The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2011
Filed:
Oct. 18, 2006
Barry N. Jaber, London, GB;
Alan Wignall, Buckinghamshire, GB;
John D. Martin, Buckinghamshire, GB;
Ultra Electronics Limited, Greenford, GB;
Abstract
A buoy is provided with first and second fixed hydrodynamic surfaces (). When the buoy is towed through water by a tether (), the first hydrodynamic surface () generates a downward force that reduces with increased speed through the water. The second hydrodynamic surface () generates an upward force that increases with increased speed through the water so that the buoy dives up to an upper critical speed through the water speed and rises beyond said upper critical speed through the water. The downward force of the first hydrodynamic surface () overcomes the buoyancy of the buoy at a lower critical speed through the water above, which the buoy dives. The hydrodynamic surface () comprises first fins () mounted on an outer casing () of the buoy and are spaced angularity and extend parallel to the center axis of the buoy which is substantially aligned with the direction of towing. The second hydrodynamic surface () comprises second fins () mounted on the outer casing arranged upstream of the first fins () in the direction of towing. The second hydrodynamic surface () is set at an angle of incidence such that it creates a stalled flow condition at said upper critical speed through the water.