Hydrofoil assembly for marine use, and method for mounting the s

Details Hydrofoil assembly for marine use, and method for mounting the s Hydrofoil assembly for marine use, and method for mounting the s

1994-11-30

1997-06-17

Avila, Stephen

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

114280, 440 51, B63B 124

Patent

active

056387652

ABSTRACT:
A method and an assembly are provided for mounting a pair of hydrofoils to an outboard engine without drilling holes or otherwise defacing the anticavitation plate of the engine. The assembly includes a mounting plate, an adaptor, and a pair of hydrofoils. The hydrofoils are mountable to the outer edge portions of the mounting plate. In use, the counter-rotation tab of the engine is removed and then replaced by the adaptor. The mounting plate, if not already secured to the adaptor, is coupled to the adaptor. The hydrofoils are then mounted to the opposing edges of the mounting plate. A pair of reinforcing brackets may be secured to the mounting plate such that they extend over the edge portions of the cavitation plate. The forces generated upon the mounting plate will accordingly be distributed to the anti-cavitation plate as well as the adaptor. The hydrofoils employed in the assembly preferably include rudders, which obviate the need for the counter-rotation tab replaced by the adaptor. In the event the hydrofoils do not include such rudders, a fin assembly may be mounted to the mounting plate beneath the adaptor. The hydrofoil assembly compensates for propeller torque and provides other benefits in handling a marine vessel.

REFERENCES:
patent: 3285219 (1966-11-01), Linsley
patent: 3991700 (1976-11-01), Cleary et al.
patent: 4977847 (1990-12-01), Bartlett
patent: 4995840 (1991-02-01), Seale et al.
patent: 5048449 (1991-09-01), Templeman
patent: 5138966 (1992-08-01), Whitley
patent: 5231950 (1993-08-01), Poulos

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