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US 8,408,958 B2Granted
Pivoting fin with securement
OwnerRoger A. Benhaminventor
Life of this patent
Estimating the term…
Abstract
A pivoting fin used to control the movement of a surfboard. The pivoting fin is provided with a rotatable hinge allowing the fin to rotate in the “roll” axis of the surfboard. The rotatable hinge is inserted into base position which in turn is secured to the underside of the surfboard.
Claims17
An assembly for pivotally attaching a fin in the roll axis with respect to a surfboard, the assembly comprising:
- a rotatable hinge attached to the bottom of the fin;
- a hollow base portion attached to the bottom of the surfboard, said hollow base portion provided with an opening on one end into which said rotatable hinge is longitudinally inserted;
- and
- a mechanism for movably attaching said rotatable hinge to said hollow base portion, said mechanism comprising a hollowed-out portion in said rotapble hinge, a bushing movably secured in said hollowed-out portion, and a first fastener connecting said hollow base portion to said bushing;
- wherein
- when hydrodynamic force is applied to one side of the fin, the fin will rotate in the roll axis due to rotatable movement of said rotatable hinge within said hollow base portion.
3 more elements
An assembly for pivotally attaching a fin in the roll axis with respect to a surfboard, the assembly comprising:
- a rotatable hinge attached to the bottom of the fin;
- a hollow base portion attached to the bottom of the surfboard, said hollow base portion provided with an opening on one end into which said rotatable hinge is longitudinally inserted;
- and
- a mechanism for movably attaching said rotatable hinge to said hollow base portion, said mechanism including a slot provided in said rotatable hinge, and a fastener connecting said hollow base portion to said slot of said rotatable hinge, said fastener passing through a hole in said hollow base portion;
- wherein
- when hydrodynamic force is applied to one side of the fin, the fin will rotate in the roll axis due to rotatable movement of said rotatable hinge within said hollow base portion.
3 more elements
An assembly for pivotally attaching a fin in the roll axis with respect to a surfboard, the assembly comprising:
- a rotatable hinge attached to the bottom of the fin, one end of said rotatable hinge provided with a slot;
- an elastomeric material provided in said slot;
- a hollow base portion attached to the bottom of the surfboard, said hollow base portion provided with an opening on one end into which said rotatable hinge is longitudinally inserted;
- and
- a mechanism for movably attaching said rotatable hinge to said hollow base portion;
- wherein
- when hydrodynamic force is applied to one side of the fin, the fin will rotate in the roll axis due to the rotatable movement of said rotatable hinge within said hollow base portion.
4 more elements
Dependencies are inferred from the claim text.