Title:
【考案の名称】折りたたみ式ボ-ト用プロペラ
Document Type and Number:
Japanese Patent JPS59176298
Kind Code:
U
Abstract:
A folding boat propeller assembly having a hub and two blades. The radially inner portion of each blade is pivoted to the hub. Upon forward movement of the boat, the blades will automatically be pivoted rearwardly into a closed folded-together position by water resistance. Upon rotation of the hub by the boat's engine, the blades pivot outwardly and forwardly to a driving position.
Inventors:
David Walter Beck
Application Number:
JP6295684U
Publication Date:
November 26, 1984
Filing Date:
April 27, 1984
Export Citation:
International Classes:
B63H1/24; (IPC1-7): B63H1/24