Boat

Details Boat Boat

1988-05-16

1989-09-19

Basinger, Sherman D.

Marine propulsion

Helical screw

440 30, 440 98, B63H 126

Patent

active

048677167

ABSTRACT:
The present invention includes a boat having a pair of rotatable elongated pontoons on opposite sides thereof. Each of the pontoons has helical flighting for propelling the boat during rotation of the pontoon. The pontoon also is filled with floatation materials so as to add to the buoyancy of the vehicle. Each pontoon is independently rotatable so as to achieve maneuverability even without a rudder.
A modified form of the present invention utilizes two independently rotatable paddle wheels.

REFERENCES:
patent: 619224 (1899-02-01), Rasmussen
patent: 812604 (1906-02-01), Sitzler
patent: 868183 (1907-10-01), Heggen
patent: 872140 (1907-11-01), Mikulasek
patent: 1000076 (1911-08-01), Cracroft
patent: 1134670 (1915-04-01), Cizek
patent: 1321304 (1919-11-01), Hamilton
patent: 1445467 (1923-02-01), Baer
patent: 1646611 (1927-10-01), Cole
patent: 2154191 (1939-04-01), Welsh
patent: 2381622 (1945-08-01), Sheppard

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