Patent ID: 7360792

Claim:
A power wheelchair comprising: a frame; first and second drive wheels supported on the frame for rotation about a common first axis of rotation and for contact with a supporting ground surface; and a wheel support assembly including at least one support member pivotally connected to the frame and having a first end and a second end, a support assembly drive wheel connected to the support member proximate the first end for rotation about a second axis of rotation, a non-driven wheel connected to the support member proximate the second end, and an actuator supported by the frame and operably connected to the support member to selectively move the support member between a first position and a second position, wherein in the first position the support assembly drive wheel is moved out of contact with the supporting surface and in the second position the non-driven wheel is moved out of contact with the supporting surface and the support assembly drive wheel is moved into contact with the supporting surface.