An oar apparatus configured to remain submerged under water during the power stroke and the return stroke. The oar apparatus has a sheath and a shaft rotationally disposed within the sheath. An oar blade is affixed to the shaft, such that the oar blade is rotational relative to the sheath. The oar blade has a deployed orientation, in which the oar blade is substantially perpendicular to the movement direction of the vessel, and a feathered configuration, in which the oar blade is substantially parallel to the movement direction of the vessel. The oar blade is asymmetrical relative to the center axis of the shaft, such that resistance of the water exerted onto the oar blade creates a first moment urging the oar blade into the deployed orientation during the power stroke and a second moment urging the oar blade into the feathered orientation on the return stroke.


    Access

    Download


    Export, share and cite



    Title :

    Oar apparatus having a pivoting oar blade


    Contributors:

    Publication date :

    2022-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



    Oar apparatus having a pivoting oar blade

    HOLLEY WILLIAM E | European Patent Office | 2022

    Free access

    Pivoting blade counterweight

    CARVALHO PAUL A | European Patent Office | 2016

    Free access

    Pivoting system, pivoting assembly, pivoting module and seat comprising the pivoting system

    GAROTTE GÉRALD / TOUZET BERTRAND | European Patent Office | 2021

    Free access

    PIVOTING SYSTEM, PIVOTING ASSEMBLY, PIVOTING MODULE AND SEAT COMPRISING THE PIVOTING SYSTEM

    GAROTTE GÉRALD / TOUZET BERTRAND | European Patent Office | 2021

    Free access

    V-PLOW HAVING PIVOTING HORIZONTAL ADJUSTMENT

    KOCH TIMOTHY G / GAMBLE ROBERT N II / BREHMER JACOB R et al. | European Patent Office | 2016

    Free access