Disclosed is a crank variable-speed gear device (100) wherein the gear ratio can be increased to 1.6:1 to 1.8:1 through a gear assembly and a latch assembly, and the gear ratio can also be changed to 1:1, if necessary, thereby providing an excellent transmission efficiency, facilitating the manipulation thereof, and making it possible to provide a compact and lightweight bicycle.


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    Titel :

    CRANK VARIABLE-SPEED GEAR DEVICE FOR INCREASING ROTATIONAL POWER


    Beteiligte:
    HAN JANG YOUNG (Autor:in) / SEO DAL WON (Autor:in)

    Erscheinungsdatum :

    2022-01-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



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