pedalier has two directions of pedaling has two chains, two axes, a pawl has a double action, no gear, which makes it possible to use of no. 09 / 214,122 filed dec and move the bicycle in the back.

摘要

The device has two plates (1) that are assembled on an axis of pedals. A driving wheel is welded with the axis of the pedals. A closed drive chain (8) is provided with a closed reference chain (10). Two pinions (14) are fixed at a framework. The reference chain is engaged successively on the plates and one of the pinions. The reference chain is utilized for transmitting mechanical energy of reverse pedaling to the drive chain by the pinions.