Buoyant craft

Marine propulsion – Oscillating propelling means – Having nonpropelling cycle segment

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Details

440 23, 440 38, B63H 1102, B63H 1600

Patent

active

042468612

ABSTRACT:
A buoyant craft, such as a boat or raft, propelled by a water jet thrust of high efficiency. Such thrust is provided by a wedge shaped chamber, such as one including a substantially flat plate pivotally mounted forwardly and on the underside of the craft and having two vertical sides. Pedals are provided on an extension of the flat plate. A modification involves the use of two separate wedge shaped jet thrust chambers with a common central wall to permit better steering. Still another modification involves the use of a wedge shaped chamber made of rubber or other flexible elastomer which is squeezed by pivotal movement of the pedal-operated flat plate to effect jet propulsion.

REFERENCES:
patent: 3565032 (1971-02-01), Hertel
patent: 3732587 (1973-05-01), Fletcher

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