Class / Patent application number | Description | Number of patent applications / Date published |
114140000 | KEELS | 16 |
20080289555 | Movable ballast in a sailing vessel - An external adjustable ballast system for keeled sailboats comprising a weight that is designed for low hydrodynamic drag, mounted through a beam to a shaft running down the leading edge of the fin keel. Turning the shaft moves the weight to optimize hull trim, both fore/aft and athwart ships, for a particular point of sail. If the weight and beam are shaped as a lifting body and mounted to the shaft such that it pivots as it rotates to optimize angle of attack, the dynamic balancing component can allow for a lighter weight. Ballast weight and beam can be raised or lowered to optimize performance for expected wind conditions. The leading edge of the fin keel is a rotatable non spherical shaft. When rotated, the shaft creates an asymmetric cross section which improves hydrodynamic efficiency of the keel. | 11-27-2008 |
20090165692 | Apparatus and Method to Optimize Sailing Efficiency - This invention provides improvements in the efficiency of a sailing vessel through the use of flaps, hydrofoils, or members on the keel of a sailing vessel. One or more are positioned at the top, or root of the keel of the vessel, which primarily generate a force in the windward direction to provide a counter-leeward drift force. One or more are located at the bottom, or tip of the keel of the vessel, which primarily generate a force in the leeward direction to provide a counter-heeling moment. Among other benefits, operation of these flaps, hydrofoils, or members during sailing increases the vessel's efficiency, in particular its velocity made good. Further, since they are mounted on one appendage, sailing vessels of a rudder and keel design can be equipped with counter leeward-drift and counter-heeling attributes without the need for additional appendages. | 07-02-2009 |
20090283024 | Battery Keel System and Method - A battery keel system for providing electrical power and ballast to a water vessel wherein the system comprises a keel including a cavity, at least one electrochemical cell and at least one electrical circuit extending from the electrochemical cell. The at least one electrochemical cell is positioned within the cavity, such that the electrochemical cell provides electrical power and ballast to the water vessel. | 11-19-2009 |
20110061579 | DYNAMIC FIN COMPRISING COUPLED FIN SECTIONS - A dynamic or aerodynamic fin comprising at least two parallel arranged fin sections. At least one fin section comprises a rotational axis for installing the fin section by a rotation shaft. An end stop is provided for stopping the rotational movement of the fin section to define an extreme position. In the extreme position the fin sections provide a substantially cambered shape to the fin. The dynamic fin is improved in that it comprises a pair of coupling elements. A first fin section is coupled to a second adjacent fin section by a pair of a first and second coupling elements. The first coupling element is complementary to the second coupling element. The first coupling element is part of, preferably integral, with the first fin section and the second coupling element is part of, preferably integral, with the second fin section. | 03-17-2011 |
20120103240 | WATERBORNE CRAFT AND FIN INCORPORATING AIR CONDUITS FOR DRAG REDUCTION - The invention comprises a waterborne craft having a hull, board or base, and a fin, keel, centreboard or the like. One or more air conduits exit the hull, board or base at or adjacent at least one side of the fin, keel or centreboard, or exit the fin, keel, or centreboard, excluding the leading edge of the fin, keel or centreboard in use, in a position such that the conduit in use provides or the conduits in use provide air to a position at or adjacent at least one side of the fin, keel or centreboard. | 05-03-2012 |
20130074754 | ANCHOR AND KEEL APPARATUS FOR HULL WITH CHANNEL - The present invention is directed to an apparatus that allows a boat to be anchored and keeled. The invention has a member that can rotate about a first axis from a stowed position to an anchored position. Or the members may be placed downwardly in the ground floor of the body of water, for keeling. The hull of the vessel has a channel for the rotation or movement of the member within the channel. | 03-28-2013 |
20130074755 | ANCHOR AND KEEL APPARATUS - The present invention is directed to an apparatus that allows a boat to be anchored and keeled. The invention has a member that can rotate about a first axis from a stowed position to an anchored position. Or the members may be placed downwardly in the ground floor of the body of water, for keeling. | 03-28-2013 |
20140000502 | FLOATING OFFSHORE PLATFORM AND CENTRALIZED OPEN KEEL PLATE | 01-02-2014 |
20140373769 | WATERCRAFT HULL - A hull for a watercraft has a port side, a starboard side, and a keel disposed between the port side and the starboard side. Each of the port and starboard sides has a first portion having a first deadrise angle, and a second portion having a second deadrise angle. The first portion is disposed laterally between the second portion and the keel. A first chine is connected to the first portion. The first portion is disposed laterally between the keel and the first chine. A second chine is connected to the second portion. The second portion is disposed laterally between the first chine and the second chine. The second chine is a soft chine. The first chine has a smaller radius of curvature than the second chine. | 12-25-2014 |
20160194055 | HIGH STABILITY LOW DRAG BOAT HULL | 07-07-2016 |
114141000 | Vertical adjustment | 3 |
20100218713 | IMPACT ABSORBING DROP KEEL - The present invention relates to a keel construction for a floating vessel, where a drop keel ( | 09-02-2010 |
20140026795 | RETRACTABLE KEEL APPARATUS - A retractable keel apparatus for a ship, in particular for a sailboat, including a lift device for a lowerable and retractable fin device having a fin ( | 01-30-2014 |
20160101836 | Floating Platform with an Articulating Keel Skirt - The present disclosure provides in at least one embodiment a rotatable keel skirt assembly on a rectangular-shaped keel pontoon. The rectangular-shaped keel pontoon reduces the maximum hull width by a significant percentage compared to a circular-shaped keel pontoon while maintaining the same hull motion performance. The rotatable keel skirt assembly allows the size of the pontoon to define the width of the hull during some fabrication phases of the platform, rather than the additional width of the keel skirt assembly. Thus, the outreach of the crane and other equipment can be effectively used as if the keel skirt assembly was not present. After fabrication, the hull can be moved away from the quayside and the keel skirt assembly can be rotated into position for service. Various systems and methods are disclosed for articulating the keel skirt assembly about the hull. | 04-14-2016 |
114143000 | Rocking | 3 |
20100116188 | KEEL MECHANISM FOR SAILBOATS | 05-13-2010 |
20100116189 | SAILBOAT WITH A CANTING BALLAST SYSTEM - A sailboat includes a canting ballast system configured to rotate with respect to a hull. The sailboat includes the hull having a port side and a starboard side, and an external surface. An arcuate member is coupled to the starboard and port sides extending above the hull. The canting ballast system includes at least one rotatable member coupled to the external surface and to the arcuate member. The system further includes a first strut having a first end and a second end, and a second strut having a first end and a second end wherein the first ends are coupled to the rotatable member. The system also includes at least one ballast. The second ends are coupled to the ballast such that an angle is defined between the first and second struts. The sailboat also includes a drive system coupled to the canting ballast system wherein the at least one drive system is configured to rotate the canting ballast system with respect to the hull. | 05-13-2010 |
20140137783 | JET BOAT INCLUDING ARTICULATING KEEL - A jet boat including a hull including a keel extending in a fore and aft direction of the jet boat, at least one jet propulsion nozzle mounted to a rear of the hull, and an articulating keel attached at the rear of the hull, the articulating keel arranged to pivot about a pivot axis extending vertically or substantially vertically. A bottom surface of the articulating keel does not extend below a bottom surface of the keel when the articulating keel is parallel or substantially parallel to the fore and aft direction of the jet boat. | 05-22-2014 |