Patent ID: 8113528

Claim:
A wheelchair comprising: a frame; a pair of separately driven rear wheels; a front wheel assembly having a front wheel; and a pair of lever drive assemblies, each having a drive lever, derailer assembly, and a chain for engaging a rear wheel, each drive lever assembly for independently driving one of the pair of rear wheels, wherein each drive lever includes a twist grip steering assembly having a twist grip member for engaging the front wheel assembly such that rotating the twist grip member of one drive lever will move the front wheel in a first direction and rotating the other twist grip member of the other drive lever will move the front wheel in a second direction; wherein the front wheel assembly includes a steering head and a front fork assembly for engaging the front wheel, the front fork assembly pivotally engaged to the steering head, wherein each driver lever assembly has a cable with a cable housing, the cable first end engaging the twist grip member and the cable second end engaging the front fork assembly.