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Surfboard fin box with detachable, leashed fin

a technology of applied in the field of surfboard fins and fin boxes, to achieve the effect of controlling the amount of retentive friction

Inactive Publication Date: 2005-03-24
WHITE WILLIAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a new design for a surfboard fin box and fin that allows the fin to be connected to the box by means of a leash. The fin can be easily attached and controlled by adjusting the amount of friction exerted on the fin by the box. The fin can be re-attached easily even in the water, without needing to purchase and replace parts. The fin box has a unique design that allows for easy adjustment of the attachment device and storage of the leash directly under the fin. The fin can be easily released when struck from front or back, without any component of the fin or the box breaking. The user can also make repairs of the fin by reattaching the fin to the box. Overall, the invention provides a surfboard fin system that is easy to use and maintain."

Problems solved by technology

However, the sailboard fin box is a through-the-board system unlike surfboard systems and the fin attachment mechanism is designed to break selectively to prevent damage to the fin from striking underwater objects.

Method used

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  • Surfboard fin box with detachable, leashed fin
  • Surfboard fin box with detachable, leashed fin
  • Surfboard fin box with detachable, leashed fin

Examples

Experimental program
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Embodiment Construction

[0018] The operation of the invention can be appreciated by looking at the preferred embodiment of the invention as shown in FIG. 1. The invention consists of a fin box101 that is fixedly inserted into a surfboard100, and a leash102 attaching a fin103 to the fin box101. In FIG. 2, the leash attachment position104 and the plurality of fin attachment points105 are shown. In FIG. 5, the inserted fin103 is shown, with the leash102 stowed under the fin103 in the fin cutout106. Note that the inserted end109 of the fin103 possesses two bevel cuts106 that permit the fin103 to release easily from the fin box101.

[0019] In FIG. 3, the fin attachment points105 are shown alongside the fin box slot107, where the fin103 is inserted. In FIG. 4, it can be seen that the fin attachment points105 are slanted to the perpendicular so that the fin attachment means108 can be pressed against the side of the fin103 with adjustment pressure. In the preferred embodiment, the fin attachment means108 are a pair...

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PUM

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Abstract

A new design for a self-releasing surfboard fin and box is presented. The fin is held in the fin box by an attachment means that permits the fin to release easily when struck. The fin is retained connected to the box and the board by means of a fin leash. The fin is easily reattached by inserting the fin and then re-tightening the attachment means.

Description

FIELD OF THE INVENTION [0001] This invention relates to surfboard fins and fin boxes, where multiple fins at the aft end of the board are used for directional control and stability. BACKGROUND OF THE INVENTION [0002] Typical surfboard fin systems consist of a fin box inserted into the surface of the surfboard at its aft end on the underside of the board plus a surfboard fin that is inserted into the box and held fixedly. When a fin breaks or is damaged, the fin can be removed from the box by means of unscrewing screws or unloosening some other attachment device, removing the broken fin, and replacing it with a new one. The same attachment devices are then re-tightened or reattached and the board can be used once again. [0003] U.S. Pat. No. 5,133,681 by Lobe teaches a sailboard fin system with a leash connecting the fin to the fin box. However, the sailboard fin box is a through-the-board system unlike surfboard systems and the fin attachment mechanism is designed to break selectivel...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63B35/79
CPCB63B35/793B63B35/7926B63B32/66B63B32/64
Inventor WHITE, WILLIAM
Owner WHITE WILLIAM
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