The present invention pertains to a toothed pulley (21) for a bicycle rear derailleur (100), the pulley (21) carrying on each of its side faces a polygonal cushioning ring (24) made of an elastically deformable material and adapted to come in contact with link plates of a roller chain (23) running over the pulley (21), wherein the pulley (21) includes respective circumferential supports (25) formed adjacent to each side face of the pulley (21) and extending axially away from the side face of the pulley (21), wherein each polygonal cushioning ring (24) is supported in a rotationally secured manner by a respective circumferential support (25), wherein in a side view of the pulley (21), as seen in the axial direction, each polygonal cushioning ring (24) has a preformed polygonal outline at the face facing the roller chain (23), wherein the number of corners of the polygonal cushioning ring (24) is equal to the number of teeth (22) of the pulley (21), and wherein the corners of the polygonal cushioning ring (24) are angularly offset from the centers of the teeth (22) of the pulley (21) by the half angular distance between adjacent teeth (22) of the pulley (21) in a mounted state of the polygonal cushioning ring (24).


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    Title :

    PULLEY FOR A REAR DERAILLEUR OF A BICYCLE


    Additional title:

    RIEMENSCHEIBE FÜR EINE KETTENSCHALTUNG EINES FAHRRADS
    POULIE POUR UN DÉRAILLEUR ARRIÈRE DE BICYCLETTE


    Contributors:

    Publication date :

    2025-04-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / F16H Getriebe , GEARING



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