length, and respective second struts connected on each side of the frame to the respective frame components to form respective triangular frame structures with the respective first adjustable strut and second adjustable strut; and controls for the motor drive wheels mounted on the frame.