Removable fins or surfboards for water sports boards without a mounting device

Abstract

Fins or surfboards that can be attached and removed from water sports boards without additional mounting devices, even in places where no mounting devices are available.

Description

[0001] The present invention relates to fins or surfboards that can be attached to and removed from water sports boards without additional mounting devices, even in places where no mounting devices are present.

[0002] Fins or surfboards affect the maneuverability of watersports boards. Certain uses, particularly wind-powered watersports boards, require the attachment of fins or surfboards, often without any mounting devices.

[0003] Previous inventions to solve this problem have in common that the fins or surfboards are attached to relatively complex mounting devices on the underside of the water sports board. Such mounting devices are usually secured with straps. Some inventions provide for the permanent attachment of mounting devices using adhesive. These systems, consisting of multi-part elements, are relatively expensive. Furthermore, the mounting devices and associated structures increase the cross-section of the overall structure, which adversely affects the gliding ability of the water sports board. Glued mounting devices are difficult to remove without damaging the water sports board.

[0004] Utility model DE 20 2013 001 902.6 describes a strap-mounted conversion kit for a surfboard or up-paddleboard. It does not provide details on how to attach fins to the water sports board.

[0005] Utility model DE 20 2015 006 740.9 describes a centerboard attachment, which is characterized in that the centerboard has a centerboard holder that is mounted flush on the underside of the watercraft. This invention has the disadvantages described under

[0003] , which the present invention aims to minimize.

[0006] The invention is based on the task of attaching fins or surfboards to water sports boards in places where no fastening devices are available. Known inventions are to be optimized for this purpose. The fastening structure should have as little adverse effect as possible on the gliding ability of the water sports board. The fins or surfboards should be easy to assemble and disassemble. At the same time, the fins or surfboards should be able to withstand high leverage forces. The overall construction should be as efficient and cost-effective as possible, using a small number of components.

[0007] According to the invention, this problem is solved by the fins or surfboards being shaped in such a way that they have a large surface area that can be pressed against the outer edges of a water sports board. The contact pressure secures the fins or surfboards to the water sports board.

[0008] The described surface is realized by a radial bend of the fins or surfboards adapted to a section of the curve of the outer edge of the water sports board to be used.

[0009] The radial bend of the fins or surfboards is chosen to adapt to the typical outer edge shapes of water sports boards, with sufficient flexibility to tolerate deviations in the edge shape and still ensure a stable attachment.

[0010] The radial bend can be extended tangentially along the top, bottom, or outside of the watersports board. This prevents the curved end of the fins or surfboards from slipping along the usually rounded outer edges of the watersports board.

[0011] The fins or surfboards are pressed against the outer edges of the water sports board in the area of ​​the bend and the tangential extension by one or more straps surrounding the water sports board and are thus fastened.

[0012] The fins or surfboards are provided with one or more openings for the passage of the strap used for fastening.

[0013] The belt guides can be designed like familiar bar or ladder buckles, which additionally prevents slipping along the belt.

[0014] The invention is explained in more detail below with reference to a drawing. Description of the drawing:

[0015] The drawing shows a cross-section through a water sports board (1) with attached fins (2) and a surrounding strap (5). The area of ​​the radial bend (3) and its tangential extension (4) are marked. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2013 001 902.6

[0004] DE 20 2015 006 740.9

[0005]

Claims

[1] Fins or surfboards that can be attached and removed from water sports boards without additional mounting devices, even in places where no mounting devices are available. [2] Fins or surfboards according to claim 1, which are shaped in such a way that they have a surface which can be pressed over a large area against the outer edge of a water sports board and thus can be fastened. [3] Fins or surfboards according to one of the preceding claims, characterized by a radial bend in the area of ​​the contact surface with the water sports board. [4] Fins or surfboards according to one of the preceding claims, the radial curvature of which is chosen to adapt to the typical outer edge shapes of water sports boards. [5] Fins or surfboards according to one of the preceding claims with a radial bend in the area of ​​the contact surface with the water sports board, wherein the radial bend can be extended tangentially along the upper, lower or outer edge of the water sports board. [6] Fins or surfboards according to any one of the preceding claims, made of materials which offer sufficient flexibility to tolerate deviations in the edge shape and yet ensure a stable attachment. [7] Fins or surfboards according to one of the preceding claims, which are pressed against the outer edges of the water sports board in the region of the radial bend by one or more belts surrounding the water sports board and are thereby fastened. [8] Fins or surfboards according to one of the preceding claims, which are provided with one or more openings for the passage of the strap or straps used for fastening.

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