Ships – Building – Canal and ferry boats
Patent
1975-11-03
1977-05-10
Blix, Trygve M.
Ships
Building
Canal and ferry boats
9 13, 114123, B63B 708
Patent
active
040218732
ABSTRACT:
A circular watercraft has a buoyant, generally toroidal hull supporting a rigid deck with an outer periphery in substantial conformance with the perimeter of the hull. The deck has an opening located above the central opening of the hull to permit placement of power means to drive and steer the watercraft. The hull can be an inflated structure such as an inner tube. A stabilizer assembly connected to the hull and deck lends horizontal and vertical stability to the craft. Reserve floatation can be provided by an auxiliary torodial pontoon nested within the central opening of the hull but normally located above the water line.
REFERENCES:
patent: 2698447 (1955-01-01), Potts et al.
patent: 2752616 (1956-07-01), Coates et al.
patent: 2929080 (1960-03-01), Daily
patent: 2962732 (1960-12-01), Marz
patent: 2991746 (1961-07-01), Cunningham
patent: 3665534 (1972-05-01), McIntyre
patent: 3696451 (1972-10-01), Thompson
patent: 3812805 (1974-05-01), Forssell et al.
Blix Trygve M.
Goldstein Stuart M.
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