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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Application No. | Application Title | Issue Date |
| 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 centreboa... | 05/03/2012 |
| 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 ... | 03/17/2011 |
| 20100303634 | FLUID DYNAMIC SECTION HAVING ESCAPELET OPENINGS FOR REDUCING INDUCED AND INTERFERENCE DRAG, AND ENERGIZING STAGNANT FLOW A fluid dynamic section provides one or more fixed size escapelets through a foil body to reduce the induced and interference drag caused by trailing vortices and similar wake turbulence. The escapelets, which can be provided in both aerodynamic and hydrodynamic structu... | 12/02/2010 |
| 20090301376 | PLANING PONTOON TUBE An improved water tight, chambered planing pontoon assembly incorporates a hollow shell with a cross sectional shape in the form of an upper portion and lower portion. The upper portion of the shape is generally semi-cylindrical extending downward and terminates with op... | 12/10/2009 |
| 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 ele... | 11/19/2009 |
| 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... | 07/02/2009 |
| 20090158983 | Yacht and Ballast Assembly Therefor A yacht having an adjustable ballast assembly comprising a ballast, an elongated hollow ballast guide mounted to the hull of the watercraft to extend transversely of the hull, the ballast being located within the guide and there being means for selectively moving the ba... | 06/25/2009 |
| 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 for... | 11/27/2008 |
| 20070000422 | Finkeel for boats with foldable leeboards The invention relates to a finkeel (2) for boats, having of a fixed part (3) attached to the hull (1) and a movable part comprising two leeboards (4, 5) that can be orientated in an independent manner. According... | 01/04/2007 |
| 20060035543 | SURFBOARD FIN MOUNTING SYSTEM Provided is a system including a fin box that allows surboard fins to be installed, removed or adjusted to the front or rear of the board within the box and a means for installing the box on the surfboard. More importantly, the fins can be installed in the fin box, and ... | 02/16/2006 |
| 20060027156 | Flexible keel and fiting therefor Water craft or amphibious vehicle includes a hull 12 fitted with at least one elongate longitudinal keel; which may be extruded from rubber. The keel has at least one mounting formation, to engage with channel formation. The keel may be mounted directly into hull... | 02/09/2006 |
| 20050172878 | Double flexible keel Water Craft or amphibious vehicle, includes a hull fitted with at least one elongate longitudinal keel; which may be extruded from natural or synthetic rubber. The keel has base, and at least two dependent keel members, which in steady state conditions slant downwards t... | 08/11/2005 |
