Sailboard

Details Sailboard Sailboard

1991-08-29

1993-03-23

Basinger, Sherman

Ships

Watercraft with means used in providing sailpower

Having specifically defined hull shape

114280, 441 74, 441 79, B63B 3579

Patent

active

051954443

ABSTRACT:
The present invention relates to an apparatus designed to launch a sailboard out of the water while the sailboard is being sailed on the water. The apparatus comprises launching means including a flap which is submergible in the water and pivotally supported at one end of the flap near the bottom of the sailboard. An angle of attack of the flap relative to the water is varied by a positioning means. The submerged flap is thus presented at an oblique angle to the incompressible water which thus acts as a ramp to launch the sailboard out of the water. In an alternative embodiment, a hydrofoil wing acts to lift the sailboard relative to the water surface.

REFERENCES:
patent: 3747138 (1973-07-01), Morgan
patent: 3902207 (1975-09-01), Tinkler et al.
patent: 3988794 (1976-11-01), Tinkler et al.
patent: 4441446 (1984-04-01), Fichtner
patent: 4508046 (1985-04-01), Coulter et al.
patent: 4649847 (1987-03-01), Tinkler et al.
patent: 4715304 (1987-12-01), Steinberg
patent: 4963111 (1990-10-01), Moulin

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