Class / Patent application number | Description | Number of patent applications / Date published |
114288000 | Having fluid channeling or entrapping configuration | 33 |
20080289563 | REAR-END WATER-SWEEPING DEVICE PARTICULARLY FOR AN AMERICAN FISHERMAN - The present invention provides a water-sweeping device configured to prevent the occurrence of water wall at the rear-end of a marine vehicle and particularly of an American fisherman vessel during backward movement, the device being characterized by comprising at least one water sweeping inlet, and at least one water distribution means running out of the portside or starboard sides of the vessel, said water distribution means being adapted to the water sweeping inlets. | 11-27-2008 |
20090120347 | Ship Bow - The invention relates to a ship's bow with a central inclined plane area and starboard and port catamaran-like runners laterally thereto, the inclined plane area and runners in the midships direction pass roughly into a fictional keel line. The aim is to create such a ship's bow which, whilst being very economic when operating the ship can be used in modular manner for the most varied ship types and operating zones. To this end the runners are given a wedge-like construction and at the front runner end is provided a free flow attack opening for the inclined plane area, which is constructed with a specific inclination angle α. | 05-14-2009 |
20090266286 | FLOW CONTROL DEVICE FOR IMPROVING PRESSURE RESISTANCE AND HULL VIBRATION - A flow control mechanism, for improving pressure resistance and hull vibration, includes a lower fin and an upper fin. The lower fin is disposed between a second station and a fourth station in a length direction of a ship and between 10% and 20% of a design draft from a bottom of the ship in a height direction of the ship, the lower fin being inclined at an angle of 20 to 40 degrees with respect to a design draught (or base) line. The upper fin is disposed between the second station and the fourth station in the length direction of the ship and between 30% and 60% of the design draft from the bottom of the ship in the height direction of the ship, the upper fin being inclined at an angle of 10 to 30 degrees with respect to the design draught (or base) line. Further, an additional fin is disposed between a first station and a third station in the length direction of the ship and between 5% and 20% of the design draft from the bottom of the ship in the height direction of the ship, the additional fin being inclined at an angle of 10 to 40 degrees with respect to the design draught (or base) line. | 10-29-2009 |
20090308300 | WATERCRAFT WITH WAVE DEFLECTING HULL - The invention is directed to a watercraft hull design that comprises a hull having a bow, stern, top, and bottom. A wedge-shaped wave spreading system is located at a forward portion of the craft. The wave-contacting surface planes of the wave spreading system are positioned substantially perpendicular to the plane of smooth water. The bottom edge of the wave spreading system is positioned near the level of smooth water when the watercraft is at cruising speed. The wave spreading system has a forward apex which forms a substantially perpendicular or vertical leading wedge to the plane of water. Since the apex and planes of the wave spreader are substantially perpendicular to the water, oncoming waves encountered by the wave spreader will tend to be deflected horizontally. Accordingly, the watercraft will more easily “cut through” waves instead of riding over them. Located rearwardly of the wave spreader, an internal hull prow is spaced from the wave spreading system, creating an air space therebetween. The air space extends from the rearward surface of the wave spreader to the front of internal hull prow, creating a buffer zone or dampening space to further minimize any wave action not detected by the spreading system. | 12-17-2009 |
20090320737 | Powered boat hull - A hydrofoil craft, particularly a method of economically modifying a conventional hull with cambered foils to obtain and calculate increased lift from dense spray and to achieve enhanced craft performance is disclosed. The present invention improves speed, fuel efficiency and rough water stability, reduced pitch and vertical accelerations. A catamaran or V-bottom hull is modified with chine mounted aerofoils, flexible dihedral cambered foils positioned beneath the water line and on either side of the bow so as to create turbulence in the forward end of a tunnel(s). Tunnels are created on the V-bottom hull by the chine mounted aerofoils. Fixed forward tunnel cambered foil(s) and/or fixed or adjustable center tunnel cambered foils at the stern end of the tunnel to generate lift from pressure caused by dense spray in the tunnel(s) may also be provided. Adjustable cambered stern foils are mounted on the transom end of the tunnels. | 12-31-2009 |
20100050920 | BOAT HULL WITH CHANNEL FORMING MEMBER AND METHOD OF MANUFACTURE - A molded boat hull is provided having a channel forming member extending between a motor mounting transom and an aft riser that forms a step in the bottom portion of the boat hull. The channel forming member has at least one open side and at least an opening in another side to provide a fluid flow communication channel from the atmosphere to the underside of the boat in the step area. The channel forming member is formed as an integral part of the boat hull during forming of the boat hull by molding. | 03-04-2010 |
20110185959 | Watercraft with Asymmetrical and Symmetrical Boat Hull - A watercraft that uses a hybrid hull that has two asymmetrical front hull sections that gradually transition rearward and form two symmetrical rear hull sections separated by a tunnel. The two front hull sections are longitudinally aligned on opposite sides of the hull's center axis and form a front pickle. Each front hull section includes a flat, vertically aligned inboard surface that intersects with a conical shaped span deck that extends along the bottom of the hull and terminates at a transversely aligned front landing door or front transom. The lower edge of each front hull section gradually curves rearward and downward forming a shape keel. The two rear hull sections are v-shaped longitudinally aligned with the two front hull sections with a narrow tunnel formed between them that communicates with the span deck. Formed on each rear hull section is a delta surface with a skeg attached thereto. | 08-04-2011 |
20140102349 | KEEL PAD, BOAT HULL WITH A KEEL PAD AND RETROFIT KIT - A keel pad is provided for a hull of a boat. The keel pad contains a main body and two fingers extending from the main body in a direction of a front of the hull. Due to curved shape of the fingers, drag is reduced allowing the boat better planing properties and greater fuel efficiencies. | 04-17-2014 |
20160001848 | Means of Water Surface Transport - A water surface transport means, comprising a bottom ( | 01-07-2016 |
20160185424 | INFLATABLE CRAFT HAVING V-SHAPED HULL AND FLAPS - The invention relates to a vessel which includes two watertight flaps ( | 06-30-2016 |
114289000 | With fluid introducing means | 18 |
20080210150 | VENTILATED AFT SWEPT FLOW INTERRUPTER HULL - A boat hull has an aft swept ventilated area in at least a part of its bottom planing surface. An aft swept water flow interrupter is positioned to project downwardly from the hull forward of the ventilated area. The aft swept flow interrupter has two generally angularly related legs or sections defining a 30° to 70° included angle, increase lift on the hull, reduces wetted surface area and improves the turning characteristics of the hull. | 09-04-2008 |
20090126618 | AIR CAVITY VESSEL | 05-21-2009 |
20090188419 | BOAT HULL WITH AIR AUGMENTED CENTER V-HULL AND AERATED SPONSONS - Boat hull having aerated longitudinal hydrosponsons with air injection into tunnels and distribution to generate bubbles across central running surfaces. | 07-30-2009 |
20090241825 | SURFACE EFFECT HULL CONFIGURATION UTILIZING REBOUND HUMP SEAL - A boat hull configuration for a boat includes a hull body having an air cavity created on an underside thereof that receives pressurized air from a blower through a blower inlet or plenum. The plenum is positioned in the cavity such that it divides the air cavity into a bow portion and an aft portion. The upper surface of the bow portion of the air cavity is configured to form a seal with a rebound hump produced by the hull body moving across a water surface when the ship is operating in a given speed range. This seal prevents air from venting from the forward portion of the air cavity when the bow of the hull rises during start up. The upper surface of the aft portion of the air cavity is positioned such that it does not come into contact with the rebound hump as the hump moves toward the aft of the hull as the boat accelerates. At high speeds, the rebound hump is behind the boat and the entire air cavity is pressurized and providing the maximum amount of lift and drag reduction. | 10-01-2009 |
20100071607 | SHIP WITH A SPECIAL LOWER LEVEL - The ship body of the present invention comprises at least two levels. One is an upper level that comprises a floatable body. The other is a lower level. The lower level is intended to be submerged under water in normal use. The lower level comprises at least two parallel, essentially vertical walls, a floor, and a ceiling connecting the at least two parallel essentially vertical walls. The front end and a rear end of the lower level are open to allow water to enter through the front end and exit through the rear end of the lower level. | 03-25-2010 |
20100139542 | Forced air cavity and control system for watercraft - The forced air cavity and control system for watercraft provides a source of compressed air against the hull, the compressed air being distributed via a pivotally adjustable air scoop mounted proximate the front of the boat, to which is connected a series of conduits (air passageways) leading downwardly from the housing. The conduits exit at openings in a V-shaped step in the hull of the watercraft to emit high pressure air against the hull to thereby reduce friction caused by hull contact with the water. A hydraulic ram operably connected to the air scoop provides a means of pivotal adjustment. A plurality of ice runners is provided on the bottom of the watercraft to increase stability of control under reduced water friction conditions. | 06-10-2010 |
20100139543 | Forced air cavity and control system for watercraft - The forced air cavity and control system for watercraft provides a source of compressed air against the hull, the compressed air being distributed via a pivotally adjustable air scoop mounted proximate the front of the boat, to which is connected a series of conduits (air passageways) leading downwardly from the housing. The conduits exit at openings in a V-shaped step in the hull of the watercraft to emit high pressure air against the hull to thereby reduce friction caused by hull contact with the water. A hydraulic ram operably connected to the air scoop provides a means of pivotal adjustment. A plurality of ice runners is provided on the bottom of the watercraft to increase stability of control under reduced water friction conditions. | 06-10-2010 |
20100236466 | APPARATUS FOR REDUCING DRAG ON A NAUTICAL VESSEL - The invention is an apparatus and method for reducing the drag that a vessel hull experiences when moving through the water by interposing air bubbles between the skin of the hull and the stream of water that the vessel is moving through. The invention delivers compressed air to the bottom of the vessel without the need for a high energy air compressor. | 09-23-2010 |
20100242825 | Slot-V hull system - The present invention comprises systems and methods of utilizing hull arrangements that combine aerodynamic and hydrodynamic effects to provide marine vessels with broader ranges of performance capabilities. The combination hull arrangements variously combine V-hulls, slot aspects, topographic features, and other hull characteristics that enable a vessel to retain the primary performance benefits of conventional V-hulls and achieve assorted improvements. Embodiments of the slot-V hull system employ specifically shaped hull characteristics to influence the manners in which water, air, and air/water spray mixtures interact with the vessel's hull. One principal operative effect can enable a vessel with the slot-V hull system to achieve a planing attitude more rapidly and efficiently than a standard V-hull. | 09-30-2010 |
20100269747 | VENTILATED STEP BOAT HULL WITH TUNNEL AND MOVABLE MEMBER POSITIONED THEREIN - The boat hull has an exterior lower surface with at least one step surface therein. A channel extends from the step surface to the bow of the boat, with an opening at the bow, permitting air to flow along the channel. A movable member is positionable within the channel, wherein the movable member and can be positioned at selected locations therealong, defining an adjustable additional step for the hull. | 10-28-2010 |
20100313808 | WATERCRAFT WITH STEPPED HULL AND OUTBOARD FINS - A watercraft ( | 12-16-2010 |
20110056425 | WATERCRAFT WITH HULL VENTILATION - An engine-powered watercraft includes three parallel hulls, namely a center hull with two or more transverse steps, and two smaller outer hulls or amas on either side of the center hull that are configured to form two vent ducts on either side of the center hull, disposed between the center hull sides and the amas. The amas, steps and vent ducts are disposed along the length of the watercraft and are configured to enable high speed capability and to facilitate pressurization of the vent ducts. The pressurized vent duct maximizes ventilation of the running bottom of the watercraft so as to improve efficiency and to reduce drag thereon. The pressurized vent duct creates an area of lift at the widest, aft-most points of the running bottom, which thereby results in improving the transverse and longitudinal stability of the watercraft and in reducing the trim for better seakeeping. | 03-10-2011 |
20110088608 | BALLAST-FREE SHIP - By adjusting the amount of air supplied from compressed-air supply piping, a seawater level in an air cushion chamber is adjusted. Accordingly, even in a case of a ballast-free ship, there is secured a function to adjust a hull equivalent to an adjusting function of a ship having ballast tanks. | 04-21-2011 |
20110107954 | Combination Catamaran and V-hull - A marine vessel provides a hull having a bow, stern, and port and starboard portions, and a hull bottom having port and starboard sides that form a vee shape. A channel extends longitudinally from the stern toward the bow a distance at least half the hull length, and can extend substantially the entire length of the hull. The bottom of the channel is defined in part by a portion of the hull bottom. The top of the channel is defined by one or more upper panels or surfaces that form catamaran hulls with the port and starboard sides of the hull bottom when the channel is filled with water in a non-planing hull position. The channel is above the water surface when the hull is in a planing position wherein the water drains from the channel. | 05-12-2011 |
20110259257 | Apparatus for Generating Compressed Air and Distributing Compressed Air for Reducing Drag on a Nautical Vessel - The invention is an apparatus and method for reducing the drag that a vessel hull experiences when moving through the water by interposing air bubbles between the hull and the stream of water that the vessel is moving through. The invention delivers compressed air to the bottom of the vessel without the need for a high energy air compressor. | 10-27-2011 |
20120111258 | AIR CAVITY VESSEL HAVING LONGITUDINAL AND TRANSVERSE PARTITIONS - An air cavity vessel having longitudinal and transverse partitions is provided. The air cavity vessel, which injects air into the bottom thereof to form air layers in order to reduce resistance of the vessel, includes transverse partitions partitioning the bottom in a transverse direction, longitudinal partitions partitioning the bottom in a longitudinal direction, spatial areas defined in a grid pattern by the transverse partitions and the longitudinal partitions, an air supply unit installed in a forebody of the vessel and supplying compressed air into the spatial areas, and a compressor for supplying the compressed air to the air supply unit. Thereby, multiple air layers are formed on a bottom flat area on a small scale. | 05-10-2012 |
20150027359 | Pneumatic Boat Ski - A ski structure for increasing the performance of the vessel is intrinsic to or attached to the hull of the vessel. The ski structure includes a bow portion, a stern portion, an amidships portion, plurality of first sidewalls extending downwards to form one or more upside-down U-channel(s) along the length of the vessel hull and situated to provide balanced support across the width of the vessel. The bow portion includes a rear flap for allowing the entrance of water into the channel and prevents the escape of gas out of the channel(s). The stern portion includes a rear flap for preventing gas from escaping out of the stern portion. An inlet port on the amidships portion and in front of the rear flap for injecting a gas bubble beneath the vessel into the channel and pushing the gas bubble below the waterline and thus resulting in producing lift and effectively eliminating any solid surface part of the vessel hull from being below the water line. | 01-29-2015 |
20150329178 | Planing Hull with Concentric Pad Keel - By including a Concentric Pad Keel, a watercraft experiences a reduction in Slamming forces as well as generally improved Seakeeping and Seakindliness. | 11-19-2015 |
114290000 | Plural channels | 5 |
20110297069 | Boat hull strake design - A system for increasing the buoyancy of a boat operating in the water and to reduce the wetted-surface-friction of the water against the hull of the boat. The system includes a multiple of strakes attached to the bottom side of the boat. The strakes are instrumental in creating a multitude of bubbles on which the hull of the boat will ride which increases the efficiency of the power of the motor or motors powering the boat. The strakes are arranged in series along the hull of the boat and can increase in size from the bow of the boat to the stern. The strakes are also increasing in depth from the bow of the boat to the stern. The strakes may be attached to the boat as a retro-fit or may be added when manufacturing the boat. | 12-08-2011 |
20140041571 | SHIP - A ship has a water flow forming path ( | 02-13-2014 |
20140196655 | DISPLACEMENT HULL FORM NOT SUBJECT TO THE LIMITATION OF HULL SPEED - A displace hull with a shape that is both laterally symmetric and fore-to-aft symmetric is disclosed. The hull includes a pair of channels that help to manage a flow of water around the hull. The hull also includes sponsons and propellers that are located amidships on the port and starboard sides. | 07-17-2014 |
20150329179 | HYBRID MONOHULL PLANING VESSELS - A hull form design which incorporates bi-lateral semi-sponsons disposed on either side of a non-stepped V-shaped center hull section. The semi-sponsons extend the entire length of the hull form and comprise protrusions extending away from the center section. The semi-sponsons are delimited by longitudinal steps extending below the hull bottom an equal distance from the centerline on opposite sides of the hull. This design is a hybrid of conventional “V” hulls and catamarans and improves the roll and turn initiation time of convention monohull designs. | 11-19-2015 |
20160159436 | Flat-bottomed landing craft - This landing craft is capable of transporting heavy tracked and/or wheeled vehicles and troops from amphibious assault ships to beachheads or piers. A flat bottom has an unique design using Bernoulli's principle. The benefits are good speed, efficiency, durableness, and relatively economical and low noise. | 06-09-2016 |