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US 4,283,943 AGranted
Method and apparatus for indicating and adjusting the angular position of a sail
OwnerGeorge H. Schoneberger, Jr.inventor
Life of this patent
Estimating the term…
Abstract
Apparatus and method for indicating and adjusting the angle between the horizontal tangent to the luff of a sail and the direction of the apparent wind.
Claims2
Apparatus for directly indicating the horizontal angle between the tangent to the luff or effective luff of a sail and the direction of the apparent wind, comprising:
- (a) a bracket carried by the luff or effective luff of said sail;
- (b) a wind vane pivotally mounted on said bracket, which
- (i) is continuously responsive to the direction of the apparent wind at angles between and including the optimum angle for maximum sail pulling power and the angle at which said sail stalls, and
- (ii) directly indicates said horizontal angle.
1 more element
Apparatus for directly indicating the horizontal angle between the tangent to the luff or effective luff of a sail and the direction of the apparent wind, comprising:
- (a) an elongate bracket member having a forward end and a rear end;
- (b) means for attaching the rear end of said bracket to the effective luff portion of sail with the forward end of said bracket extending horizontally forward of said luff;
- and
- (c) a wind vane pivotally mounted on the forward end of said bracket, which
- (i) is continuously responsive to the direction of the apparent wind at angles between and including the optimum angle for maximum sail pulling power and the angle at which said sail stalls, and
- (ii) directly indicates said horizontal angle.
3 more elements
Dependencies are inferred from the claim text.