Patent ID: 8146938

Claim:
A pedalling method for causing a drive shaft ( 2 ) to rotate by means of two pedals ( 10 , 30 , 60 , 80 ) operated with a time delay ( 43 ) between them along respective closed curved trajectories ( 12 , 40 , 41 , 42 ) having a top part and a bottom part on either side of a plane where the pedals are at equal height, comprising transmitting the movement of the pedals to the shaft by means of a transmission mechanism which defines for each pedal, upon the angular speed of rotation of the drive shaft about an axis of the drive shaft being constant, a higher average speed in the top part than in the bottom part, such that the plane of equal height of the pedals is below the mid-height of the closed trajectories, wherein the speeds ( 45 , 46 ) of the pedals are approximately equal when they are in the plane of equal height.