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US 5,176,096 AGranted
Assembly for fastening a fin to a sailboard
AssigneeF2 International Ges.m.b.H.
InventorsFerenc Molnar, Helmut Kirner
Life of this patent
Estimating the term…
Abstract
The assembly for fastening a fin to a sailboard comprises a fin receiving box secured in the sailboard and having an opening to receive a fin shaft. A conical or wedge seat is provided between the fin shaft and the opening in order to warrant a firm attachment of the fin.
Claims45
An assembly for fastening a fin to a sailboard comprising:
- a fin shaft, the fin shaft having a top edge, a front edge, a bottom edge and a rear edge, the front edge extending from the top edge to the bottom edge;
- and
- a fin receiving box secured in the sailboard and having an opening to receive the fin shaft, the opening of the receiving box having at least one side facing one side of the fin shaft, said both sides being inclined at an acute angle with respect to a central axis of the fin shaft to form a wedge seat between he fin shaft and the fin receiving box, the fin shaft being tapering in the direction toward a free end of the fin shaft, the opening of the fin receiving box mates with the fin shaft, wherein substantially the entire front edge of the fin shaft is of curved shape, said curved shape of said front edge being a segment of a circle, and wherein the fin shaft rear edge is inclined obliquely with respect to the central axis of the fin shaft.
Dependencies are inferred from the claim text.