Matches 1 - 50 out of 125 1 2 3 >


Match Document Document Title
8739720 Storable, sickle-shaped sailboat mast  
A sailboat mast including a straight lower portion and a curved upper portion. The curved upper portion has an aerodynamically efficient cross section designed to reduce drag. The mast assembly is...
8635965 Sail system  
A sail system comprising a substantially isosceles-triangle-shaped sail with two booms and an arc-shaped element. The two booms are arranged along substantially equal sides of the sail and...
8166898 Wind-powered personal hydrofoil watercraft  
A personal wind-powered hydrofoil watercraft having a sail supported by a mast coupled to a buoyant body, where the mast is tiltable forward and backward but not side to side, in order to prevent...
7614356 Foldable mast assembly for a sailing vessel  
As one non-limiting example, a foldable mast assembly for a sailing vessel is provided. The foldable mast assembly includes a lower mast section; an intermediate mast section having a lower end...
7458328 Hinge mechanism  
A hinge mechanism comprises first and second chock plates and an adjustable shaft. Each of the chock plates includes an aperture in the form of a figure of eight, the first and second circular...
7137346 Locking hinge for unstayed mast deployment  
Stepping and un-stepping of a sailboat mast, of the un-stayed type that is supported only by a receptacle configured in the sailboat structure, are facilitated by a hinged core that is easily...
6990916 Sailboat mast stepping system  
A sailboat mast stepping system for efficiently using mechanical aids to raise or lower the mast of a sailboat. The sailboat mast stepping system includes a base, a support member substantially...
6923131 Windsurfing catamaran with dynamic shock dampened rig centering keel and hull support  
A windsurfing catamaran with a self-stabilizing wing. The wing is moved to the correct position by counter balancing water pressure from a rotating central keel connected to a central mast. The...
6805065 System and method for reducing or eliminating sailboat heeling  
A system and method for reducing or eliminating heeling in sailboats of any hull design by allowing the mast and sail assembly to heel in a significant wind while the hull remains flat relative to...
6789489 Sailboat with gimbaled mast and keel  
A modified mast and keel system for a sailing vessel. The mast is gimbaled to the hull, so that it can move in a pitch roll. A downward extension of the mast pivotally connects to a winged keel....
6575107 Rotary gear for sailing boats  
An improved rotary gear for sailing boats is provided wherein the connection of the boom to the rest of the rig is such that on the horizontal plane the boom must rotate simultaneously with the...
6457430 Sailing assembly for small boats  
Small boats such as kayaks, canoes, and skiffs that are normally not propelled by wind power are provided with apparatus of this invention that can enable the conversion to a sailing vessel. A...
6378449 Competition or cruiser sailboat with implanted mast  
The invention concerns a competition or cruiser sailboat comprising a hull (1) closed by deck (2), and wherein is implanted the lower end of a mast (4) bearing the rigging, characterized in that...
6269763 Autonomous marine vehicle  
An autonomous marine vehicle is disclosed, the vehicle comprising a rigid hull having an interior and a periphery, a deck joining the rigid hull at the periphery; and a rigid mast pivotally...
6116177 Mast with top boom  
An improved mast assembly for use on a sailing vessel having both an upper boom and a lower boom that allows a user to control the upper section of the sail independently or in conjunction with...
6089173 Multi-hull watercraft with self-righting capabilities  
A multi-hull watercraft, such as a catamaran or trimaran is constructed to facilitate the righting thereof following a capsize. By providing a pivot connection between the hulls and the...
6058867 Sailboat mast inclining mechanism  
A mechanism to improve performance and increase the speed of a sailboat by inclining the sailboat's mast and its supporting stays from side to side, enabling a sailor to lean the weight of his...
6032599 Suspension apparatus for a sailboard  
A suspension apparatus is described for use in the sport of windsurfing. The apparatus reduces loads exerted by a mast member on a sailboard, and includes a shock absorbing system having a...
6023920 Apparatus for destroying aquatic vegetation  
An apparatus for destroying aquatic vegetation includes a vegetation shredder supported on a watercraft to project below the water surface so as to engage all portions of the plant proximate to...
5967073 Sailboat system for controlled gibing  
A system for controlling the jibe movements of a sailboat boom (4), which boom has an outer free end (5) connected to the boat (4) via a sheeting arrangement (6), and an inner end (7) fixed to the...
5947045 Balancing system for sailing boats  
This invention refers to single hull/multi-hull sailing boats. Two suitably shaped floats are laterally applied to the hull of single hull boats; they slide from top to bottom along suitable...
5908005 Yacht  
A yacht (10) includes a mast (12) that is mechanically connected to a keel (14) via a bearing (16), located in the base of hull (18) of the yacht (10). A sail foil (30) is pivotally mounted to the...
5865136 System for lifting and lowering a sailboat mast  
The inventive system and method provides a portable sailboat mast hoisting crane which is safe, light weight, easily assembled, easily disassembled, and operable by one man. The crane can be...
5845593 Man and wind powered aquatic vehicle  
A non sinkable, easily re-rightable aquatic vehicle has a lightweight body with a front, a rear, a bottom and opposite sides and contains a seat for supporting a pilot. A pair of front sheaves are...
5628266 Windsurfer mast deflector  
This invention relates to an apparatus for protecting the bow of a sailboard from damage caused by a falling mast and boom assembly, and includes at least one deflecting surface and structure for...
5605480 Easily maneuverable vessel propelled by eight jets and sails  
A vessel having a hull of effective rectangular configuration and utilizing a dual propulsion and steering arrangement, including sails and an eight jet system, thus making the vessel extremely...
5603277 Tack aback sailboat  
A rudderless sailboat having a hydrodynamic symmetry fore and aft which can be sailed equally well in either direction. The craft is steered by tilting the mast and keel. In an alternative...
5570651 Sailing vessel with adjustable mast  
A sailboat is provided with an adjustable mast system in which the base of the mast is pivotally attached to the top deck surface of the sailboat hull. Hydraulic cylinders connected to and...
5560310 Control unit  
A control unit incorporated in a stabilizing system in yachts and sailing vessels and intended automatically to control the movements of a weight which is movable transversely across the vessel,...
5556677 Composite shaft structure and manufacture  
The invention provides improvements to a composite member that has a plurality of plies. The improved composite member has (1) an interior ply which functions to dampen or resist sudden forces...
5529007 Automatically ballasted sailboat  
A sailboat without stays for the mast has automatic ballasting which uses a tilting main mast and a tilting pole that has weights traveling up it to counteract increasing wind force upon the sail....
5509368 Sailboat with pivotable mast  
A sailboat having improved comfort and safety and comprising a hull having a deck having a port side, a starboard side, and a central portion between the port and starboard sides; at least one...
RE35081 Composite structural member with high bending strength  
A composite member (10) features a unique ply geometry which contributes to improved bending strength. The composite is constructed of a plurality of plies, each comprising a fiber component...
5410977 Rudderless sailboat  
A rudderless sailboat having a mast keel assembly which can be pivoted fore or aft to generate a moment of force to effect easy precise sailboat steering. In one embodiment including a catamaran,...
5392727 Balancing system for a sailing boat  
A system for maintaining the hull of a sailing boat in a steady position substantially independent of wind pressures on the sail, comprising a pivoted mast and wires connecting the mast with a...
5280760 Sailing craft  
A sailboat apparatus includes a hull having a bottom, bow and stern portions along with a central portion and at least one mast for supporting a sail extending above the hull. The mast is mounted...
5271349 Wing sail structure  
A wingsail structure wherein the sail comprises a plurality of ribs encircling the mast and is guided slidably along the mast. A fabric skin is wrapped around the ribs. In a preferred embodiment,...
5216971 Catamaran righting apparatus  
An improved apparatus for righting an upset catamaran is disclosed. Apparatus are provided to apply and maintain a compressive force in the mast while extending the out-of-water permanent shroud...
5211123 Sailboard  
An improved sailboard in which the sail assembly is mounted to the board in a manner to allow pivoting about an axis inclined rearwardly and also about a horizontal pivot pin. The sail assembly is...
5197401 Rotating ring mast sailing vessel and a method of vessel operation  
A system for powering a water vessel having as its principal components rectangular sails secured to a rectangular frame which in turn is attached to an annular mast rotatably mounted on a...
5191850 Sail boat righting system  
A righting system for a multi-hulled sailing vessel with a floatable mast has mast support cables, including aft mast support cables, extending from the top portion of the mast to vessel anchor...
5176091 Sailboard pontoon and mast rigging assembly  
A pontoon and mast rigging assembly for a sailboard. Four pontoons are arranged laterally about the sailboard hull and attached thereto by means of individual outriggers. Individual elastic straps...
5163377 Sailing yacht  
High performance sailing yacht designs are disclosed based on a keelless sailing yacht concept having fore and aft cambered foils for leeway control which foils replace the function of the...
5134950 Sailboat  
A sailboat having a tetrahedral frame formed of six beams, three of which form the triangular deck with three hulls disposed at the vertices of the triangular deck extending outward from the plane...
5083520 Mast, in particular for sailing boat  
A mast for a sailboat includes at least two mast components having a lower end attached to the boat on opposite sides of a longitudinal median plane of the boat. Upper ends of the mast components...
5072682 Sailboat with a pivoted mast-to-hull mounting system  
Substantial improvements in design, cost, performance, safety and comfort could be had in sailboats if the hull were to navigate in a level attitude even under strong wind conditions. This is...
5060590 Sailing apparatus  
A wind propelled apparatus in which a mast is mounted on a craft and supports an arcuate boom and a sail therebetween. The position of the mast and sail is controllable and maintained directly by...
5054411 High performance sailing craft  
A pair of outrigger hulls are located on the ends of a wing, to which is movably attached a central hull which can be moved back and forth with respect to the outrigger hulls. A pivotable mast...
5042412 Windsurfer sail and mast righting device and method  
A device for righting a windsurfer sail and mast that has free fallen along one of a plurality of vertical planes upon release is described. A pulley is attached to a strap which in turn is...
4993339 Uphauler for boardsailing  
An improved uphauler assembly for use in facilitating the uphauling of a sail of a sailboard by a user wearing a harness including a harness hook. The assembly includes an uphauler rope or line...

Matches 1 - 50 out of 125 1 2 3 >