Bicycle having arm assisted drive

摘要

A dual drive bicycle includes an arm powered drive assembly including a drive mechanism mountable on one of the bicycle wheels or on the foot powered crank mechanism. The drive assembly includes a sprocket and a ratchet assembly for pivotal engagement with the sprocket wheel, a drive line coupled to the ratchet assembly for driving the ratchet assembly and the drive sprocket, and a free wheeling mechanism for coupling the ratchet assembly and the drive sprocket wheel. Movement of the handlebar moves the drive line which engages the ratchet assembly for driving the drive mechanism.