Bizarre Patents
Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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| Number | Title | Issue Date |
| D576097 | Seat board for board kiting | 09/02/2008 |
| D571707 | Sailboat of the drift-type | 06/24/2008 |
| 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 |
| D531107 | Boat | 10/31/2006 |
| D519073 | Sailboat | 04/18/2006 |
| D514499 | Sailboat | 02/07/2006 |
| 6935909 | Apparatus and method for a gliding board for fluid riding sports A curved lower surface of a gliding board, such as a wakeboard or a surfboard, is provided with an anticlastic shape to resemble the shape of a saddle. The lower surface of the board is concave in a transverse cross section and convex in a longitudinal cross section... | 08/30/2005 |
| 5392726 | Sailboat A sailing craft having a center hull, a port hull and a starboard hull. The port and starboard hulls are adjustably connected to the center hull by bridge beams such that the port starboard hulls may be disposed adjacent to, or outward from, the center hu... | 02/28/1995 |
| 5351638 | Keel assembly for a sailboat A keel assembly for a sailboat includes a base portion which is integrally formed with the underside of the hull of the sailboat, a keel portion which is adapted to be releasably received in assembled relation with the base portion, and a plurality of fas... | 10/04/1994 |
| 5351637 | Inflatable sailboard A novel stable inflatable or inflated sail board is provided. The sailboard includes a plurality of discrete, gas-fillable or gas-filled, elongated chambers, each chamber having a top skin and a bottom skin, each chamber, when inflated being sufficiently ... | 10/04/1994 |
| 5347946 | Structure for aerodynamic transition between mast and sail in a sailcraft Sail structure for sailcraft for improved air flow transition from the saraft mast. Several embodiments are provided in which a pair of sail luff panels are maintained in close proximity to aft portion of the mast. In a first and second embodiment, infla... | 09/20/1994 |
| 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 |
| 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 supported from a shaft secured in the board and having an ... | 05/18/1993 |
| 5197403 | Sailing vessel and profile mast for sailing vessels Sailing vessel and mast for sailing vessels wherein the mast is in the form of a profile body. In an arrangement with a profile mast to hold a reefing roller, the mast is braced with its mast foot between the deck and keel area of the vessel. The profile ... | 03/30/1993 |
| 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 flap which is submergible in the water and pivotally suppor... | 03/23/1993 |
| 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 points aft of the mast, and extendable and contractible vesse... | 03/09/1993 |
| 5188056 | Pleasure boat with sails or motor Pleasure boat with a sail or motor comprising a hull and a deck separated by an interface, remarkable insofar along the outlying perimeter of the interface on the hull and/or on the deck, it has one or more shaped indentations which, when the hull and the... | 02/23/1993 |
| 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 interconnect each pontoon with a mast top mounted above an... | 01/05/1993 |
| 5170734 | Wind propelled craft with multi-function rudder control arm A unique wind propelled craft including a body, a deck which forms the upper surface of the body, a sail for propelling the body by wind forces, a rudder for maneuvering the craft, and a rudder control assembly for controlling and adjusting the position o... | 12/15/1992 |
| 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 |
| 5158035 | Portable collapsible boat A portable collapsible boat comprises a body formed of a bottom and a pair of sides which are integrally molded with the bottom. The sides are elastically flexible so as to be foldable to horizontal positions overlying the bottom, and unfoldable to uprigh... | 10/27/1992 |
| 5144903 | Yacht and yacht model A yacht model or a full scale yacht includes a hull and a mast is provided on the hull to extend upward from the hull to support a main sail. A spinnaker is provided in front of the mast and the spinnaker is made of a plastic material and formed in a bulg... | 09/08/1992 |
| 5103752 | Hull for sailing ship A hull for sailing ship makes it possible to sail mostly by sail and by engine when necessity arises. An auxiliary propulsion engine is installed within a ballast portion protruding downward from the bottom of the hull body, so that the auxiliary propulsi... | 04/14/1992 |
| 5095837 | Ram-air inflatable beam for use with a spinnaker A spinnaker, a large, substantially triangular sheet of flexible material with a front face and two side peripheral edges, is attached to a mast of a sail boat. A ram-air inflatable beam for use with the spinnaker includes a tube, an air inlet and a valve... | 03/17/1992 |
| 5074234 | Vortex generators for sails A vortex generator for attachment to the surface of a sail of a sailboat made from a strip of foldable material such as sail cloth or film that has a central member formed of two panels of the strip joined together by pressure sensitive adhesive and a foo... | 12/24/1991 |
| 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 capable of supporting several persons. The stern portion of the ... | 03/12/1991 |
| 4945845 | High-speed sailing craft A craft propelled by an inclined sail. Sail lift causes hull to be raised by rotating to windward about an outrigger borne by tandem surface boards, thus decreasing resistance.... | 08/07/1990 |
| 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 |
| 4926774 | Wind propelled apparatus A wind propelled apparatus is disclosed which includes a surfboard having a wind-propulsion sail adapted to receive wind for motive power, and a training sleeve which surrounds a substantial portion of the surfboard and includes side pontoons or stabilize... | 05/22/1990 |
| 4895092 | Mainsail furling device for a sailboat A mainsail furling device for a sailboat having a boom comprising a plurality of pairs of mounting brackets attached to the boom, each of the mounting brackets having a substantially L-shaped cross section and two connected approximately rectangular brack... | 01/23/1990 |
| 4890570 | Wind propelled sailing craft A wind propelled sailing craft. The craft includes a frame with fore-and-aft beams interconnected by transverse beams. A deck is attached to the frame where the operator will sit on a trampoline. A sail-like structure is attached to the frame and extends ... | 01/02/1990 |
| 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 |
| 4856448 | Harmonica sail A sail for a boat comprising a first panel having a predetermined draft therein, a second panel having a predetermined draft therein, and a plurality of baffles extending between the first and second panels, the first and second panels being open at the l... | 08/15/1989 |
| 4854904 | Sailboard with adjustable keel mechanism A planing-type hull has a keel which projects downwardly from a disk which is mounted in the bottom of the hull for limited rotational movement about a vertical axis located rearwardly of the center of the keel. In a second embodiment the keel projects do... | 08/08/1989 |
| 4852507 | Sail-wing and controls for a sail craft An amphibious sail craft with a sail-wing system is disclosed, including a rotatably mounted mast, a rotatable boom pivotally mounted to the mast, and a sail-wing mounted to the boom and rotatable with the boom about horizontal and vertical axes for varyi... | 08/01/1989 |
| 4843987 | Heel counteracting airfoil A wing type airfoil is used to propel a vessel. The airfoil comprises a mast, a counterbalancing airfoil and a driving airfoil. The mast is elongate and has upper and lower portions, the lower portion is adapted to be connected to the vessel and extends u... | 07/04/1989 |
| 4838191 | Low-drag sailboat mast A mast for a sailboat includes a plurality of spaced parallel bars arranged as a polygon in cross-section wherein the bars are of a size to permit air flow therebetween and being oriented such that one of the bars is disposed nearer the aft of the boat th... | 06/13/1989 |
| 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 |
| 4803938 | Rotor powered sailboat A boat that is powered by an autogyro rotor is disclosed. A boat hull having a stern mounted rudder is provided with a selectively rotatable boom, preferably mounted in proximity to the rudder at the hull centerline. The boom is angled upwardly from its r... | 02/14/1989 |
| 4799443 | Swing sail boat A novel rigging for a sailboat is disclosed in which the mainsail is mounted between a luff boom and a foot boom, the luff boom being attached to the top of the mast by a fitting that allows rotation at least about a vertical axis parallel to the mast and... | 01/24/1989 |
