Sail airfoil device

Ships – Sail or control means therefor – Specific sail structure or arrangement

Patent

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Details

114106, B63H 906

Patent

active

048799610

ABSTRACT:
An airfoil device includes an inflatable structure for attachment to an existing sail to form a sail assembly. The inflatable structure is dimensioned and arranged to extend over a substantial portion of the existing sail and a valve arrangement is included for enabling a user to inflate and deflate the inflatable structure while it is so attached to thereby vary the sail assembly shape. The inflatable structure includes inner and outer layers that define an enclosed interior suitable to contain a pressurized gas for inflation purposes, and they are dimensioned and arranged to provide an airfoil shape to the sail assembly when the inflatable structure is inflated. The inflatable structure may be arranged to be either removably or fixedly attached, and various configurations are disclosed to enable use with various types of sails for all points of sailing under various wind conditions.

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