Abstract: A pedalling method and device for a user in standing position. The device includes a drive shaft whereof the rotation about its axis is coupled with the rotation of two right and left pedals. The pedals are mutually assembled via a plurality of cranks, connecting rods, and pivots such that: the pedals can travel freely along a circular path, for a constant rotational speed of the shaft, the speeds of the pedals are recurrent at equal time intervals but out of phase, minimal at lower dead center, maximal at upper dead center, and when the pedals are simultaneously at a common height lower than that of the center of the trajectory, the speeds of the pedals are equal. The vertical oscillation of the center of gravity of a user in standing position is reduced compared to a conventional pedal assembly.

Abstract: A pedalling device, includes a drive shaft (2) passing through a frame, a right pedal (30), a left pedal (80), and a transmission mechanism, the transmission mechanism including for each pedal: a driving crank (3, 53), integral with the drive shaft (2); a coupling crank (27, 77); a transmission pivot (56) connecting the driving crank and the coupling crank; elements (4, 54, 55) for varying the distance between the axis of the transmission pivot and the axis of the drive shaft during the rotation of the shaft; a first and a second guide crank, each articulated to the frame; and two pedal pivots each connecting the pedal to one of the two guide cranks. The pedalling device is characterized in that, for each pedal, the coupling crank is integral with the first guide crank. Thus, the device obtained is very compact. Each coupling crank can also have a stabilizing role.

Abstract: A pedalling method and device for a user in standing position. The device includes a drive shaft whereof the rotation about its axis is coupled with the rotation of two right and left pedals. The pedals are mutually assembled via a plurality of cranks, connecting rods, and pivots such that: the pedals can travel freely along a circular path, for a constant rotational speed of the shaft, the speeds of the pedals are recurrent at equal time intervals but out of phase, minimal at lower dead center, maximal at upper dead center, and when the pedals are simultaneously at a common height lower than that of the center of the trajectory, the speeds of the pedals are equal. The vertical oscillation of the center of gravity of a user in standing position is reduced compared to a conventional pedal assembly.