Pivotable bulb mounted foil for sailboats

Details Pivotable bulb mounted foil for sailboats Pivotable bulb mounted foil for sailboats

2005-05-03

2005-05-03

Avila, Stephen (Department: 3617)

Ships

Watercraft with means used in providing sailpower

With hydrofoil for providing vertical lift to hull

C114S140000

Reexamination Certificate

active

06886481

ABSTRACT:
A pivotable deployable bulb mounted foil apparatus for a sailboat can pivot a foil mounted within a keel bulb remotely as needed to provide lateral resistance for the sailboat. The foil or foils can be rotated between a nested position for greater speed when the foils are not needed for lateral resistance in the water to an extended or operative position when needed for lateral resistance. The pivotal bulb mounted foil is especially adapted for use with a canting keel where the sailboat loses its lateral resistance from the keel when the keel is canted.

REFERENCES:
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patent: 3324815 (1967-06-01), Morales
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patent: 4686922 (1987-08-01), Burroughs
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patent: 5448963 (1995-09-01), Gallington
patent: 5967074 (1999-10-01), Frantl et al.
patent: 6019059 (2000-02-01), Kelsey
patent: 6349659 (2002-02-01), Hood
patent: 6397771 (2002-06-01), Levi et al.
patent: 6453836 (2002-09-01), Ditmore

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