Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1991-09-27
1993-05-18
Basinger, Sherman
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114 91, B63B 3579
Patent
active
052111237
ABSTRACT:
An improved sailboard in which the sail assembly is mounted to the board in a manner to allow pivoting about an axis inclined rearwardly and also about a horizontal pivot pin. The sail assembly is supported from a shaft secured in the board and having an axis which is inclined toward the rear of the board. A spindle is mounted by suitable bearing on the inclined shaft and the sail assembly is secured to the spindle by a horizontal pivot pin. The sail assembly includes the sail, a wishbone tiller, a mast and a boom. The boom is secured to the horizontal pivot pin and the mast is pivotally mounted to the boom with the sail supported by both. A pawl is provided to secure the mast in its operating position with respect to the boom and when released allows the mast to pivot toward the boom to collapse the sail. A collar on the spindle having a forwardly opening slot and a pin on the shaft for entering the collar slot, the function of which is to prevent boom rotation when the sail assembly is in its most aft position.
REFERENCES:
patent: Re31167 (1983-03-01), Schweitzer et al.
patent: 3707935 (1973-01-01), Rachie
patent: 4311107 (1982-01-01), Imre
patent: 4473022 (1984-09-01), Eastland
patent: 4541355 (1985-09-01), Denton
patent: 4774901 (1988-10-01), Baldwin
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