Tool device system and method for watercraft fin insertion and removal

Abstract

Disclosed is a tool for watercraft fin insertion and removal. The tool includes: a first external elongated layer, a second external elongated layer, aligned with, and positioned at a substantially parallel plane to the plane of, the first external layer. An internal layer is positioned between, and stretches across a portion of the area of, the external layers. Upon positioning the tool such that the inner surfaces of the external layers are adjacent to the outer surfaces of the watercraft fin, a curved fin engagement elements on the edge of the internal layer, complements at least a portion of the leading edge or the trailing edge of the watercraft fin.

Claims

1. A tool for watercraft fin removal, said tool including: a first external elongated layer; a second external elongated layer, aligned with, and positioned at a substantially parallel plane to the plane of, said first external layer; an internal layer positioned between, and stretching across a portion of the area of, said first layer and said second layer; and wherein, upon positioning the tool such that a curved fin engagement element of said internal layer complements a portion of the trailing edge of the watercraft fin, a fin box engagement section of said first and second external layers comes in contact with the fin box of the watercraft fin, acting as a lever fulcrum of said tool when said tool is forced upwards and against the trailing edge of the watercraft fin.

2. The tool according to claim 1, wherein said internal layer stretches across the area of a first of two sides of said tool; and wherein said curved fin engagement element of said internal layer, is located along the ending line of the first side.

3. The tool according to claim 2, wherein at least a section of the first side of said tool is shaped as a handle, having its bottom long edge, or part thereof, shaped to accommodate the fingers of a user's hand.

4. The tool according to claim 3, wherein at least a section of the second side of said tool is shaped as a palm support, having its top long edge, or part thereof, shaped to accommodate the palm of a user.

5. The tool according to claim 2, wherein said internal layer includes: said curved fin engagement elementpositioned closer to, and forming a sharp angle with, a top long edge of said toolcomplementing at least a portion of the trailing edge of the watercraft fin; and, a second curved fin engagement element positioned closer to, and forming a sharp angle with, a bottom long edge of said toolcomplementing at least a portion of the leading edge of the watercraft fin.

6. The tool according to claim 1, wherein at least a portion of the edge, of said fin box engagement section is covered with a non-slip material.

7. The tool according to claim 6, wherein the edge of said non-slip material is jagged.

8. The tool according to claim 1, wherein said curved fin engagement element of said internal layer is covered with a non-slip material.

9. The tool according to claim 8, wherein on the second side of said tool, at least a portion of the inner surface of said first external elongated layer and at least a portion of the inner surface of said second external elongated layer are covered with a non-slip material.

10. The tool according to claim 1, wherein said first external elongated layer, said second external elongated layer and said internal layer are separately formed and are connected to each other to form said tool.

11. The tool according to claim 10, wherein said first external elongated layer, said second external elongated layer and said internal layer are connected to each other by an adhesive material or by screws and bolts.

12. The tool according to claim 10, wherein said first external elongated layer, said second external elongated layer and said internal layerare cut from within a sheet or platter of the same material.

13. The tool according to claim 1, wherein said first external elongated layer, said second external elongated layer and said internal layerare collectively molded to form the shape of said tool.

14. The tool according to claim 1, wherein said first external elongated layer, said second external elongated layer and said internal layerare collectively shaped out of a single block of material by a router to form the shape of said tool.

15. The tool according to claim 1, wherein said first external elongated layer, said second external elongated layer and said internal layerare collectively shaped out by a 3-dimensional printer to form the shape of said tool.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings:

(2) FIG. 1A is a perspective transparent/see-through view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention;

(3) FIG. 1B is a perspective exploded view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention;

(4) FIG. 2A is a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown, along with a watercraft fin and a fin box thereof, in a fin removal position;

(5) FIG. 2B is a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown, along with a watercraft fin and a fin box thereof, in a fin insertion position;

(6) FIG. 3A is a side view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in a fin removal position;

(7) FIG. 3B is a side view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in a fin insertion position;

(8) FIG. 4A is a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool includes non-slip covered edges/areas and is shown, along with a watercraft fin and a fin box thereof, in a fin removal position;

(9) FIG. 4B is a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool includes non-slip covered edges/areas and is shown, along with a watercraft fin and a fin box thereof, in a fin insertion position;

(10) FIGS. 5A-5F are diagrams of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in: a perspective view (FIG. 5A), a side view (FIG. 5B), a top view (FIG. 5C), a bottom view (FIG. 5D), a back/handle-side view (FIG. 5E) and a front/fin-box-engagement-side view (FIG. 5F);

(11) FIGS. 6A-6C are perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the removal of a surfboard fin of a first fin connection system;

(12) FIGS. 7A-7C are perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the insertion of a surfboard fin of a first fin connection system;

(13) FIGS. 8A-8C are perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the removal of a surfboard fin of a second fin connection system; and

(14) FIGS. 9A-9B are perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the insertion of a surfboard fin of a second fin connection system.

(15) It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.

DETAILED DESCRIPTION

(16) In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of some embodiments. However, it will be understood by persons of ordinary skill in the art that some embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, units and/or circuits have not been described in detail so as not to obscure the discussion.

(17) Functions, operations, components and/or features described herein with reference to one or more embodiments, may be combined with, or may be utilized in combination with, one or more other functions, operations, components and/or features described herein with reference to one or more other embodiments.

(18) The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items. As used herein, the singular forms a, an, and the are intended to include the plural forms as well as the singular forms, unless the context clearly indicates otherwise. It will be further understood that the terms includes, including, comprises and/or comprising, when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

(19) Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one having ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

(20) In describing the invention, it will be understood that a number of techniques and steps are disclosed. Each of these has individual benefit and each can also be used in conjunction with one or more, or in some cases all, of the other disclosed techniques. Accordingly, for the sake of clarity, this description will refrain from repeating every possible combination of the individual steps in an unnecessary fashion. Nevertheless, the specification and claims should be read with the understanding that such combinations are entirely within the scope of the invention and the claims.

(21) The present disclosure is to be considered as an exemplification of the invention, and is not intended to limit the invention to the specific embodiments illustrated by the figures or description below.

(22) According to some embodiments of the present invention, there may be provided a tool, device, system and method for watercraft fin insertion and removal.

(23) A tool for watercraft fin insertion and removal, in accordance with some embodiments, may include an elongated first external layer and a substantially similar second external layer aligned therewith. An internal layer may stretch across the area of a first side of the elongated external layers, positioned and connecting between them.

(24) The outer edge of the internal layer may run along the edges of the external layers, wherein the edge of the ending line of the area covered by the internal layerat or around the central section of the elongated external layersincludes one or more Fin Engagement Elements (which may also be interchangeably referred to herein, as Curved Fin Engagement Element(s)) to accommodate the leading edge and/or the trailing edge of the watercraft fin.

(25) The bottom line of the tool, may widen at the second side of the elongated external layers, to form a wide curved Fin Box Engagement section.

(26) In FIG. 1A, there is shown a perspective transparent/see-through view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention.

(27) In the figure, the top and bottom edges of the tool are shown. Further shown are the first side and second side of the tool, and its external layers. The internal layer of the tool is shown to end substantially at the center section of the tool, forming two curved fin engagement elements.

(28) On the first side of the tool, the layers of the tool are shown to have fingers accommodating curves, on the bottom edge, forming a grip/handle section of the tool for the first hand of a user. On the second side of the tool, the external layers are shown to widen at the bottom edge of the tool, forming a wide curved fin box engagement section having a leverage point/section/axis on its edge. Also, on the second side of the tool, the external layers are shown to have a slight indent/curve at the top edge of the tool, forming a hand support section for the second hand of a user.

(29) In FIG. 1B, there is shown a perspective exploded view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention.

(30) In the figure, the external layers and the internal layer of the tool are separately shown. The internal layer is shown to be shorter and end substantially at the center section of the tool, forming two curved fin engagement elements.

(31) On the first side of the tool, the layers of the tool are shown to have fingers accommodating curves, on the bottom edge, forming a grip/handle section of the tool for the first hand of a user. On the second side of the tool, the external layers are shown to widen at their bottom edges, forming a wide curved fin box engagement section having a leverage point/section/axis on its edge. Also, on the second side of the tool, the external layers are shown to have a slight indent/curve at the top edge of the tool, forming a hand support section for the second hand of a user.

(32) In FIG. 2A, there is shown a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown, along with a watercraft fin and a fin box thereof, in a fin removal position.

(33) The inner surfaces of the external layers of the tools are shown to be adjacent-to/partially-overlapping the outside surfaces of the shown fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section is shown to be positioned-on/in-contact-with the fin box of the fin, while a top curved fin engagement element is in contact with trailing edge of the fin.

(34) In FIG. 2B, there is shown, a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown, along with a watercraft fin and a fin box thereof, in a fin insertion position.

(35) The inner surfaces of the external layers of the tools are shown to be adjacent-to/partially-overlapping the outside surfaces of the shown fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section is shown to be positioned-on/in-contact-with the fin box of the fin, while a bottom curved fin engagement element is in contact with leading edge of the fin.

(36) According to some embodiments, positioning the wide curved fin box engagement section on the bottom of the watercraft, or a fin box thereof, at a first angle with the bottom of the watercraft, while the inner surfaces of the external layers are adjacent-to/overlap-with/cover at least part of the outer side surfaces of a fin to be insertedmay position a first curved fin engagement element of the internal layer, on the leading edge of the fin.

(37) Applying downward force (in the general direction of the bottom of the watercraft) on the top of the first side of the elongated external layerswhile also applying downward force (in the general direction of the bottom of the watercraft) on the top of the second side of the elongated external layers and thus retaining the position of the wide curved fin box engagement sectionmay cause the first curved fin engagement element of the internal layer to push against the leading edge of the fin, creating backwards and downwards force on the fin while inserting it into its position in the bottom of the watercraft or a fin box integrated thereto.

(38) According to some embodiments, positioning the wide curved fin box engagement section on the bottom of the watercraft, or a fin box thereof, at a second, sharper, angle with the bottom of the watercraft, while the inner surfaces of the external layers are adjacent-to/overlap-with/cover at least part of the outer side surfaces of a fin to be insertedmay position a second curved fin engagement element of the internal layer, on the trailing edge of the fin.

(39) Applying upward force (in the general direction of up and away from the bottom of the watercraft) on the first side of the toolwhile also applying downward force (in the general direction of the bottom of the watercraft) on the top of the second side of the tool and thus retaining the wide curved fin box engagement section in contact with the bottom of the watercraft or fin box thereofmay cause the second curved fin engagement element of the internal layer to push against the trailing edge of the fin, creating forward and upwards force on the fin while removing it from its position in the bottom of the water craft or a fin box integrated thereto.

(40) The elongated shape of the described tool, may accordingly leverage, while increasing the effort of, forces applied onto the first side of the elongated external layers, wherein the wide curved fin box engagement section, on the second, opposite, side of the tool, acts as an axis to the formed lever. The leveraged forces, transformed by the curved fin engagement elements of the internal layer to the fin itself, are utilized by the tool for enabling/improved/easier fin insertion and removal/extraction.

(41) In FIG. 3A, there is shown, a side view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in a fin removal position.

(42) As described in regard to FIG. 2A, the inner surfaces of the external layers of the tool are shown to be adjacent-to/partially-overlapping the outside surfaces of the shown fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section is shown to be positioned-on/in-contact-with the fin box of the fin, while the top curved fin engagement element is in contact with trailing edge of the fin.

(43) Applying upward force on the first, handle side of the tool, in the direction of the upward facing arrow, while simultaneously applying downward force/pressure on the top of the second, fin box engagement section, side of the tool, will cause the tool to turn up and around the leverage point/section/axis on the edge of the wide curved fin box engagement section. The upward force is transferred by the top curved fin engagement element to the trailing edge of the fin, causing its back, trailing edge, side to be withdrawn from the fin box as the tool turns up and around the leverage point/section/axis.

(44) In this example, the fin is shown to have two fin connection teeth structured to fit into, or be withdrawn from, two respective fin box slots, thereby interconnecting/disconnecting between the fin and fin box.

(45) In FIG. 3B, there is shown, a side view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in a fin insertion position.

(46) As described in regard to FIG. 2B, the inner surfaces of the external layers of the tool are shown to be adjacent-to/partially-overlapping the outside surfaces of the shown fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section is shown to be positioned-on/in-contact-with the fin box of the fin, while the bottom curved fin engagement element is in contact with leading edge of the fin.

(47) Applying downward force on the first, handle side of the tool, in the direction of the downward facing arrow, while simultaneously applying downward force/pressure on the top of the second, fin box engagement section, side of the tool, will cause the tool to turn down and around the leverage point/section/axis on the edge of the wide curved fin box engagement section. The downward force is transferred by the bottom curved fin engagement element to the leading edge of the fin, causing its back, trailing edge, side to be inserted into the fin box as the tool turns down and around the leverage point/section/axis.

(48) In this example, the fin is shown to have two fin connection teeth structured to fit into, or be withdrawn from, two respective fin box slots, thereby interconnecting/disconnecting between the fin and fin box.

(49) According to some embodiments, the edges of the curved fin engagement elements of the internal layer, the edge of the wide curved fin box engagement section and/or at least part of the inner facing surfaces of the external layersmay be covered by a non-slip material for better grabbing/holding-onto the inserted/removed fin and/or the bottom of the watercraft or a fin box integrated thereto.

(50) The non-slip material used, in accordance with some embodiments, may be a substantially soft, protective and/or cushioning material, for preventing damageto the watercraft, the fin box, or the fin itselffrom the contact surfaces/areas/lines/points of the fin insertion and removal tool, coming in contact therewith and/or applying forces thereon.

(51) According to some embodiments, the non-slip material may comprise of an elastic substance or material, such as, but not limited to: rubber, natural-rubber/caoutchouc, plastic or polymer, leather, cotton, polyester, epoxy, sponge and/or any other soft, elastic, cushioning or protective material, known today, or to be devised in the future.

(52) According to some embodiments, the non-slip material, or pieces/straps thereof, may be connected to the tool by: glue or adhesive material, pins or clips, channels/holes into which part of the material is molded, adhesive properties of the non-slip material itself and/or any other connection method, known today, or to be devised in the future.

(53) In FIG. 4A, there is shown, a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool includes non-slip covered edges/areas and is shown, along with a watercraft fin and a fin box thereof, in a fin removal position.

(54) The edges of the top curved fin engagement element of the internal layer, the edge of the wide curved fin box engagement section and the inner facing surfaces of the external layersare shown to be covered by a non-slip material for better grabbing/holding-onto the removed fin and/or the fin box.

(55) The non-slip material prevents damageto the watercraft, the fin box, or the fin itselffrom the contact surfaces/areas/lines/points of the fin insertion and removal tool, coming in contact therewith and/or applying forces thereon. The

(56) In FIG. 4B, there is shown, a perspective view diagram of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool includes non-slip covered edges/areas and is shown, along with a watercraft fin and a fin box thereof, in a fin insertion position.

(57) The edges of the bottom curved fin engagement element of the internal layer, the edge of the wide curved fin box engagement section and the inner facing surfaces of the external layersare shown to be covered by a non-slip material for better grabbing/holding-onto the inserted fin and/or the fin box.

(58) The non-slip material prevents damageto the watercraft, the fin box, or the fin itselffrom the contact surfaces/areas/lines/points of the fin insertion and removal tool, coming in contact therewith and/or applying forces thereon.

(59) In FIGS. 5A-5F, there are shown, diagrams of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is shown in: a perspective view (FIG. 5A), a side view (FIG. 5B), a top view (FIG. 5C), a bottom view (FIG. 5D), a back/handle-side view (FIG. 5E) and a front/fin-engagement-side view (FIG. 5F).

(60) In FIG. 5A the tool is shown in a perspective view. The first, handle side, is shown to include finger accommodating curves on its bottom edges and slightly tilted/curved edges on its top edges to form a gripping section for the hand of a user. Further shown is an opening or hole at the tip of the handle for connecting a strap/rope and/or for hanging the device. The handle side, on the outer surfaces of its external layer, includes cavities/indentations/depressions to lower the weight of the tool and/or improve its grip. At the bottom edge of the tool, the internal layer is shown to end forming the fin engagement elements, wherein part of the bottom curved fin engagement element can be seen between the external layers.

(61) The second, fin engagement side, is show to include non-slip material strips running along the edges of the external layers, at the bottom, end, and top of their widening end sections. Part of the non-slip material strips, in this exemplary embodiment, are shown to have jagged/zig-zagged edges to improve their grip and/or cushioning when pressed against the fin box of a fin being removed or inserted.

(62) In FIG. 5B the tool is shown in a side view. The first, handle side, is shown to include finger accommodating curves on its bottom edges and slightly tilted/curved edges on its top edges to form a gripping section for the hand of a user. Further shown is an opening or hole at the tip of the handle for connecting a strap/rope and/or for hanging the device. The handle side, on the outer surfaces of its external layer, includes lower cavities/indentations/depressions to lower the weight of the tool and/or improve its grip.

(63) The second, fin engagement side, is show to include non-slip material strips running along the edges of the external layers, at the bottom, end, and top of their widening end sections. The bottom part, and part of the end part, of the non-slip material strips, in this exemplary embodiment, are shown to have jagged/zig-zagged edges to improve their grip and/or cushioning when pressed against the fin box of a fin being removed or inserted.

(64) In FIG. 5C the tool is shown in a top view. The first, handle side, is shown to include palm accommodating curves on the outer sides/surfaces of the external layers, and slightly tilted/curved edges on its top edges, to form a gripping section for the hand of a user. The space formed between the external layers, to accommodate/accept a fin being removed/inserted, is also indicated, along with the top curved fin engagement elementformed by the internal layerat the starting end of the space, approximately at middle or center of the tool.

(65) In FIG. 5D the tool is shown in a bottom view. The first, handle side, is shown to include palm accommodating curves on the outer sides/surfaces of the external layers, and slightly tilted/curved edges on its bottom edges, to form a gripping section for the hand of a user. The space formed between the external layers, to accommodate/accept a fin being removed/inserted, is also indicated, along with the bottom curved fin engagement elementformed by the internal layerat the starting end of the space, approximately at middle or center of the tool.

(66) Further shown are the non-slip material strips running along the edges of the external layers, at the bottom of their widening end sections. The bottom part of the non-slip material strips, are shown to have jagged/zig-zagged edgesdepicted by the multiple short parallel lines drawn across the edgesto improve their grip and/or cushioning when pressed against the fin box of a fin being removed or inserted.

(67) In FIG. 5E the tool is shown in a back/handle-side view. The tip/ending of the first, handle side, is shown in the figure. On the widening end sections of the edges of the external layers, the handle-facing bottom part of the non-slip material strips are shown to have jagged/zig-zagged edgesdepicted by the multiple short parallel lines drawn across the edgesto improve their grip and/or cushioning when pressed against the fin box of a fin being removed or inserted. The bottom of the space formed between the external layers, to accommodate/accept a fin being removed/inserted, is also indicated.

(68) Further shown, is the upward curving/bulging/protruding of the external layers at the top of the second, fin box engagement side, of the tool, forming a hand support section for a hand of a user to push down the fin box engagement side against the fin box of the fin being removed/inserted.

(69) In FIG. 5F the tool is shown in a front/fin box engagement side view. The tip/ending of the second, fin box engagement side, is shown in the figure. On the widening end sections of the edges of the external layers, the forward-facing bottom part of the non-slip material strips are shown to have jagged/zig-zagged edgesdepicted by the multiple short parallel lines drawn across the edgesto improve their grip and/or cushioning when pressed against the fin box of a fin being removed or inserted. The space formed between the external layers, to accommodate/accept a fin being removed/inserted, is also indicated, wherein both, the bottom curved fin engagement element and the top curved fin engagement elementformed by the internal layerare indicated and can be seen at the starting, far end, of the space.

(70) The internal sides/surfaces of the outer layers, in this exemplary embodiment, are shown to include horizontal channels, which cross-sections are visible in the figure. The channel may lower the weight of the tool, improve the gripping of a fin being removed/inserted and/or facilitate the removal of fluids (e.g. sea water) remaining on the fin after watercraft usage.

(71) Further shown, is the upward curving/bulging/protruding of the external layers at the top of the second, fin box engagement side, of the tool, forming a hand support section for a hand of a user to push down the fin box engagement side against the fin box of a fin being removed/inserted.

(72) In FIGS. 6A-6C, there are shown, perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the removal of a surfboard fin of a first fin connection system.

(73) In FIG. 6A the fin is shown to be positioned within its fin box, while the tool is positioned behind the fin. From this position the tool, held at its handle by the user, may be moved forward and over/onto the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin.

(74) In FIG. 6B the fin is shown to be positioned within its fin box, while the tool is positioned over/on the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section of the tool is shown to be positioned-on/in-contact-with the fin box of the fin, while a top curved fin engagement element is in contact with trailing edge of the fin.

(75) The first, handle side, of the tool is being held by the right hand of the user, while the second, fin box side, of the tool is being pressed down by the left hand of the user.

(76) In FIG. 6C, as a result of the upward force applied by the right hand of the user and transferred to the fin by the top curved fin engagement element, the back, trailing edge side, of the fin is shown to rise and disconnect from the fin box. From this position, further upward force applied by the right hand of the user and the release of the pressing down by the left hand of the user, will cause the entire fin to rise and disconnect from the fin box.

(77) In FIGS. 7A-7C, there are shown, perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the insertion of a surfboard fin of a first fin connection system.

(78) In FIG. 7A the fin is shown to be positioned such that the bottom of the front, leading edge side, of the fin is partially within its fin box, while the bottom of the back, trailing edge side, of the fin is completely out of its fin box. The tool is positioned in front of the fin. From this position the tool, held at its handle by the right hand of the user and at the top of its fin box engagement side by the left hand of the user (hands may swopped/switched, e.g. for a left handed user), may be moved backward and over/onto the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin.

(79) In FIG. 7B the tool is positioned over/on the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section of the tool is shown to be positioned-on/in-contact-with the fin box of the fin, while a bottom curved fin engagement element is in contact with leading edge of the fin.

(80) In FIG. 7C, as a result of downward force applied by the right hand of the user and transferred to the fin by the bottom curved fin engagement elementwhile the second, fin box side, of the tool is being pressed down by the left hand of the userthe back, trailing edge side, of the fin is shown to decline/lower and completely enter the fin box to its designated position/slot.

(81) In FIGS. 8A-8C, there are shown, perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the removal of a surfboard fin of a second fin connection system.

(82) In FIG. 8A the fin is shown to be positioned within its fin box, while the tool is positioned over/on the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section of the tool is shown to be positioned-on/in-contact-with the fin box of the fin, while a bottom curved fin engagement element is in contact with leading edge of the fin.

(83) The first, handle side, of the tool is being held by the right hand of the user, while the second, fin box side, of the tool is being pressed down by the left hand of the user.

(84) In FIG. 8B, as a result of the downward, or downward and backward, force applied by the right hand of the user and transferred to the fin by the bottom curved fin engagement element, the front, leading edge side, of the fin is shown to rise and disconnect from the fin box.

(85) In FIG. 8C, as a result of further downward force applied by the right hand of the user; and the following upward force applied by the right hand of the user and the release of the pressing down by the left hand of the user, the entire fin is shown to rise and disconnect from the fin box.

(86) In FIGS. 9A-9B, there are shown, perspective view diagrams of the operation steps of an exemplary tool for watercraft fin insertion and removal, in accordance with some embodiments of the present invention, wherein the tool is being used for the insertion of a surfboard fin of a second fin connection system.

(87) Initially the fin may be positioned by the user such that the bottom of the back, trailing edge side, of the fin is partially within its fin box, while the bottom of the front, leading edge side, of the fin is completely out of its fin box.

(88) In FIG. 9A the tool is positioned over/on the fin such that the inner surfaces of the external layers of the tool are-adjacent-to/partially-overlap the outside surfaces of the fin. The leverage point/section/axis on the edge of the wide curved fin box engagement section of the tool is shown to be positioned-on/in-contact-with the fin box of the fin, while a top curved fin engagement element is in contact with trailing edge of the fin.

(89) In FIG. 9B, as a result of upward, or upward and forward, force applied by the right hand of the user and transferred to the fin by the top curved fin engagement elementwhile the second, fin box side, of the tool is being pressed down by the left hand of the userthe front, leading edge side, of the fin is shown to decline/lower and completely enter the fin box to its designated position.

(90) According to some embodiments, the fin insertion and removal tool may be produced/fabricated: as separate external layers and an internal layer, connected (e.g. glued, screwed, clipped) to each other; as a single molded unit; as a single unit curved/cut-out from a piece of material (e.g. by a router, by a drill); as a 3-dimensional printed unit or 3-dimensionally printed parts connected to each other; and/or by utilizing any other production/fabrication method or process, known today or to be devised in the future.

(91) According to some embodiments of the present invention, a tool for watercraft fin insertion and removal may include a spacing element(s)for example, in the form of a bolt or a relatively small material layerfor retaining the external layers of the tool at a designated distance between each other. The spacing element may, for example, be positioned at the ending/tip of the second side of the device, on the top edge of the wide curved fin box engagement section or in proximity thereto.

(92) According to some embodiments of the present invention, a tool for watercraft fin insertion and removal may include one or more a spaces/holes/cut-outsfor example, in the first, handle side, of the toolfor decreasing the weight of the tool, for threading a holding/hanging strap or a rope to the tool and/or for saving on the amount of material used for producing the tool.

(93) According to some embodiments of the present invention, a tool for watercraft fin insertion and removal may include: a first external elongated layer; a second external elongated layer, aligned with, and positioned at a substantially parallel plane to the plane of, the first external layer; and an internal layer positioned between, and stretching across a portion of the area of, the first layer and the second layer; wherein, upon positioning the tool such that the inner surface of the first external elongated layer is adjacent to the surface of one side of the watercraft fin and the inner surface of the second external elongated layer is adjacent to the surface of the other side of the watercraft fin, one of two curved fin engagement elements of the internal layer complements at least a portion of the leading edge or the trailing edge of the watercraft fin.

(94) According to some embodiments, the internal layer may stretch across the area of a first of two sides of the tool; and the curved fin engagement elements of the internal layer, may be located along the ending line of the first side.

(95) According to some embodiments, a bottom long edge of the tool, may widen towards the tip of the second side of the tool, to form a wide curved fin box engagement section; such that upon positioning one of the curved fin engagement elements of the internal layer on the leading edge or the trailing edge of the watercraft fin, the edge of the wide curved fin box engagement section comes in contact with the bottom surface of the watercraft or a fin box integrated thereto.

(96) According to some embodiments, at least a section of the first side of the tool may be shaped as a handle, having its bottom long edge, or part thereof, shaped to accommodate the fingers of a user's hand.

(97) According to some embodiments, at least a section of the second side of the tool is shaped as a palm support, having its top long edge, or part thereof, shaped to accommodate the palm of a user.

(98) According to some embodiments, the curved fin engagement elements of the internal layer may include: a first curved fin engagement elementcloser to, and forming a sharp angle with, a top long edge of the toolcomplementing at least a portion of the trailing edge of the watercraft fin; and, a second curved fin engagement elementcloser to, and forming a sharp angle with, a bottom long edge of the toolcomplementing at least a portion of the leading edge of the watercraft fin.

(99) According to some embodiments, at least a portion of the edge, of the wide curved fin box engagement section that comes in contact with the bottom surface of the watercraft or a fin box integrated thereto, may be covered with a non-slip material.

(100) According to some embodiments, the edge of the non-slip material may be jagged.

(101) According to some embodiments, the curved fin engagement elements of the internal layer may be covered with a non-slip material.

(102) According to some embodiments, on the second side of the tool, at least a portion of the inner surface of the first external elongated layer and at least a portion of the inner surface of the second external elongated layer may be covered with a non-slip material.

(103) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layer may be separately formed and may be connected to each other to form the tool.

(104) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layer may be connected to each other by an adhesive material or by screws and bolts.

(105) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layermay be cut from within a sheet or platter of the same material.

(106) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layermay be collectively molded to form the shape of the tool.

(107) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layermay be collectively shaped out of a single block of material by a router to form the shape of the tool.

(108) According to some embodiments, the first external elongated layer, the second external elongated layer and the internal layermay be collectively shaped out by a 3-dimensional printer to form the shape of the tool.

(109) According to some embodiments of the present invention, a method for watercraft fin removal using a fin insertion and removal tool, may include: positioning the inner surfaces of two external layers of the tool adjacent to the outer surfaces of the watercraft fin; positioning a curved fin engagement element of an internal layer of the tool on the trailing edge of the watercraft fin; positioning the edge of a wide curved fin box engagement section of the tool in contact with the bottom surface of the watercraft or a fin box, of the inserted fin, integrated thereto; applying downward force, towards the bottom of the water craft, on the top edge of the wide curved fin box engagement section of the tool; and applying upward force, away from the bottom of the water craft, on the side of the tool, which is opposite to the side of the wide curved fin box engagement sectioncausing the curved fin engagement element of the internal layer to press against and apply upward and forward force on the trailing edge of the fin, thus releasing it from out of the bottom surface of the watercraft or a fin box, of the inserted fin, integrated thereto.

(110) According to some embodiments of the present invention, a method for watercraft fin insertion using a fin insertion and removal tool, may include: positioning the inner surfaces of two external layers of the tool adjacent to the outer surfaces of the watercraft fin; positioning a curved fin engagement element of an internal layer of the tool on the leading edge of the watercraft fin; positioning the edge of a wide curved fin box engagement section of the tool in contact with the bottom surface of the watercraft or a fin box, of the inserted fin, integrated thereto; applying downward force, towards the bottom of the water craft, on the top edge of the wide curved fin box engagement section of the tool; and applying downward force, towards the bottom of the water craft, on the side of the tool, which is opposite to the side of the wide curved fin box engagement sectioncausing the curved fin engagement element of the internal layer to press against and apply downward and backward force on the leading edge of the fin thus inserting it into the bottom surface of the watercraft or a fin box, of the inserted fin, integrated thereto.

(111) The subject matter described above is provided by way of illustration only and should not be constructed as limiting. While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.