COMPACT BICYCLE WITH ELLIPTICAL DRIVE Russian patent published in 2013 - IPC B62M3/06 

FIELD: transport.

SUBSTANCE: invention relates to vehicles with muscle drives. Proposed bicycle comprises frame, seat, front turning wheel, rear drive wheel, two crank-and-rocker mechanisms on both side of the bicycle with cranks being fitted opposed on the shaft. Rockers of said mechanisms are coupled with the frame while the shaft is driven by drive wheel via ratchet. Rockers are articulated with bell crank arm its axle being arranged above rear wheel and secured to the frame by bracket. Another arm of bell crank is furnished with retainer interacting with one of holes in plate attached to the frame under the seat. Central parts of the rods are secured to cranks. Said shaft is drive by rear wheel via planetary gear.

EFFECT: smaller sizes, possibility to exploit forefoot muscles for bicycle drive.

2 dwg