Patent ID: 7803090

Claim:
A mobile device adapted to utilize ambulatory motion of the user's body for propulsion comprising: a frame comprising a longitudinal frame member oriented substantially horizontally, having a front end and a rear end; a transverse frame member oriented substantially horizontally, having two ends, joined between said ends of the transverse frame member to said longitudinal member, in a substantially normal orientation thereto; and an upright frame member having a top end and a bottom end, the bottom end joined to said longitudinal member at a position rearward of said transverse member; two front wheels, one of said front wheels rotationally coupled to each end of said transverse frame member; a rear wheel comprising a drive assembly rotationally coupled to said longitudinal frame member proximate the rear end thereof, said drive assembly comprising a rotating axle, a hub, and a gear system internal to said hub transferring rotation of said axle to rotation of said hub in a predetermined ratio of axle rotation to hub rotation; a pair of opposing cranks, each crank having an inner end and an outer end, the inner end of each crank fixedly attached to one end of said axle; a pair of elongate striding members, adapted to receive the feet of said user and support said user while ambulating, said members positioned substantially horizontally along either side of said longitudinal frame member, having a front pivot end and a rearward drive end, the rearward drive end of each striding member rotationally coupled to the outer end of one of said cranks; and a pair of upright arm levers having an upper grip end and a lower pivot end, said arm levers pivotally coupled to said upright frame member at a point between said ends of the upright arm levers, the lower pivot end of each said lever pivotally coupled to the front pivot end of one of said striding members; wherein the connection of said transverse frame member and said longitudinal frame member permits partial axial rotation of said longitudinal member, and the device further comprising a camber mechanism coupled to each of the front wheels and affixed to said longitudinal member, said camber mechanism adapted to translate arcuate movement from partial axial rotation of said longitudinal member into wheel camber, thereby causing said device to turn.