Water jet propulsion unit

Details Water jet propulsion unit Water jet propulsion unit

1991-07-22

1993-10-19

Swinehart, Edwin L.

Marine propulsion

Jet drive

440 53, B63H 1100

Patent

active

052540235

ABSTRACT:
A number of embodiments of watercraft having jet propulsion units contained within a tunnel in the hull and wherein the jet propulsion unit is pivotal about a first transversely extending horizontal pivot axis for bringing the jet propulsion unit through trim adjusted positions to an upward out of the water position. In addition, the jet propulsion unit is rotatable about a horizontal longitudinally extending axis so that its downwardly facing water inlet portion may be rotated upwardly for access through an access opening in the hull for servicing. In one embodiment, the jet propulsion unit is only rotatable about the horizontal longitudinally extending axis. A number of embodiments of rudder assemblies are also depicted supported by the steering nozzle for generating steering effects when the steering nozzle is not generating a significant steering effect and which may be pivoted to an out of the water position for protection when underwater obstacles are struck.

REFERENCES:
patent: 2961988 (1960-11-01), Wood
patent: 3207116 (1965-09-01), France
patent: 3270699 (1966-09-01), Bush
patent: 3422788 (1969-01-01), Horan, Jr.
patent: 3478712 (1969-11-01), Fox
patent: 3949700 (1976-04-01), Baroody
patent: 3976026 (1976-08-01), Eastling
patent: 4568291 (1986-02-01), Nelson

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