Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7337735 | Hybridhull boat system A hull is formed of a forward section and rearward sections and intermediate sections there between. A saloon has a transparent front extending upwardly from the forward section with sides extending upwardly from the rearward sections and a roof coupling the front a... | 03/04/2008 |
| 7237500 | Hull construction for side hulls of trimaran and the like An amah for a high speed seagoing multi hulled vessel, the amah having sides extending upwardly and outwardly from a base line, the sides having longitudinally extending vertically spaced stiffeners, the bow of the amah including a plate field comprising a plurality... | 07/03/2007 |
| 7234404 | Water craft with a sail A catamaran-type water craft includes a frame (1) which is fixed on two bodies forming floats (2) and a sail (5) for wind-driven displacement when the floats are on a stretch of water, characterized in that the water craft includes a central pil... | 06/26/2007 |
| 7177735 | Control apparatus for a hull with a four-cycle engine installed thereon A control apparatus for a hull with a four-cycle engine installed thereon can perform engine stop processing by quickly detecting a turnover state of the hull while suppressing a turnover determination delay due to noise superposition. The apparatus includes a turno... | 02/13/2007 |
| 7137349 | Kickdown catamaran A kick down and kick up catamaran assembles by hand with holes in main spar and stern spar ends receiving threaded rods extending vertically from the side-by-side hulls, secured in place with hand knobs. A bow spar with a line to the mast lifts the mast to vertical ... | 11/21/2006 |
| 7128010 | CBTF sailing yacht appendage retraction system A canting ballast twin foil (CBTF) sailing yacht constructed according to the invention includes a sailing hull, a laterally moveable ballast suspended beneath the hull that provides a counter heeling force when the yacht is underway, and fore and aft foils that pro... | 10/31/2006 |
| 7104209 | Hybridhull boat system A hull is formed of a forward section, a rearward section and intermediate sections there between. The forward section is in a generally triangular configuration. The forward section has a forward-most point. The forward section has rearwardly extending sides. The r... | 09/12/2006 |
| 7055446 | High-Froude hull ship A large-waterplane-area ship operable to efficiently operate at a high-Froude velocity. In one embodiment of the invention, a large-waterplane-area ship includes a hull structure having a plurality of exclusive hull portions protruding from a main body of the hull s... | 06/06/2006 |
| 6951180 | CBTF sailing yacht main engine drive system A canting ballast twin foil (CBTF) sailing yacht constructed according to the invention includes a sailing hull, a ballast, a ballast-supporting structure, and an onboard ballast drive system. The ballast drive system moves the ballast in order to vary the counter-h... | 10/04/2005 |
| 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 keel rotates in the opposite direction of the wing when the wing is move... | 08/02/2005 |
| 6694907 | Sailboat hull and method for reducing drag caused by leeway A shaped hull with a fixed angle keel with respect to the hull that when heeled, orients the keel to an angle of attack substantially related to the heel angle. The angle of attack being sufficient to create on the keel a lateral force substantially equal... | 02/24/2004 |
| 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 maneuverable.... | 02/25/1997 |
| 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 embodiment the sailboat also has no keel. The hulls are rigid and ... | 02/18/1997 |
| 5476054 | Hull for watercraft In order to attain a superior performance of a sailboat (1) under different conditions, e.g., dead calm, average winds, high waves, etc., the invention makes possible that the two longitudinal sides of the hull essentially correspond with the gliding surf... | 12/19/1995 |
| 5337690 | Vertical sail boat One embodiment of a vertical watercraft for stable transport in rough seas includes a normally above-waves sail, a normally vertically-disposed elongate hull being normally substantially submarine in operation, and an adjustable ballast device. The ballas... | 08/16/1994 |
| 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 standard keel. A keelless sailing yacht of this type is disclosed ... | 11/17/1992 |
| 5088431 | Sailing vessels Proa sailing vessel including a pair of spaced hulls comprising a windward and a leeward hull, a crossbeam assembly interconnecting the hulls and a fixed mast assembly with its lower end supported on the crossbeam intermediate the hulls and being inclined... | 02/18/1992 |
| 5038694 | Small sailing ship A small sailing watercraft designed to be operated primarily by a single rider standing on the deck and having an improved hull configuration for improved handling in all seas and all wind conditions. The hull is hollow and is formed with a generally narr... | 08/13/1991 |
| 4947775 | Water air interface vehicle A water and air supported vehicle propelled by the wind. The vehicle includes a long narrow hull (30) that displaces water at low speeds and a plurality of hydrolfoils (36) distending from the hull in communication with the water resisting lateral loads a... | 08/14/1990 |
| 4936236 | Symmetrical sailboat with moment balancing rig A fully symmetrical sailboat includes a mechanism that balances the moment of a sailor on a boom against the force of the wind on the sail in such a way that the hull remains level. The sailboat comprises a hull with both lateral and longitudinal symmetry... | 06/26/1990 |
| 4856445 | Sailboat construction A sailboat construction includes a hull having spaced first, second and third longitudinally extending lateral resistance elements which provide resistance to lateral movement of the boat under normal sailing conditions. The first and third resistance ele... | 08/15/1989 |
| 4819574 | Rudderless sailboat This specification discloses a rudderless sailing craft with two sails of approximately equal area and a vertical keel affixed to the hull near a balance point between the two sails. The central part of the craft between the two sails serves as an unobstr... | 04/11/1989 |
| 4702186 | Sailboat having at least two hulls In a sailboat having at least two hulls which are rigidly connected in parallel spaced arrangement by a platform, the hulls are provided at least at the bow with a bulge-shaped or drop-shaped design which runs into a wedge or blade shape astern. The later... | 10/27/1987 |
| 4562784 | Sailing craft A sailing craft having hydrodynamically shaped catamaran hulls and tapered configuration rudder assemblies attached to each hull. Low draft keels are attached to the fore one-half bottom portions of the hull and a pitch-sensitive variable camber mast and ... | 01/07/1986 |
| 4503795 | Sailing craft A sailing craft (1) comprising a center cross-plane symmetric hull (2,3) and capable of sailing in either direction is disclosed herein. Good skimming properties are imparted to the sailing craft (1) by utilizing the principle of the normative angle of in... | 03/12/1985 |
| 4463699 | Sailing craft A sailing craft having hydrodynamically shaped catamaran hulls and tapered configuration rudder assemblies attached to each hull. Low draft keels are attached to the fore one-half bottom portions of the hull and a pitch-sensitive variable camber mast and ... | 08/07/1984 |
| 4401047 | Wind-propelled craft A wind-propelled craft having at least two elongated, low-profiled, flat-bottomed floats. The floats are parallelly and distally connected by a framework adapted to support the wind propulsion structure. The framework and floats are connected by fore and ... | 08/30/1983 |
| 4273060 | Sailing vessel The sailing vessel of the present invention includes a hull of omnidirectional construction, and a generally triangular sail which is supported along two side edges, with the third side edge unsupported and extending generally horizontally. The angular po... | 06/16/1981 |
| 4193366 | Sailing boat and method of operating the same A sailboat having a hull, a sail assembly and a keel. The keel is shaped as a longitudinally and horizontally extending hydrofoil which developes a vertically downward force. When the boat is traveling in a heeled position, the keel member exerts a downwa... | 03/18/1980 |
| 4089286 | Sailboat keel A sailboat keel, especially for shoal draft sailboats, which reduces turbulence and generated vortices and increases laminar flow along the hull and keel, which comprises a upper portion attachable to the canoe hull and a body portion extending downwardly... | 05/16/1978 |
| 4061099 | Outrigger sailboat An outrigger sailboat having a drive outrigger hull is disclosed herein. A pair of movable keels is rotatably connected to a bottom portion of the drive outrigger hull. The movable keels are adapted to rotate in opposite directions. A pair of masts is mou... | 12/06/1977 |
| 3981258 | Waterski sailboat A hydrofoil sailboat with a slender hull and a foil-shaped sail spaced laally therefrom. The hull has one flat side facing the sail and one convex side. The sail is inclined from the vertical toward the hull and is supported at its base ends by a pair of... | 09/21/1976 |
