Abstract: The invention relates to a device for adjusting the attachment points of a harness line (2) on a boom (1) for a sail-board or the like. It is in particular remarkable in that it includes a carriage (3) that is mounted sliding inside or outside the boom (1) or in an attached part. The harness line (2) passes through the passage orifices of the carriage (6a-6b) in order to form a loop (4), which allows the user to hang by his harness. The carriage (3) can be locked by an appropriate system. This device makes it possible to correct the position of the loop (4) easily during operation of the sail-board in the water by unlocking the carriage, sliding it and locking it in a new position. The length of the loop (4) can be adjusted by shortening or lengthening the harness line (2) with a clam cleat.

Abstract: A mast for a rig for a surfboard is characterized among others by the following features: a mast with a profiled cross-section in the longitudinal direction, said cross-section being formed transversely to the mast longitudinal direction and deviating from a circular shape; the profiled cross-section has the shape of a droplet or has a droplet-like design in the manner of a droplet profile; the mast has a fork tree head securing section which can be rotated or pivoted about the fork tree head securing section; the fork tree head securing section is provided with a cross-section which deviates from the droplet profile; and the mast lower part and the mast upper part of the mast consist of plastic or comprise plastic optionally with the addition of a reinforcement consisting of metal, glass fibers, and/or carbon fibers.

Abstract: A shaft mount sail device that may have a sail made of a lightweight, flexible material that is capable of being tightly wound about the shaft of a paddle, push-pole or other shaft, a mechanism for attaching the sail to the shaft, and a clamping member coupled to the sail and configured to releasably clamp onto the shaft. The sail may be rolled tightly about the shaft and the clamping member fit over the shaft to secure the sail in the stowed position. The clamping member in the stowed position may serve as the handle by which a user grasps and operates the shaft. Various embodiments are disclosed.

Abstract: This invention provides for a new design of recreational water boards that are significantly more stable than traditional boards in the class of standup paddle boards, windsurfing boards, and surf boards. Higher stability is achieved by shifting the primary buoyancy of the board to the “rail hulls” located on each side of the board deck creating a tunnel-hull effect. This provides a unique ability to make the board more stable for the average or beginner rider. This new design is intended to be a multipurpose platform allowing the rider to use as a standup paddle board, windsurf board, and surf board. In addition because the design is very stable it can be configured with a removable seat to allow the rider to paddle while seated. The increased stability provided by the tunnel hull effect also eliminates the need for a fixed rudder or fin to generate directional stability.

Abstract: Dynamic foot repositioning systems for a gliding board including a platform, having a top surface and a bottom surface, the platform including a foot receptacle disposed on the top surface of the platform, and a tether coupled to the platform with a distal end protruding from the bottom surface of the platform. The systems further include a guide track configured to slidably receive the distal end of the tether, the guide track defining a motion path over which the platform slides freely in response to forces applied by a user's foot while the gliding board is traversing a supporting surface. Related gliding board assemblies and methods for repositioning a user's feet are also described.

Abstract: A paddle for stand-up paddle boards includes a paddle blade at a lower end of the paddle shaft and a sail assembly slidingly stowed within the shaft, with the sail deployed by sliding the sail assembly distally out of the shaft upper end. The sail assembly may include a sail and support frame. A method and system for transporting a user across water or other surfaces has a board for the user to stand upon and a paddle with sail slidingly deployed from inside a paddle shaft via an opening in the upper end. To propel via paddling, the user leaves the sail stowed within the shaft. The propel via wind, the user deploys the sail out of the shaft, places the blade onto the board upper surface, and angles the paddle and sail to catch the wind and propel the user across the water.

Abstract: A stunt kite is attached to three lines that are attached to a single handle. Moving the handle will change the angle of the kite by pulling on the desired line or lines. By changing the angle of the kite, the user can direct the wind that is pushing on its sail, causing the kite to go off on a different direction. By doing this, the user is able to perform controlled aerial, ground, underwater and partially submerged stunts.

Abstract: Dynamic foot repositioning systems for a gliding board including a platform, having a top surface and a bottom surface, the platform including a foot receptacle disposed on the top surface of the platform, and a tether coupled to the platform with a distal end protruding from the bottom surface of the platform. The systems further include a guide track configured to slidably receive the distal end of the tether, the guide track defining a motion path over which the platform slides freely in response to forces applied by a user's foot while the gliding board is traversing a supporting surface. Related gliding board assemblies and methods for repositioning a user's feet are also described.

Abstract: A watercraft comprising a main body having hull, a bow end and an opposite stern send, a starboard, a port and a deck. A plurality of watercraft articles are removably mountable to the main body and provide for transforming the watercraft into a variety of watercraft types. The main body comprises a watercraft article-receiving assembly for stowing the watercraft articles therein. Thus providing a transformable, multi-functional and self-stowage watercraft. These watercraft types include a kayak, a paddle boat, a sailboat, a catamaran, a trimaran, a motorboat, a sit-in/on windsurfer/sailboard and any combinations thereof. A removable trailer assembly for the land-transport of a watercraft is also provided. A rudder control assembly for a watercraft having a rudder is also disclosed.

Abstract: The present invention relates to a twin sailing board characterized in including a pair of surfboards (10, 12) adjacently disposed in a lateral direction, plate-like bodies (14, 16, 18) detachably secured to the surfboards (10, 12) by a screw (26), which is screwed with a mast end securing screw (MT) being movable in front and end directions of the surfboards (10, 12) within grooves (10d, 12d) provided on respective top surfaces of the pair of the surfboards (10, 12), a rig (24) including at least a mast (24c), which is connected to assume any inclined attitude by an engaging portion (30) fixed at substantially center of the plate-like bodies (14, 16, 18), a sail (24a) being set up on the mast (24c), and a boom (24b) circularly provided on the mast (24c) in such a manner that the sail (24a) is placed inbetween, and a rod-shaped member (20) erected on the plate-like bodies (14, 16, 18) at the further front side than the mast (24c) and whose leading edge is provided with a first ring member (20a).

Abstract: An aerodynamic lift enhancing gate valve assembly comprising an airfoil blade disposed at a leading edge of a sail, forming a gate between the trailing edge of the airfoil blade and the leading edge of the sail. The airfoil blade captures wind and redirects it over the cambered surface of the sail to enhance the aerodynamic lift of the sail. The pressure of the wind captured by the airfoil blade is regulated by springs or elastic bands. In operation, the chord of the airfoil blade remains substantially parallel to the chord of the sail.

Abstract: The invention is directed to a molded foam sports board made by steps: molding a foam core having a molded contour surface; laminating an extruded adhesive resin layer to a polyolefin foam sheet layer forming a film foam laminate; and thermoforming and heat laminating the film foam laminate to the molded foam core by pressing the molded foam core towards the film side of the film foam laminate and mating against the profile of a thermoforming bottom die surface. The board has a thermoformed polyolefin foam skin having an outer surface and an inner surface, a molded foam core having a molded contour surface, an extruded adhesive resin layer bonding the inner surface of polyolefin foam skin layer to the molded contour surface of the molded foam core. The molded foam core may comprise homopolymer or copolymer of expanded polystyrene foam, expanded polyethylene foam, expanded polypropylene foam and polyurethane foam.

Abstract: An improved windsurfing catamaran type vessel. The illustrated vessel has an improved steering mechanism that includes a relatively stiff but bendable plastic rod that is directly received within one or more guiding passageways or grooves formed in the plastic hull of the vessel. The plastic-to-plastic interface between rod and groove provides relatively low friction interengagement as the rod moves. The groove is open to ambient water, which will further reduce the friction. The rod has stiffness/flexibility characteristics that allow it to turn around relatively large radii while still being able to span relatively short distances without significant bending. A manual operative control member is pivotally mounted on the hull and connected to the rod in a manner which multiplies the force applied by the use; this provides the magnitude of force needed to move the rod with minimum exertion by the user.

Abstract: An aerodynamic lift enhancement gate valve including a valve blade shaped as an airfoil or as a sail and is disposed at the leading edge of an airfoil. Or as a sail, in such a way as to form a fluid gate formed between the trailing edge (at the chord) of the gate valve blade, and the leading edge (nose) of the airfoil or sail, (at the chord). The gate valve blade catches the wind, and will cause a wind velocity surface pressure to build against the upwind surface of the gate valve blade, which pressure is regulated by springs and or elastic. When in operation, the chord of the gate valve blade will remain substantially parallel to the chord of the airfoil, or sail. The air particles at the upwind side of the fluid gate are under pressure, which pressure will overhaul the progressive springs and or elastic tension, and cause the air particles to escape through the fluid gate, to accelerate as they break free from the trailing edge of the gate valve blade.

Abstract: The present invention discloses a seat board for board kiting that is made of a substantially high durability of material, having a seating recess thereon, thereby permitting a rider to enjoy the board kiting in a convenient way. The seat board for board kiting that has a seating recess formed at an upper central portion thereof, is in a shape of a generally small boat and has a kite fixed thereto to thereby obtain a propelling force, the seat board including: a body made of a polystyrene foam material; a resin layer made of fiber glass and formed on the external surface of the body for preventing the damage caused upon collision of the body against an external object; and kite fixing means provided slidably in the seating recess for fixing the kite.

Abstract: A mounting system for a boom (14) of a landsailer (1) includes a resilient flexible member (12), at one end engageable with a rearward portion of the landsailer frame (2) and at the other end with the main sheet (13). A steering mechanism includes a shaft (6) which extends through an aperture (5a) in the mast (3) or mast receptacle (3a) and an aperture (5b) in the frame (2). A wheel (8) is connected to one end of the shaft (6) and the driver operates the other end of the shaft (6). The frame (2) includes a cockpit section (20), mast receptacle (3a), saddle frame (10) and steering section (21) each engageable to form the landsailer frame (2). The dimensions of each part of the mast receptacle (3a), saddle frame (10) and steering section (21) are equal or smaller than the dimensions of the cockpit section (20). The sail (4) includes a pocket (17) to receive the boom (14), and a lower sail portion (4a) extending below the pocket (17).

Abstract: A multi-functional sailboard includes a body having a seating section and a dagger. A mast section is connected to the bow of the body and is movable between raised and lowered positions. The mast section includes a stationary mast and a movable mast. The two may be coupled together and slide along a substantially vertical path. The mast section is maintained by a halyard tied to a cleat and a hook and loop fastener is attached to the sail that secures it to the movable mast. A back rest extends upward from the body. A sculling section is secured to the body and includes a traveler, an eye clip, and a cord connected to the eye clip and rudder. The sculling section also includes a spring connected to the rudder and back rest. The rudder returns to an equilibrium position when moved from side-to-side.

Abstract: A mastless sail for use in a two-seat kayak is disclosed. The apparatus is designed with a boomstick feature for supporting and controlling the bottom of the sail. The existing kayak paddles support and control the top of the sail. The apparatus is also designed for fast assembly and disassembly. No alterations to the kayak are necessary.

Abstract: A device installed in the vent hole of a windsurfing board to warn the user that the vent plug is not installed, and the board should not be placed in the water. Additionally, the device has a container for holding the vent plug when it is not installed in the board, thus preventing loss or misplacement of the plug. Also, the device contains a tool for installing and removing the vent plug before and after the use of the invention, thus making it very convenient to use the invention.

Abstract: A device installed in the vent hole of a windsurfing board to warn the user that the vent plug is not installed, and the board should not be placed in the water. Additionally, the device has a container for holding the vent plug when it is not installed in the board, thus preventing loss or misplacement of the plug. Also, the device contains a tool for installing and removing the vent plug before and after the use of the invention, thus making it very convenient to use the invention.

Abstract: A line system for steering a kite is described, which achieves the five elementary functions for steering a kite (steering to the right, steering to the left, safety function, rearward flight/start-up and depowering) with only three lines.

Abstract: A windsurfing board formed by a base that slides over the water and having a folding joint, with a mast, a sail and a boom with two lateral branches, some facing compartments with cover for concealed wheels, and another compartment with a watertight cover for documentation. The base has a rudder and/or lower wing with a moveable part activated by turning grips located on the boom. There are also some rollers for the two cables holding the harness of the windsurfer and some floats. On the lower edge of the sail is attached an addition whose lower edge is fixed to a support that turns with the foot of the mast. The mast has some limiting stops in its downward movement and is formed in three removable parts. The sail has some cross-pieces for stretching its free edge.