A bottom bracket assembly with interconnected axle and crank arms. Each end of the axle has a plurality of angled surfaces and a recess formed with a depth through at least the axle perimeter and at least partially around the perimeter of the axle. Each crank arm has a slot formed a distance along the length such that the end of the crank arm is separated into two deflectable jaws. A bore is formed orthogonal to the slot and a fastener is installed in the bore, wherein the fastener has a length to span the slot in the crank arm to engage both deflectable jaws. The fastener has a shank radius that extends to a depth of the recess. Removal of the crank arm from the axle end is opposed when the fastener is in the bore.


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    Title :

    MECHANICALLY INTERLOCKED SPLINE FOR CRANK AND BOTTOM BRACKET INTERFACE OF A MICROMOBILITY VEHICLE



    Publication date :

    2024-07-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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    Free access

    MECHANICALLY INTERLOCKED SPLINE FOR CRANK AND BOTTOM BRACKET INTERFACE OF A MICROMOBILITY VEHICLE

    FITTZ CASEY / REIMER ANDREW / SALDANHA NEIL et al. | European Patent Office | 2024

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