A man-propelled vehicle includes a frame with a seat, two pedals, and two hand-operated handles, each linked with the frame by actuating devices capable of communicating to them an alternating translational motion. The actuating devices are coupled with unidirectional rotary transmission devices on a drive shaft by links adapted to drive in rotation the rotary transmission device when the pedals and operating handles are actuated.

A cycle having front wheel forks with a front wheel, a steering device connected to the front wheel forks, and rear stays with a rear wheel that has a free-wheeling hub. The cycle of this invention also includes a frame which connects the forks and the stays, a scat that can be fastened to the frame, a rear wheel drive, and foot actuating means for the rear wheel drive. The frame is formed by an individual essentially horizontal rail. The foot actuating devices are displaceably guided in the longitudinal direction of the rail. The foot actuating devices are formed by a foot rest for both feet. The seat can be displaced on the rail in a longitudinal direction of the rail, and the steering device is formed by handlebars between which the rail extends. The handlebars are provided with hand grips.

A pedaled propulsion system has left and right foot pedals that travel up and down on roller slides on track members mounted on the bicycle frame. An endless drive web passes between the pedals and loops around a driven wheel at one end of the track assembly, and around an idler at the other end of the track assembly. The driven wheel is mounted on the input shaft of a unidirectional transfer arrangement. The transfer arrangement has an aluminum block case or housing, and an input shaft which has a bevel pinion gear on it that meshes with left and right driven bevel gears. These bevel gears each are mounted to an output shaft by means of unidirectional clutch bearings inside the bevel gears. Each bevel gear drives in one direction and idles in the other direction. As the input shaft oscillates back and forth, the output shaft continues to rotate in the same direction. A sprocket wheel can be mounted on the output shaft to power a chain drive or a shaft drive. Springs at the bottom of the pedal stroke cushion the stroke and return some of the energy during the return stroke.

A recumbent bicycle having a single stroke linear type of pedaling wherein both legs protract and retract simultaneously so that a single push is made instead of alternating pushes. Various other adjustements are posssible to accomodate the length of a user legs and the degree of extension desired.

A reciprocal upward and downward pedaling bicycle structure includes a main shaft of a free wheel at a chain wheel shaft, a driving body pivotally coupled to a frame of the main shaft, a pedal crank and a support rod on the driving body, and a driving belt linked to the main shaft and the support rod. An end of the driving belt is dragged to the frame by a resilient element. By the action of the resilient element ands the rotation of the main shaft, the crank and pedal are pulled by the driving belt to provide an upward bounce and the chain wheel drives the rear wheel shaft through the main driving belt. When the pedal is stepped downward, the main shaft and the chain wheel are rotated synchronously to drive the rear wheel of the bicycle to move forward.