Patent ID: 9554955
Date: 2017-01-31
CPC Classifications: A47C,A61G

Claim:
1. A wheelchair comprising: a main frame; a plurality of wheels adapted to support the main frame relative to a supporting surface; a seat frame configured to support an occupant; and an arc plate attached to the seat frame, the arc plate having a first curved guide and a second curved guide positioned above a substantial portion of the first curved guide, the first and second curved guides configured to serve as rolling or sliding surfaces that allow the seat frame to tilt relative to the main frame, wherein the first and second curved guides each have a curvature that is non-concentric with respect to each other, such that, the first and second curved guides define a tilt path that limits shifting of the center of gravity of the occupant when the occupant is supported by the seat frame and the seat frame is tilted relative to the main frame along the tilt path.