A bicycle front sprocket comprises a sprocket body and at least one sprocket tooth. The sprocket body includes a crank arm mounting portion including a first mounting axial surface facing toward an axial bicycle-center plane in an axial direction in a state where the bicycle front sprocket is mounted to the bicycle frame. The at least one sprocket tooth has a first chain-engagement axial surface facing toward the axial bicycle-center plane in the axial direction in a state where the bicycle front sprocket is mounted to the bicycle frame. The first chain-engagement axial surface is offset from the first mounting axial surface toward the axial bicycle-center plane in the axial direction. An axial distance is defined from the first mounting axial surface to the first chain-engagement axial surface in the axial direction and is equal to or larger than 6 mm.


    Access

    Download


    Export, share and cite



    Title :

    Bicycle front sprocket, bicycle crank assembly, and bicycle drive train


    Contributors:

    Publication date :

    2018-10-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    BICYCLE FRONT SPROCKET, BICYCLE CRANK ASSEMBLY, AND BICYCLE DRIVE TRAIN

    EMURA ATSUHIRO | European Patent Office | 2018

    Free access

    Bicycle sprocket and bicycle crank assembly

    WATARAI ETSUYOSHI / KAMADA KENJI / YUASA KOJI | European Patent Office | 2017

    Free access

    BICYCLE SPROCKET AND BICYCLE CRANK ASSEMBLY

    WATARAI ETSUYOSHI / KAMADA KENJI / YUASA KOJI | European Patent Office | 2016

    Free access

    Bicycle sprocket and bicycle crank assembly

    SUGIMOTO AKINOBU | European Patent Office | 2019

    Free access

    BICYCLE SPROCKET AND BICYCLE CRANK ASSEMBLY

    SUGIMOTO AKINOBU | European Patent Office | 2018

    Free access