A boat propeller (10) includes a gear box (20), an impeller (30), a stream-guiding ring (50), and a stream-shaping nozzle (60). The gear box (20) has a casing (21) and a transmission shaft (27) partially received in the casing (21). The impeller (30) has an impeller shaft (31) and vanes (38). The impeller shaft (31) has a hollow columnar outer shaft housing (32) and a hollow columnar inner shaft housing (33). The inner and outer shaft housings (32) are connected using a plurality of rib portions (37). The inner shaft housing (33) is further connected to the transmission shaft (27) of the gear box (20). The vanes (38) are integrated formed on an outer peripheral surface of the outer shaft. The stream-guiding ring (50) is assembled to the casing (21) of the gear box (20) to house the impeller (30). The stream-shaping nozzle (60) is connected to a rear end of the stream-guiding ring (50) for providing stream-shaping effects. Thereby, the boat propeller (10) has its water inlet diameter maximized, which helps to improve propulsive efficiency.


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    Title :

    BOAT PROPELLER


    Additional title:

    BOOTSPROPELLER
    HÉLICE DE BATEAU


    Contributors:

    Publication date :

    2020-10-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    Boat Propeller

    LIN YEUN-JUNN | European Patent Office | 2020

    Free access

    Boat Propeller

    LIN YEUN-JUNN | European Patent Office | 2020

    Free access

    BOAT PROPELLER

    LIN YEUN-JUNN | European Patent Office | 2020

    Free access

    BOAT PROPELLER

    LIN YEUN-JUNN | European Patent Office | 2020

    Free access

    Boat Propeller

    LIN YEUN-JUNN | European Patent Office | 2020

    Free access