Abstract: A multi-wheeled vehicle powered via a twin treadle-acting drive train. An upright front steering assembly including a pair of tie rod coupled front wheels and steering bar-mounted gear shift and hand brake assemblies facilitate operator control of a chain-driven rear wheel. The drive train incudes left and right treadles which, via an interconnected chain and crossover sprockets, drive a rear wheel housing supported stub shaft having a pair of end-mounted, over-running sprocketed clutches, a drive sprocket and a non-reversing clutch. A derailleur-controlled drive chain transfers power from the drive sprocket to the rear wheel.

Abstract: A folding recumbent bicycle wherein a bicycle of recumbent design includes a three-section main frame which folds at two hinged locations; a steering bar which folds at a hinged location and handlegrip members which fold to lie along the steering bar; and a seat and backrest which fold down essentially parallel to the main frame member. Forward and rear seat support members may each include a box-like storage compartment.

Abstract: A non-motorized tricycle including: a frame having a seat for supporting a rider; a front wheel and two rear wheels; a steering member pivotably supported by the frame and supporting the front wheel; and a crank drive mechanism for rotating the rear wheels and propelling the tricycle, the crank drive mechanism including: a pedal crank rotatably supported by the frame and having crank portions and pedals engageable by the feet of the rider; a bracket secured to, and extending downwardly from, the frame; a auxiliary crank member rotatably mounted in the bracket and having two first crank portions and two second crank portions; a rear axle rotatably mounted to the frame and secured to the rear wheels, the rear axle having two crank portions; two main crank rods articulated between the crank portions of the axle and the first crank portions of the auxiliary crank member; and two auxiliary crank rods articulated between the second crank portions of the auxiliary crank member and the pedal crank; the crank drive me

Abstract: A tricycle which is capable of being converted either to a traditional high position in which a rider is seated relatively high on the frame, or to a low slung position in which the frame is inverted so that a rider is seated relatively low on the frame. To invert the frame, the a front fork and handlebar are removable from the head tube of the tricycle and invertible relative to the frame and the seat is adjustable between a high and low position corresponding to the high and low slung tricycle positions. A rear deck is attached to a rear portion of the main tube and is tubular in shape so that it fully and protects encloses the rear axle of the tricycle in both the high and the low frame positions. A seat is mounted on the frame and is capable of forward and rearward adjustment as well as upward and downward adjustment.