Small-sized self-propelled watercraft

Details Small-sized self-propelled watercraft Small-sized self-propelled watercraft

1989-06-30

1990-11-20

Basinger, Sherman

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

123585, 114270, 440 1, B63B 3572

Patent

active

049715860

ABSTRACT:
A self-propelled portable watercraft, including a deck and hull, an engine, and a waterjet propulsion system, capable of operating while a supply of air is unavailable. The air substitute, consisting of a mixture of oxidizing gas and recycled exhaust gas, is delivered to the engine through a self-actuated control valve. In addition, the waterjet propulsion system is equipped with an intake port at the terminus of a narrow, elongated, hollow downward extension of the hull. The purpose of the extension being to minimize the occurrence of a loss of thrust which can result when the craft is vertically displaced above the surface of the surrounding water.

REFERENCES:
patent: 3262413 (1966-07-01), Douglas et al.
patent: 3548778 (1970-12-01), Von Smagala-Romanoff
patent: 3807373 (1974-04-01), Chen
patent: 4494488 (1985-01-01), Wheatley

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