Patent ID: 6141809
Filing Date: 2000-11-07
Classification: B63H

Abstract:
A wing profile sail, having a sailcloth (2, 3) which encloses an inner space shaped as an airfoil, said sailcloth (2, 3) including openings (9) with a one-way closing mechanism to permit said inner space to be filled with air;said wing profile sail further comprisinga body (11) inflatable by air, located at a luff of the sail entirely within said inner space,wherein said body tapers upwards with a circular cross section and is conical when extended in height and inflated with air to engage against a front edge (1) of the sailcloth (2, 3);wherein two sides of the sailcloth (2, 3) respectively extend back from said front edge (1) and are engaged together at a rear edge of the sailcloth (2, 3);an after part (7) engaged between said two sides at the rear edge extending into the inner space as an intermediate sailcloth (13) to serve as the one-way closing mechanism when covering said openings (9); andwherein said two sides of said sailcloth (2, 3) are engaged together by a bottom area (16) to complete closure of said inner space.