Device for the mast of a sailboat
OwnerPer-Gunnar Thoreseninventor
Life of this patent
Estimating the term…
Abstract
A main sail's mast rope is inserted into a hollow profile, which is aerodynamically designed and hinged by at least one ring around a substantially round mast. The profile can rotate around the mast about 90.degree. on each side. The shape and function of the profile provide an ideal flow curve for air flow over the mast, profile and sail. The inside of the profile can be designed for roller reefing where the sail is rolled up on a stay provided inside the profile.
Claims20
A mast and profile combination for a sailboat, the mast being of a substantially round shape, the profile being hollow, aerodynamically designed and supported by the mast, the profile being constructed to accommodate a mast rope of at least one sail of the sailboat, the profile comprising:
- two long sides, the two long sides being of substantially equal length, the two long sides being slightly convex and terminating at a distance from each other to form a slot opening, the slot opening being constructed to accommodate at least one sail therethrough;
- and
- a short side connected to the two long sides, the short side being substantially concave and substantially corresponding to a sector of a circle;
- the combination further comprising at least one ring element connecting the profile to the mast to provide rotation of the profile relative to the mast within a sector of about 180 degrees, such that the profile can be positioned at an angle to provide desired tractive power to the sailboat.
A mast and profile combination for a sailboat, the mast being of a substantially round shape and having a substantially convex outer surface, the profile being supported by the mast, the profile being constructed to accommodate a mast rope of at least one sail of the sailboat, the profile comprising:
- two long sides, the two long sides terminating at a distance from each other to form a slot opening, the slot opening being constructed to accommodate the at least one sail therethrough;
- and
- a short side connected to the two long sides, the short side being substantially concave and substantially corresponding to a sector of a circle;
- the combination further comprising at least one ring element connecting the profile to the mast to provide rotation of the profile relative to the mast such that the profile can be positioned at an angle to provide desired tractive power to the sailboat, an inside surface of the ring element being of substantially concave shape and corresponding to the substantially convex outer surface of the mast;
- wherein the outer surface of the mast, the short side of the profile, and the ring element have a substantially identical center of curvature.
A mast and profile combination for a sailboat, the combination comprising:
- a mast of substantially round shape and having a substantially convex outer surface;
- profile means for accommodating a mast rope of at least one sail of the sailboat, the profile means comprising:
- two long sides, the two long sides terminating at a distance from each other to form a slot opening, the slot opening being constructed to accommodate the at least one sail therethrough;
- and
- a short side connected to the two long sides, the short side being substantially concave and substantially corresponding to a sector of a circle;
- and
- ring means for providing rotation of the profile relative to the mast such that the profile can be positioned at an angle to provide desired tractive power to the sailboat, the ring means connecting the profile to the mast, an inside surface of the ring means being of substantially concave shape and being substantially parallel to the substantially convex outer surface of the mast.
Dependencies are inferred from the claim text.