Patent ID: 8336904

Claim:
A modular wheelchair comprising: a drive module having drive wheels and a pair of motors; a wheels module having support wheels; a seat module having seat means for supporting a person; a chassis module defined by a plurality of frame members which include an inclined frame member and are substantially centered to a vertical center plane through said chassis module; and coupling means for releasable interconnection of said drive, seat, chassis, and wheels modules, said coupling means including a single plug/receiver mechanical coupling of said chassis module to said drive module at a first end of said inclined frame member in which a receiver is configured such that insertion of a plug to a seated position resists lateral movement of said plug within said receiver and resists relative rotation between said plug and said receiver, and said coupling means including a second mechanical coupling releasable connecting said seat module to said chassis module at a second, opposed end of said inclined frame member.