Patent ID: 7735591

Claim:
A wheelchair comprising: a frame including a seat post; a pair of opposing drive wheels; a pair of pivoting assemblies, each one of the pivoting assemblies including a drive assembly and a front arm assembly, each one of the pivoting assemblies being associated with one of the drive wheels and pivotally connected to the frame; each drive assembly including a motor and gearbox that are transversely mounted relative to the frame and operatively coupled to one of the drive wheels; a battery compartment formed on the frame and located rearward of the drive assemblies; batteries located in the battery compartment; and an articulating beam assembly including a transverse member, pair of legs, and a pair of rear wheel assemblies, the legs extending generally rearwardly from opposing ends of the transverse member to the rear wheel assemblies, the transverse member being pivotally coupled to the seat post forward of the batteries; whereby the battery compartment may be accessed from the rear of the wheelchair between the legs.