Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm
Patent
1982-09-30
1985-02-19
Blix, Trygve M.
Marine propulsion
Operator powered drive for propelling means
Rotary cranking arm
440 90, B63H 1600
Patent
active
045002975
ABSTRACT:
A small watercraft comprised of a main floatation body having a seat portion. A pair of spaced apart side booms or a continuous U-shaped boom extend forwardly of the main floatation body one to each side of the main floatation body. An open area is defined between the side booms. A crank axle is retained transversely across the side booms over the open area. The crank axle has crank formations formed therein to impart axial rotation of opposed end portions of the axle. Water propelling means are secured to each opposed end portions of the axle to propel the floatation body on a water surface.
REFERENCES:
patent: 1060434 (1913-04-01), Demas
patent: 3045636 (1962-07-01), Thomas et al.
patent: 3132623 (1964-05-01), Conklin
patent: 3999501 (1976-12-01), Duarte
patent: 4376420 (1983-03-01), Fracarossi
Blix Trygve M.
Sotelo Jesus D.
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