Patent ID: 7516977

Claim:
A seat adjusting mechanism of a motorized wheelchair comprising: a cart frame with wheels connected thereon, and having a rear end, a front end and a longitudinal axis extending from the rear end to the front end of the cart frame; a seat; three linking rod mechanisms, each including two connecting frames and each connecting frame including two parallel connecting rods which are connected to another connecting rods to form a rigid rectangular frame, the two connecting frames of each linking rod mechanism pivot-linked with each other and having two distal ends, the distal ends of each linking rod mechanism respectively connected between the cart frame and the seat, two linking rod mechanisms positioned symmetrically about a vertical midplane containing the longitudinal axis extending from the rear end to the front end of the cart frame; and a linear motion actuator connecting the cart frame and the seat so as to actuate the seat frame to move relatively to the cart frame.