The present invention relates to a fin box adapted to be fitted to a watercraft and to receive a fin having a base. The fin box includes an elongate receiving portion having a length. The base is adapted to be inserted into the receiving portion substantially laterally. The fin during insertion into
The present invention relates to a fin box adapted to be fitted to a watercraft and to receive a fin having a base. The fin box includes an elongate receiving portion having a length. The base is adapted to be inserted into the receiving portion substantially laterally. The fin during insertion into the receiving portion is disposed at a lower than 90 degree angle to the receiving portion.
대표청구항▼
1. A fin system comprising: a fin box securable to a watercraft and a fin, the fin box including: a receiving portion having opposing first and second fin box side walls and an opening; andat least one protrusion extending from the first fin box side wall; anda fin including: a body having a leading
1. A fin system comprising: a fin box securable to a watercraft and a fin, the fin box including: a receiving portion having opposing first and second fin box side walls and an opening; andat least one protrusion extending from the first fin box side wall; anda fin including: a body having a leading edge, a trailing edge, a first side face and a second side face in opposition to the first side face, the first and second side faces extending between the leading and trailing edges; anda base mounting portion having a first side having a at least one slot and an opposing second side,wherein the base mounting portion is insertable into the receiving portion in a first position in which the at least one protrusion is located adjacent to the at least one slot and the body is angularly inclined relative to a plane passing across the opening of the receiving portion, andwherein the body is pivotable to a second position in which the at least one protrusion is located in the at least one slot and the body is generally perpendicular to the plane passing across the opening of the receiving portion. 2. The fin system of claim 1, wherein a fillet extends between the base mounting portion and the body around an entire perimeter of the fin, the fillet providing a transition between an underside of the watercraft and the body, such that a tangent of the fillet at an edge of the base mounting portion is substantially coincident with an adjacent underside region of the watercraft. 3. The fin system of claim 1, wherein the receiving portion is longer than the base mounting portion and the base mounting portion is longitudinally movable between two or more positions within the receiving portion. 4. The fin system of claim 3, wherein the at least one slot in the base mounting portion includes a first slot and a second slot located adjacent each other, and the fin box includes a second elongate protrusion located adjacent to the at least one protrusion, and an impediment is located between the first and second elongate protrusions, such that a longitudinal position of the fin relative to the fin box may be selectively varied by locating the impediment in either the first slot or the second slot. 5. The fin system of claim 4, wherein the first and second elongate protrusions and the impediment are located adjacent to an upper edge of the receiving portion. 6. The fin system of claim 1, further comprising a biasing means to prevent any undesired movement of the fin when secured to the fin box. 7. The fin system of claim 6, wherein the biasing means drives a flexible or rotatable arm with a head. 8. The fin system of claim 1, wherein an external surface of the receiving portion comprises a framework for bonding with an adhesive material for affixing the fin box to the watercraft. 9. The fin system of claim 8, wherein the external surface includes a guiding means for directing flow of the adhesive material during installation. 10. The fin system of claim 9, wherein the guiding means includes channels provided throughout a wall of the receiving portion to enable penetration of the adhesive material so as to encapsulate selected portions of the framework. 11. The fin system of claim 1, further comprising a removable infill insertable within the receiving portion. 12. The fin system of claim 11, wherein an upper surface of the removable infill is shaped to correspond with a depth to which a layer of resin covering the fin box is desired to be sanded during installation. 13. The fin system of claim 12, wherein the upper surface of the removable infill is shaped so as to allow a surface of a surfboard to be sanded to a curved profile from front to rear of the fin box. 14. The fin system of claim 13, wherein the removable infill is releasably attached to a removable lid to seal the receiving portion. 15. The fin system of claim 14, wherein the removable lid includes one or more indicators for indicating a thickness of the removable lid. 16. The fin system of claim 15, further comprising a positioning means for angular adjustment of the fin box relative to the watercraft. 17. The fin system of claim 16, wherein the positioning means includes a plate removably attachable to the removable lid by a fastening means, the fastening means including a threaded fastener, a quarter turn fastener, a press, or a clip fit mechanism. 18. The fin system of claim 1, wherein the fin is securable to the fin box with a fastener. 19. The fin system of claim 18, wherein the fastener is insertable into a fastener receiving hole, and wherein a force applied by the fastener provides a clamping force between an underside of the at least one protrusion and an upper region of the at least one slot. 20. The fin system of claim 1, wherein the fin box further includes a recessed step located within the opening of the receiving portion, the recessed step extending generally parallel with the plane passing across the opening of the receiving portion. 21. The fin system of claim 20, wherein the recessed step has a depth generally corresponding to a thickness of an edge portion extending around a perimeter of the body adjacent to the base mounting portion. 22. A fin comprising: a body; anda base portion, the base portion being removably received in a fin box mounted to an underside of a watercraft, wherein a fillet extends between the base portion and the body around an entire perimeter of the body, the fillet providing a transition between the underside of the watercraft and the body, such that a tangent of the fillet at an edge of the base portion is substantially coincident with an adjacent underside region of the watercraft, wherein an underside of the base portion of the fin is cored out to provide a hollow for receiving a removable stiffening element for controlling a lateral stiffness of the fin. 23. The fin of claim 22, wherein the removable stiffening element has different material stiffness characteristics to the body. 24. The fin of claim 23, wherein the underside of the base portion of the fin has a concave curved profile between leading and trailing edges of the fin to accommodate a convex curve in the underside of the watercraft.
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이 특허에 인용된 특허 (10)
Molnar Ferenc (Micheldorf ATX) Kirner Helmut (Wessling DEX), Assembly for fastening a fin to a sailboard.
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