The present invention relates to a propeller device for a marine vehicle comprising a main shaft that can be communicated with a drive engine of a marine vessel from one end; a front propeller provided on the main shaft, the front propeller having a hub and a plurality of blades extending radially outwardly from the hub; a rear propeller being co-axially to and spaced from the front propeller, the rear propeller having a hub and a plurality of blades extending radially outwardly from the hub. The device of the invention comprises a second shaft being communicated with the hub of the front propeller; and at least one support for supporting the rear propeller on the second shaft, the at least one support being not allow the second shaft to rotate in the direction of rotation of the main shaft, and being free to rotate thereof in the counter direction of rotation of the main shaft.


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    Titel :

    Torque boosting propeller device


    Weitere Titelangaben:

    Drehmomentverstärkungs-Propellervorrichtung
    Dispositif à hélice d'amplification de couple


    Beteiligte:

    Erscheinungsdatum :

    24.04.2019


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



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