A most typical shape of a boat propelled by manpower is a shape having an enlarged central part to generate large resistance force against propulsion, and a most economical type-air injection body of the boat has a thick wall such that rowing becomes difficult. To resolve this problem, the present invention provides a manpower propulsion boat, which can be operated by using a passenger′s physical ability in a relatively easy manner even when the manpower propulsion boat has large propulsion resistance, and more specifically, provides a manpower propulsion boat having a propulsion device with the shape of a fin of a fish. The propulsion device is invented by applying a technology regarding a vibration wing to an L-shaped oar. The propulsion device allows the passenger to row while looking forward and to easily change the direction where the boat is moving and the invention has a measure to prevent damage caused by impact from collision with an underground obstacle. Compared to conventional technology in the same technical field, the manpower propulsion boat includes three kinds of measures for restriction to maintain propulsion efficiency and maximize simplicity. First, there is a limit when the passenger tilts the propulsion device through vertical movement of his/her arms. Second, a wing of the propulsion device has no contact with a longitudinal center line of the ship body within a predetermined movement range. Third, there is a limit of a predetermined degree when the propulsion device generates a propelling force below a part of the ship body, which is submerged under water.


    Access

    Download


    Export, share and cite



    Title :

    HUMAN POWERED WATERCRAFT AND ITS PROPULSION DEVICE THEREOF


    Contributors:
    SHIN BINTZ (author)

    Publication date :

    2015-09-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

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



    Human powered watercraft propulsion device

    GARRETT PATRICK D | European Patent Office | 2017

    Free access

    Human powered watercraft with fin propulsion

    GARTHWAITE MARTIN SPENCER | European Patent Office | 2015

    Free access

    Human powered watercraft

    KRAH DREW ALLEN / KRAH MAYA JANE / KRAH GLEN EDWARD | European Patent Office | 2022

    Free access

    Human-powered watercraft

    HANSEN PAUL | European Patent Office | 2015

    Free access

    Human-Powered Watercraft

    KNOWLES STEPHEN CURTIS | European Patent Office | 2016

    Free access