Transmission device for bicycles and the like

Details Transmission device for bicycles and the like Transmission device for bicycles and the like

B - Operations, Transporting

62

M

B62M 1/08 (2006.01)

Patent

CA 2588383

The invention concerns a transmission device for bicycles and the like of the type wherein a toothed chain-wheel, driven by the user, transmits the movement to the wheel (1) via a sprocket (13), with an interposed free-wheel device (18). The invention is characterized in that the toothed chain-wheel (4) is mounted on the shaft (2) of the wheel (1) and drives a sprocket (14) on the shaft of which is keyed a second sprocket (15) driving the sprocket (13) of the wheel via planetary gear wheels. The toothed chain-wheel (4) is driven with an interposed free-wheel device, by a sprocket (6) meshing with a toothed sector located at the end of an arm articulated on the machine through its other free end and extending beyond its pivot pin into a lever on the free end of which the user acts.

Dispositif de transmission pour cycles et analogues du genre de ceux où un plateau denté, entraîné par l'utilisateur, transmet le mouvement à la roue (1 ) par l'entremise d'un pignon (13), avec interposition d'un dispositif à roue libre (18), caractérisé en ce que le plateau denté (4) est monté sur l'arbre (2) de la roue (1 ) et entraîne un pignon (14) sur l'arbre duquel est claveté un second pignon (1 5) entraînant le pignon (13) de la roue par l'entremise de pignons satellites. Le plateau denté (4) est entraîné, avec interposition d'un dispositif à roue libre, par un pignon (6) en prise avec un secteur denté situé à l'extrémité d'un bras articulé sur l'engin par son autre extrémité et se prolongeant au-delà de son axe d'articulation en un levier sur l'extrémité libre duquel l'usager agit.

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