Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1984-12-31
1986-06-10
Basinger, Sherman D.
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114 90, 114103, B63H 908
Patent
active
045936382
ABSTRACT:
An arrangement is disclosed which secures the sail to the mast of a sailing craft to achieve an aerodynamic profile about the mast while allowing curvature in the mast for optimum sail profile. The arrangement includes an outer profile sleeve of flexible material extending from a line of securement to the rear of the luff of the sail forwardly around the mast. The profile sleeve receives one or more semi-rigid, flexible profile members comprised of lightweight plastic sections configured to be tightly fit therein, stretching the profile sleeve into a high efficiency wing shape surrounding the mast. The wing shape includes a leading parabolic surface and curved sides smoothly transitioning into the main sail area to create a lift airfoil with the sail angled either to port or starboard.
REFERENCES:
patent: Re31167 (1983-03-01), Schweitzer et al.
patent: 3132620 (1964-05-01), Court
patent: 3391668 (1968-07-01), Birchill
patent: 3802366 (1974-04-01), Mankawich
patent: 4344377 (1982-08-01), Gram
patent: 4369724 (1983-01-01), Weiss
patent: 4386574 (1983-06-01), Riolland
patent: 4388888 (1983-06-01), Gushurst, Jr.
Cochran Steven M.
Murphy Mark J.
Basinger Sherman D.
Benefiel John R.
Salmon Paul E.
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