| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 441079000 | Having stabilizing surface | 56 |
| 20080207070 | Hydrodynamic Fin - A hydrodynamic fin, such as a keel or a rudder of a watercraft, in particular a sailing craft or surfboard, which fin comprises at least two fin sections ( | 08-28-2008 |
| 20080220672 | RELEASABLE SPRING-LOCKING MECHANISM FOR RAPID WATERCRAFT FIN ATTACHMENT - The present invention provides fin attachment devices and methods based upon the concept of vertical, instead of horizontal, locking forces for fin attachment to watercraft. In some embodiments the spring force is employed as the actual locking mechanism, and insertion and desertion forces are designed into the spring. The spring may be designed so that the insertion force is less than the desertion force. | 09-11-2008 |
| 20080248702 | Towable Recreational Water Board - A recreational water board for towing a person behind a water craft on or below the surface of the water. The board includes a substantially planar structure with a pair of wings on either side of a central axis of symmetry. Each wing has a leading edge and a trailing edge, the leading edge being swept-back to give the board a hydrodynamically contoured profile. The board also includes handgrips to enable the board to be firmly gripped while being towed, and pairs of apertures arranged symmetrically on either side respectively of a central board axis for attaching a tow bridle to the board. The pairs of apertures define a pivot axis, perpendicular to the central axis, about which the board may be tilted to enable the user to dive or resurface in the water, depending on the direction of tilt. | 10-09-2008 |
| 20080261470 | Fin or Keel with Flexible Portion for Surfboards, Sailboards of the Like - Keel or fin ( | 10-23-2008 |
| 20080268730 | Fin Unit with Elastic Attachment System on an Underside of a Marine Apparatus - The invention relates to a fin unit ( | 10-30-2008 |
| 20080305698 | TOWED PERSONAL WATERCRAFT - A towed personal watercraft apparatus includes a submergible unit and a platform. The submergible unit comprises at least two independent vertical stabilizers and one or more hydrofoil units mounted to at least one of the vertical stabilizers. One or more of the hydrofoil units is pivotally attached to the vertical stabilizers. Pivotal attachment can include a torsion spring or roller bearing to allow the hydrofoil units to pivot or rotate about the pitch axis of the platform, thereby improving stability of the towed personal watercraft. Rotation of the hydrofoil units can be limited for functional concerns and performance. For example, rotation of the hydrofoils about the pivot can be allowed in a first direction to prevent a nose dive, while being restricted in a second direction to facilitate a launch of the watercraft out of the water. The platform includes a user mount, such as foot holds or equivalents. | 12-11-2008 |
| 20080311807 | MODULAR FIN FOR A SURFBOARD, SAILBOARD OR OTHER WATER-BORNE DEVICE - A fin in one embodiment includes a fin box assembly including a fin box adapted for coupling to a body portion of a water-borne device, and a fin assembly having a base member that is releasably engagable in said fin box. A fin assembly according to one embodiment includes a base member adapted for releasable engagement in a fin box that is coupled to a water-borne device, and a fin member coupled to said base member. A water-borne device in one embodiment includes a body portion, and a fin box assembly coupled to the body portion, the fin box assembly including a fin box adapted for receiving a fin assembly having a base member that is releasably engagable in said fin box. | 12-18-2008 |
| 20090029610 | Surfboard horizontal fin - 1. The Horizontal Fin is a marine vessel mechanism. It manufactures propulsion without the use of an engine, moving parts, or fuel. This assistance reduces human paddling labor. | 01-29-2009 |
| 20090253319 | Floating hydrodynamic fin system - Floating hydrodynamic fin system, useful for surfboard and windsurf, modifying its fin lift trim by a calibrate and controlled spring and an asymmetric shape of the fin-base that leaves a gap between said fin-base and the fin-box, allows the floating of the system rearward and/or forward. This happens by:
| 10-08-2009 |
| 20090258553 | Thick, elliptical-planform fin for a water sports board - A thick, elliptical-planform fin for use on a water sport board such as a surfboard. One set of attributes of the fins according to the present invention is the use of a substantially thick cross-section which, at its maximum thickness, overhangs the receiver slot, typically a 12 to 15 percent thickness ratio, with a maximum thickness at 30 percent of chord length, a blunter leading edge, and a short elliptical planform of constant relative dimension cross-section along its length. | 10-15-2009 |
| 20100068956 | ACCESSORY DEVICE FOR ENLARGING THE AREA OF THE FIN OF A SURFBOARD OR SIMILAR WATER CRAFT - A device that can be attached to a fin of a suf board or similar water craft. The device contains an opening ( | 03-18-2010 |
| 20100087111 | Surfboard fins and surfboard using same - A fin for a surfboard or other waterboard with an angled winglet on the tip of the fin. The fin may be angled from the bottom of the board. A pair of fins with mirror image shapes on a surfboard with winglets on the tips of the fins angled outward away from the center of the board. | 04-08-2010 |
| 20100120305 | AUTO-FASTENING REMOVABLE FIN SYSTEM - The auto-fastening skeg system comprises a skeg receiver and a skeg. The skeg has a male component that cooperates with a cavity of the skeg receiver. The cavity has front and rear ends, a spring disposed at said front end and at least one dowel disposed between the front and rear ends. The male component includes a front tip and at least one locking wedge, said locking wedge corresponds in number to the number of dowels. When the male component is set in the cavity and the locking wedge is aligned with the dowel of the receiver, the spring pushes the front tip of the male component against the rear wall of the cavity of the receiver and the locking wedge against the dowel providing a locking mechanism that holds the skeg to the receiver. | 05-13-2010 |
| 20100136860 | FIN ASSEMBLY - A fin assembly including a fin having a base portion, the base portion having at least one extension portion extending from the base portion, at least one extension portion mounting at least one engagement portion, at least one socket mount for substantially permanent inclusion in a watercraft to which the fin is to be mounted, the socket mounting having at least one opening corresponding with and complementary to the extension portion and engagement portion on the fin so that the at least one extension portion and engagement portion can be received in the respective openings; and a securing means for releasably securing the fin relative to the socket mount. | 06-03-2010 |
| 20100136861 | TUBE RAIL WATERBOARD - A waterboard includes channels of continuously variable depth and angle. | 06-03-2010 |
| 20100144223 | Surfboard metal "V" fin aly V fin - A surfboard metal fin arrangement; said fin arrangement including two metal fin elements extending from proximate an underside of said surfboard; said two metal fin elements arranged in an inverted “V” formation; metal forming each of said two fin elements having a thickness of between 1.0 and 3.5 mm. | 06-10-2010 |
| 20100151754 | Water recreation device - A water recreation device and method of use is contemplated having advantages such as improved stability, maneuverability and ease of use. Embodiments of the contemplated water recreation device include a riding board, handles and a tow hook assembly that are configured to allow a rider to more easily transition to a standing forward-facing position while riding the device. The contemplated device may also include foot bindings or foot grips for added ride stability. The device may alternately include rails disposed on the bottom surface of the riding board. Such rails are adapted to channel water toward the rear bottom section of the riding board to cause the device to achieve an approximately planar orientation relative to the surface of a body of water. This planar orientation provides positioning and stability that further improves the ease of transitioning to a standing position. | 06-17-2010 |
| 20100159759 | Shark fin - A shark fin comprising a specially designed, glue-on modification to foam surfboards and foam body boards that encompasses an attachable, directional skeg or fin is provided. | 06-24-2010 |
| 20100178820 | FIN ATTACHMENT STRUCTURE AND FIN - To provide a fin attachment structure capable of attaching a fin detachably and easily on a board without using any tools, and particularly, to a fin attachment structure capable of reducing the damage to human body as much as possible when the fin comes into contact with the human body during surfing etc. and having an extremely high safety, and a fin. | 07-15-2010 |
| 20100233921 | FIN ATTACHMENT STRUCTURE - To provide a fin attachment structure capable of facilitating the attachment/detachment of a fin and also of making the attachment of the fin robust, wherein if the fin comes into contact with human body from behind during surfing, the impact of the fin can be eliminated to restrict the damage to the human body to an extreme minimum and thus safety is improved. | 09-16-2010 |
| 20100273373 | FIN RETENTION SYSTEM FOR A WATER CRAFT - A fin box for a water craft including: a fin box body having an elongated slot open at a first surface of the fix box and extending to a closed base of the fin box; a peripheral flange extending outwardly from the slot and defining an area of the first surface around the slot; the peripheral flange having a second lower surface and a third upper surface both offset vertically from the first surface and extending laterally from the fin box body, the second lower surface and said third upper surface further comprising a left and right side, each said left and right side surfaces extending transversely from the body portion to peripheral extremities of said peripheral flange, wherein at least one surface of said peripheral flange forms a transverse angle of taper with an axial median vertical plane of the fin box body. | 10-28-2010 |
| 20100279563 | Magnetic Fin Attachment System - Herein is disclosed a magnetic clamping system for attaching removable stabilizing fins or similar devices to any type of watercraft such as surfboards, wind-surfer craft, rowing sculls, water skis, sailboards and the like. | 11-04-2010 |
| 20100311294 | PIVOTAL SURFBOARD FIN ASSEMBLY - A pivotal surfboard fin assembly for use on a surfboard, the assembly comprising: an insert bracket having a board face mountable to the bottom surface of the surfboard and a bracket face with a lock pin aperture and a flex plug cavity; an elastomeric flex plug having a flex plug hole, a first flex plug surface, and a second flex plug surface, the flex plug disposed in the flex plug cavity; a surfboard fin having a fin blade, a mounting edge, a flex pin channel, a fixed lock pin mountable to the surfboard fin and disposable into the lock pin aperture, a biased flex pin slidably disposable into the flex pin channel and the flex plug hole; and a first compression pin and a second compression pin engaged with the insert bracket and operative to laterally compress the flex plug. | 12-09-2010 |
| 20100323568 | Foldable Watercraft Fin - Foldable or collapsible watercraft fins are described. Preferred examples of such fins are foldable surfboard, paddleboard, and kayak fins, one or more of which can be attached to a surfboard, paddleboard, or kayak. | 12-23-2010 |
| 20110028058 | FIN - An object of the present invention is to provide fin in which the fin can be easily attached or detached to a board, its attached state can be maintained well, and the fin readily comes off in an emergency such as when the fin is brought into contact with human body. | 02-03-2011 |
| 20110039463 | FIN BOX - 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. | 02-17-2011 |
| 20110039464 | System for Placement of Surfboard Fin Attachment for Multiple Foot Sizes - Apparatuses and methods are provided for achieving a surfboard design that accommodates multiple foot sizes of board riders. In one embodiment, the surfboard may include a first multi-fin plug securely mounted to a bottom surface at a first lateral distance from the centerline, wherein the first multi-fin plug comprises a first plurality of fin base slots to accommodate multiple lateral positions for a first fin. The surfboard may include a second multi-fin plug securely mounted to the bottom surface in the tail region at a second lateral distance from the centerline, wherein the second multi-fin plug is on an opposite side of the centerline and comprises a second plurality of fin base slots to accommodate multiple lateral positions for a second fin. | 02-17-2011 |
| 20110053442 | Water board - The water board includes a substantially planar board forming a pair of bat shaped wings adapted to be towed by a water vehicle. A pair of upstanding handles is disposed on the top surface of the planar board, which the user may grasp for towing the user and maneuvering the board. A pair of fins depends from the bottom surface of the planar board to stabilize and control maneuvering of the water board both above and below the water. A towing bracket with a towing ring is secured to the top surface of the planar board so that the board may be connected to the water vehicle via a towline. | 03-03-2011 |
| 20110053443 | System for Fin Placement on Surfboards - Apparatuses and methods are provided for achieving a surfboard design that allows the user to execute turning maneuvers and maintain control while keeping the user's foot in the tail region of the surfboard stationary. In one embodiment, the deck supports the foot, which transfers a downward pressure at a first pressure point. A first fulcrum of balance may be located between a centerline of the surfboard and the first pressure point, such that the user is able to apply the downward pressure to a fin-ward side of the first fulcrum of balance, and thereby turn the board without having to adjust the foot position. | 03-03-2011 |
| 20110070787 | FIN SYSTEM - The invention relates to a connection between a fin (skeg) or daggerboard for a vessel and a vessel, in particular a sailboard or aquafoil, such as a kite board, windsurfing board, surf board, body board, wake board or water ski, which sailboard is provided with a fin box, whereby the fin box is provided with first fastening means, and whereby the fin is provided with second fastening means that co-operate with the first fastening means of the fin box upon engagement therewith. The first fastening means and the second fastening means are embodied such that they form a releasable cantilever snap fit upon engagement with each other. The snap fit is releasable. | 03-24-2011 |
| 20110171862 | PIVOTING FIN WITH SECUREMENT - 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. | 07-14-2011 |
| 20120028523 | Fin Assembly For Water Sports Board - A water sports board, such as a surf board, is described which has a rider operated center fin that is rotatably mounted on the lower side of the board which aids in steering the board. The central fin is rotatably moved by a center fin assembly that includes a driving mechanism such as a tiller or arm secured to a rotatable shaft passing through the board that is secured to the rotatable central fin. The rider uses his or her rear foot to apply a force to the tiller or arm which moves the tiller and in turn moves the center fin so as to steer the board. | 02-02-2012 |
| 20120071048 | PIVOTAL SURFBOARD FIN ASSEMBLY - A pivotal surfboard fin assembly for use on a surfboard, the assembly comprising: an insert bracket having a board face mountable to the bottom surface of the surfboard and a bracket face with a lock pin aperture and a flex plug cavity; an elastomeric flex plug having a flex plug hole, a first flex plug surface, and a second flex plug surface, the flex plug disposed in the flex plug cavity; a surfboard fin having a fin blade, a mounting edge, a flex pin channel, a fixed lock pin mountable to the surfboard fin and disposable into the lock pin aperture, a biased flex pin slidably disposable into the flex pin channel and the flex plug hole; and a first compression pin and a second compression pin engaged with the insert bracket and operative to laterally compress the flex plug. | 03-22-2012 |
| 20120100767 | FIN DEVICES - A fin module ( | 04-26-2012 |
| 20120122357 | PADDLEBOARD - In one example, a paddleboard includes a body defining a fin housing within which a fin is partially received. The fin is configured to reside in the fin housing in either of a first operating position or a second operating position, where the second operating position is different from the first operating position. Finally, a fin retention element is provided that is configured to releasably secure the fin to the body. | 05-17-2012 |
| 20120208415 | INTEGRAL FOILS FOR SURF CRAFT FINS - An integral foil for a surf craft fin comprising: a base portion extending in generally planar fashion between a base edge and a transitional edge spaced from the base edge; a foil portion extending in a generally planar fashion at an angle to the base portion from the transitional edge of the base portion to an intermediate edge spaced from the transitional edge; a tip portion extending in a generally planar fashion substantially parallel to the base portion from the intermediate edge of the foil portion; fastening means for fastening the surf craft fin to a surf craft having a floating plane; and wherein the base portion, foil portion and tip portion are of an integral and coextensive form. | 08-16-2012 |
| 20130012084 | Adjustable Fin System - An adjustable fin system comprising: a plug assembly, the plug assembly comprising: a plug housing, the plug housing comprising: a closed end; open end; a plug first set-screw hole; a plug second set-screw hole; a cylinder configured to be rotatable within the plug housing, and installable into the plug housing via the open end, the cylinder comprising: a cylinder first set screw hole; a cylinder second set screw hole; a cap configured to generally close the open end of the plug housing and to restrain the cylinder from leaving the plug housing; a fin removably attachable to the cylinder; where when the plug first set-screw hole is aligned with the cylinder first set screw hole, the fin is at a first fin cant; where when the plug second set-screw hole is aligned with the cylinder second set screw hole, the fin is at a second fin cant. | 01-10-2013 |
| 20130017743 | PADDLEBOARD - In one example, a board suitable for use in water sports includes a body that includes an upper surface and a lower surface. The board also includes a retractable fin connected to the body and configured to assume extended and retracted positions. In the extended position, a substantial portion of the retractable fin extends below the lower surface of the body, and in the retracted position, a substantial portion of the retractable fin resides within a recess at least partly defined by the body. | 01-17-2013 |
| 20130052895 | Water sporting device having retractable fins - A water sport flotation device having an upper surface directed toward a user, an opposing bottom surface directed toward the water, and a pair of stabilizing fins, each fin having a top portion and a bottom edge. The flotation device further including a plurality of longitudinally disposed through slots in the upper surface and bottom surface, each slot partially surrounding each fin, and a flexible, resilient biasing means attached to the top portion of each fin and affixed to the upper surface so that the biasing means applies a downward force on each fin. The biasing means allows the bottom edge of the fin to retract through the slot and parallel to the bottom surface, if necessary, if the flotation device encounters an object in the water. | 02-28-2013 |
| 20130102212 | AXIALLY STABILIZING APPARATUS - An axially stabilizing apparatus, adapted for stabilizing a water sport board along an axis of rotation is disclosed. The axially stabilizing apparatus generally comprises a port side stabilizing member, at least one port side affixing element for affixing the port side stabilizing member to the water sport board, a starboard side stabilizing member, at least one starboard side affixing element for affixing the starboard side stabilizing member to the water sport board. | 04-25-2013 |
| 20130178123 | FIN - An improved fin assembly | 07-11-2013 |
| 20130189886 | Fin And Accessory Assembly And Watercraft Having Same - A fin assembly includes a fin, a mounting base and a socket base. The mounting base is provided for permanent inclusion within a watercraft. The mounting base defines a cavity that is adapted for receiving the socket base. The socket base further includes a cavity adapted for receiving the fin. The socket base is further adapted for receiving an accessory. | 07-25-2013 |
| 20130237107 | ADJUSTABLE FIN SYSTEM FOR SURFBOARDS - A fin system for a surfboard includes a fin box and a fin having a base, wherein the base is slidably engaged to the fin box. A surfboard comprises a fin attached to a bottom of the surfboard through a slot formed from a fin box, and a dial coupled to a base of the fin so that rotation of the dial causes movement of the fin from a distal position toward a read end of the surfboard to a proximal position toward a front end of the surfboard. | 09-12-2013 |
| 20130244514 | FIN FOR SURF CRAFT | 09-19-2013 |
| 20130303040 | SURFCRAFT FIN ASSEMBLY - A surfcraft fin assembly includes a generally rectangular open mounting box recessed into the underside of surfcraft and having lugs projecting internally at the front and rear of its open edge to retain a notch in the leading edge of the base of the fin and a flexible hook in the rear edge of the base of the fin which flexes allowing insertion into and removal from the mounting box. | 11-14-2013 |
| 20140080371 | Surfboard Fin for Generating Surfboard Lift and Method of Use - The present invention relates to a lifted fin apparatus comprising one or more lifted fin elements with foiled tin components for a reduction of pressure and drag and an increase in surfboard lift as well as a method of achieving surfboard lift through, the use of said apparatus. Generally, the lifted fin apparatus comprises two or more lifted fin elements exhibiting a foil design on one or more of the fin surfaces. The individual fin elements may comprise a substantially vertical fin attached to a first edge of a base member and oriented at a substantially 90° angle in relation to the bottom surface of the surfboard or to the first edge of the base member. The fin elements may further comprise an angular fin mounted to a second edge of the base member at one end and the lower portion of the first, fin at the other end. In said embodiment, a bend or elbow is formed between a first fin component of angular fin and base member proximate the point of attachment at second edge of base member. Alternatively, the base member may not have a defined second edge representing the intersection between base member and a first fin component of angular fin, but rather the base member and the angular fin may be manufactured as a unitary structure with a bend or elbow between base member and a first fin component as described below. | 03-20-2014 |
| 20140094074 | LOW-DRAG FIN AND FOIL SYSTEM FOR SURFBOARDS - The present invention is a Low-Drag Fin and Foil System for Surfboards ( | 04-03-2014 |
| 20140134902 | BODY SURFING SUIT - Apparatus and methods for body surfing which provide the body surfer a means to stabilize his ride and control his direction/position on a wave are described herein. According to one aspect, a body surfing apparatus includes a body suit having a torso, arms, and legs; a plurality of fins located on the torso; a plurality of fins located on the arms; and one or more fins located laterally on the legs. The fins are preferably attached to the body suit via an adhesive or mechanical means and the fins and suit may include a buoyant layer. In one embodiment, the body surfing apparatus includes a body suit with multiple segmentations and/or fins with multiple sliced cuts. | 05-15-2014 |
| 20150017850 | Universal Hydrofoil Connector System and Method of Attachment - A universal hydrofoil comprises a hydrofoil assembly, a universal mount assembly and a plurality of lateral connectors. The hydrofoil assembly has a longitudinal axis and includes a centerfoil having first and second longitudinal ends. A foil assembly is disposed at the centerfoil second end and includes a fuselage, a wing at a fuselage first end and a tail at a fuselage second end. The universal mount assembly comprises a base having first and second mounting surfaces. The second mounting surface defines a mounting interface configured to reversibly mate with the centerfoil first end. A plurality of lateral supports each has a pair of arms projecting from a central beam selectively engageable with the base. The lateral connectors are adjustably secured within the lateral channel and configured to engage a structural feature of a craft. | 01-15-2015 |
| 20150031254 | QUICK DETACHABLE FIN HOLD SYSTEM - A quick detachable fin hold system for quickly removing and changing the fins on kiteboards and wakeboards or the like. Operated by activating a lever that presses against the board surface or another surface attached to the board and pulls against the clip body and the pins attached to the fin. This action positively tightens the fin to the board. To remove simply lift the lever to loosen the assembly, slide the clip body along the slots and the pins pull out of the hole on the clip body and through the holes in the board. | 01-29-2015 |
| 20150044921 | LOW-DRAG FIN AND FOIL SYSTEM FOR SURFBOARDS - The present invention is a Low-Drag Fin and Foil System for Surfboards ( | 02-12-2015 |
| 20150104988 | Watercraft Fin - In one aspect, the present invention provides a watercraft fin including a first side surface and a second side surface wherein at least one of the first side surface or the second side surface includes a plurality of dimples. | 04-16-2015 |
| 20160129743 | Amphibious Board - The purpose of this invention; herein the Amphibious Board; is to allow a person to transition from a body of water to land & vice versa. The method attributable to provide enough energy is derived from a person or rider, holding a controllable kite utilizing the power of the wind. Once standing in the foot the bindings, the rider would be able to steer the Amphibious Board with the aid of the fins located on the bottom of the board in the water; and the rollers would allow the rider to access the land. | 05-12-2016 |
| 20160144933 | DETACHABLE FINS AND FIN ASSEMBLIES FOR WATERSPORT BOARDS - Tool-less detachable fins and fin assemblies for watersport boards (e.g, surfboards, wake boards, windsurfing boards, kite boards, stand-up paddle boards and the like) are disclosed. Some embodiments are directed toward detachable fin assemblies which include a fin having a mounting tang defining at least one detent recess in an edge thereof, and a fin box defining an elongate mounting channel for receiving the mounting tang of the fin. The fin box includes at least one spring-biased ball detent assembly having a ball detent positioned so as to engage the at least one detent recess when the mounting tang is positioned within the mounting channel to thereby removably fix the fin to the fin box. The fin box may include at least one threaded aperture for receiving a ball detent assembly therein. | 05-26-2016 |
| 20160375968 | SECURING MECHANISM FOR WATER CRAFT FIN - A securing arrangement for securing a water craft fin to a water craft having a fin plug, the fin plug having a first open cavity configured to receive a base portion ( | 12-29-2016 |
| 20180022428 | Surfboard Fins and Related Components | 01-25-2018 |
