A sprag one-way clutch (OWC) used within a cassette driver of the rear hub assembly of a bicycle. The new cassette driver delivers improved performance the reduction of rotation of the crank arm required before engagement within the cassette driver when the cyclist applies force to the pedals. Additionally, the sprag clutch smooth engagement minimizes friction loss during free-wheeling, therefore increasing drivetrain efficiency. These enhancements provide both safety and performance benefits by giving the cyclist greater control in moving between pedaling and free-wheeling. The current cassette driver design utilizes a sprag OWC for engagement without any modifications to current bicycle designs. A sprag cage may be used to provide a framework to support and properly position the sprags.


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    Title :

    SPRAG CLUTCH CASSETTE DRIVER


    Contributors:

    Publication date :

    2017-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



    Sprag Overriding Aircraft Clutch

    P. Lynwander / A. G. Meyer / S. Chachakis | NTIS | 1972


    Sprag-type overrunning clutch

    Daniels, R.L. | Engineering Index Backfile | 1957



    Generalized Equations for Sprag One-Way Clutch Analysis and Design

    Chesney, David R. / Kremer, John M. | SAE Technical Papers | 1998


    SPRAG CLUTCH ASSEMBLY FOR AIRCRAFT DRIVE WHEEL DRIVE SYSTEM

    EDELSON JONATHAN SIDNEY | European Patent Office | 2015

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