Aerodynamic headstay foil

Details Aerodynamic headstay foil Aerodynamic headstay foil

2006-08-29

2006-08-29

Olson, Lars A. (Department: 3617)

Ships

Sail or control means therefor

Reefing and furling

C114S108000

Reexamination Certificate

active

07096812

ABSTRACT:
A foil for the headsail of a sailboat for use with a headstay has an aerodynamic shape. It includes a headstay channel for containing the headstay, which may be snapped into place in the channel. The foil has a first and second sidewall, a forward wall, and two or more tabs on the back of the forward wall, which engage the headstay. A forward luff channel is bounded one side by the first side wall and on an other side by a forward channel inner wall. An aft luff channel isbounded on one side by the second side wall and on an other side by an aft channel inner wall. Fairing tabs are affixed to an end of the first side wall, to an end of the second side wall, and to an end of an aft channel inner wall.

REFERENCES:
patent: 3802373 (1974-04-01), Lagerquist
patent: 3851609 (1974-12-01), Stearn
patent: 3866558 (1975-02-01), Bergstrom
patent: 3927633 (1975-12-01), Bernard
patent: 3948200 (1976-04-01), Hood
patent: 4340005 (1982-07-01), Lagerquist
patent: RE31829 (1985-02-01), Stearn
patent: 4619216 (1986-10-01), Crear
patent: 4646671 (1987-03-01), Innes
patent: 4947776 (1990-08-01), Peterson
patent: 5109787 (1992-05-01), Peterson
patent: 6141809 (2000-11-01), Lyngholm

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