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7370593 |
Windsurfing catamaran vessel
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...
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7285031 |
Fin systems
FIG. 1 is an exploded view of the invention that consists of a reusable installation guide or router template, ( 13 ), which also doubles as a resin dam to secure receptacle, ( 9 ), into substrate...
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7108571 |
Method and apparatus for attaching a fin to a small watercraft
Apparatus is provided for attaching a fin to the underside of a small watercraft, such as a surfboard. The apparatus includes a holder which is attachable to the underside of the surfboard, so that...
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6916220 |
Removable fin system
A pivotal fin system, for use with an aquafoil, such as surfboards, body boards, wave skis, sail boards, wake boards and the like, comprising a pot ( 3 ) and a fin ( 2 ), having a tab ( 18 )...
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6821173 |
Removable and adjustable surf fin system
A fin plug assembly to receive and engage a fin includes a cavity, a cam with gears, and a worm gear. The fin plug assembly allows a quick and easy fore-aft adjustment of the fin. Disclosed also is...
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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. An...
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6767266 |
Stabilizing element for use on mobile devices
A stabilizer for a mobile device includes a first element that has a center-plane and an upper end for attachment to a bottom surface of the mobile device. The stabilizer also has a hollow tubular...
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6746292 |
Bottom fin for a watersports board
A bottom fin for a watersports board such as a surfboard or a windsurfer board. It has an upper body portion having a leading edge that extends downwardly and rearwardly from its front end. The...
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6739925 |
Hydrodynamic device
A hydrodynamic device for use with a recreational water vessel such as a surfboard, disrupts a flow of water under the recreational water vessel. A channel member ( 12 ) and a fixing device ( 14 )...
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6386933 |
Enhanced customizable surfboards with adjustable fins and methods for making the same
A surfboard includes a body, a fin, a chamber disposed in the body, and a fastener. The fin is receivable in the chamber and projects from the body at a cant when received in the chamber. The...
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6139383 |
Fin assembly
A fin assembly [10] is provided for detachably removing a fin [12] in a surfboard [13]. The fin [12] has a mounting base [26] and spigots [22 and 23] projecting from front and rear positions on the...
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6135837 |
Water sports board
A water sports board for use in supporting a person riding along on the top surface of the water. The elongated buoyant board has an elongated slot in its bottom surface for each of its fins. The...
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6106346 |
Stabilizing fin for a water planing device
The stabilizing fin includes an upper vertical stabilizer element, a hollow tubular element, and a lower vertical stabilizer element. The upper vertical stabilizer element has an upper end for...
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6032600 |
Weighted daggerboard stabilizer for wind surfing apparatus
A wind surfing apparatus formed with a hull supporting a mast and sail includes a removable daggerboard having a weighted mass in a lower end portion thereof to lessen the tendency of the hull to...
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5873588 |
Assembled sail powered vehicle
An assembled sail powered vehicle, including: a sail; a frame for supporting the sail, the frame including a plurality of elongated rigid frame members, a plurality of joint assemblies releasably...
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5809926 |
Lifting fin
A sloped hydrofoil (22) is mounted to the bottom of a sailboard or surfboard vertical strut (26) using a hinge joint (24). Hinge joint (24) allows reversal of sloped hydrofoil (22) slope in...
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5533462 |
Keel arrangement for sailboat hull
The invention provides an improvement in a keel arrangement for a sailboat hull, of the kind having an elongated ballast member spaced below the hull so as normally to extend horizontally and...
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5471942 |
Hydrofoil sailboard with supercavitating canard hydrofoil
Canard configured hydrofoil sailboards which are normally operated rolled to windward and without yaw and which employ a canard hydrofoil that tracks the water surface are of proven practicality....
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5409408 |
Sailboard with reciprocating fins and umbrella type rotary parafoil sail
The windsurf board comprise a revolving sail, reciprocating fins and single sided pedal. The revolving sail rotates a drum to drive the reciprocating fin. On the drum, there are multiple cycles of...
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5309859 |
Hydrofoil device
A hydrofoil sailboard comprising a conventional sailboard, without the usual tail skeg, equipped with two hydrofoils arrayed in a canard configuration, the combined lift of the foils being...
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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...
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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...
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5195444 |
Sailboard
The present invention relates to an apparatus designed to launch a sailboard out of the water while the sailboard is being sailed on the water. The apparatus comprises launching means including a...
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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...
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5148761 |
Daggerfin adjustable sailboard skeg
A wind propelled sailing apparatus having a sailboard hull adapted to support a user; a sail for propulsion of the sailboard hull and adapted to receive wind for motive power; a skeg positioned and...
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5143008 |
Sailboard
A windsurfing board or sailboard is shown having a dash for supporting a sailboarder and an improved rudder gear assembly. The dash projects upward from the sailboard and is positioned such that...
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5133681 |
Frangible sailboard fin retaining member
A frangible sailboard fin retainer and method of releasably retaining a fin to a sailboard fin box including forming complementary openings in the fin and the fin box, inserting a bolt assembly...
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5129344 |
Actuating mechanism
An actuating mechanism is provided for controlling external devices by means of coaxial actuating cables or other suitable linkages. The actuator includes an internal slide element movable to...
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5048440 |
Sailing apparatus
A sailing apparatus includes a sail having a batten which is positioned relative to the mast by a coupling member which serves to induce a camber in the batten and enhance and stabilize the draft...
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5022337 |
Lift producing device exhibiting low drag and reduced ventilation potential and method for producing the same
A lift producing device is disclosed which is adapted to be connected to a vehicle to provide lift to the vehicle when the vehicle is moved relative to a first fluid medium having a first density...
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4998494 |
Device for enhancing the buoyancy of sailboards and the like
The bow portion of a sailbaord is insertable into a pocket at the underside of an inflatable delta-shaped hull having a width exceeding that of the sailboard. This results in a boat which is...
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4924791 |
Adjustable sailboard
A sailboard including hull, mast and rigged sail assembly and a foot operated rudder pivotally and rotatably mounted to the stern of the hull, with the rudder being adjustable longitudinally to the...
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4922845 |
Boom for a sailing device
A multi-level boom adapted for use on a sailing device such as a sailboard. The boom comprises a lower portion in a wishbone type shape having a forward end adapted to be secured to a mast and an...
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4771723 |
Sailboard assembly having a foot-operable steering assembly
A sailboard assembly is disclosed which has a body on which the user stands, a mast, boom and sail assembly for propulsion of the board. The mast-boom-sail assembly is mounted to the board by a...
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4753183 |
Double boom rigged windsurfer
Wind propelled apparatus employing a mast and a sail, in particular a windsurfer for boardsailing is provided with a first boom, rigged in the usual fashion, and also having a second boom of...
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4735163 |
Collapsible sail board
A collapsible sail board is disclosed which includes an inflatable flotation member, a multisection mast, a collapsible boom, a sail, and a keel. The mast is detachably mounted on the upper side of...
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4730568 |
Waterborne craft
A water borne craft includes a smooth rounded elongate sailboard type hull of little depth. The hull tapers down in width and in depth from its middle towards its ends and has smooth upper and...
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4715304 |
Hydrofoil marine apparatus
Hydrofoil marine apparatus comprising a hull, a pair of hydrofoils, each including first and second planar surface portions, pivotal mounting apparatus for mounting the pair of hydrofoils onto the...
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4708079 |
Flex wing apparatus with resilient couplings
A flex wing apparatus comprising a support, a mast coupled to the support and a sail. Battens are carried by the sail, and a coupling arrangement joins the leading edge of the battens to the mast...
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4628853 |
Recreational watercraft
A watercraft has a hull that is further supported above the surface while underway by a ski and integral hydrofoil, the hydrofoil is semicircular and is affixed to the hull and ski.
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4539926 |
Board-like floating body
A board-like floating body has a fixed mast, a swingable sail fastened to the mast, and an outrigger which is arranged so as to be swingable about an axis perpendicular to the upper side of the...
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4508046 |
Wind surfing hydrofoil apparatus
Wind surfing hydrofoil apparatus for enabling hydroplaning of a wind surfing board having a mast mounted centrally thereon between a front end portion and a rear end portion of the board, and...
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4448142 |
Boom assembly for sailboard
A boom assembly is pivotally attached to the mast of a sailboard for pivotal movement between a use position and a storage position. The boom assembly includes a boom bracket and a pair of booms...
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4434737 |
Displacement, planing sailboard
A highly efficient sailboard shape has a full displacement form for efficient light and upwind sailing and has an efficient planing form for high wind sailing with the conversion from displacement...
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RE31167 |
Wind-propelled apparatus
Wind-propelled apparatus in which a mast is universally mounted on a craft and supports a boom and sail. Specifically a pair of curved booms are arcuately connected athwart the mast and secure the...
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4369724 |
Wingsail
A low drag and high lift sail has a fabric skin suspended by an edge tension device able to control forward and trailing edge tension to tune and reverse the airfoil section. The fabric skin is...
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4331093 |
Composite wind surfboard
Two single surfboards (11, 12) are linked and assembled together in tandem fashion by a linking member (13) of elongated shape located underneath the two single surfboards (11, 12) and secured at...
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4311107 |
Wind propelled apparatus
An improved wind-propelled apparatus is disclosed which includes a body mounting a stub mast generally orthogonal thereto. The stub mast is mounted in a well formed on the body and secured by a...
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4253209 |
Sail boards
A transportable sail board has one or more inflatable bladders, and an envelope subdivided into plural demountable longitudinal sections. Rigidifying elements cooperate with bladder and envelope to...
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4194458 |
Windsurfer with auxiliary propulsion equipment
A standard windsurfer having a surfboard-type body provided with a daggerboard and having a mast and boom that support a sail on the surfboard is formed with an upwardly open storage compartment...
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