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US 8,776,705 B2Granted
Magnus rotor ship propulsion system
AssigneePoulsen Hybrid, LLC
InventorPeder Ulrik Poulsen
Life of this patent
Estimating the term…
Abstract
A watercraft includes a deck and no more than two flettner rotors having a height to diameter ratio of less than five. At least one of the flettner rotors is elevated above the deck such that individuals on the deck can walk underneath the flettner rotor. A portion of a footprint of at least one of the flettner rotors is suspended over an edge of the deck.
Claims23
A watercraft, comprising:
- a deck;
- and no more than two flettner rotors having a height to diameter ratio of less than five;
- at least one of said flettner rotors being elevated above said deck such that individuals on said deck can walk underneath said flettner rotor;
- and a portion of a footprint of at least one of said flettner rotors being suspended over a stern edge of said deck.
1 more element
A method of manufacturing a flettner rotor comprising the steps of:
- (a) assembling a cage;
- (b) rotating the cage 360 degrees relative to a supply of sheet;
- (c) wrapping a sheet around the cage as they are rotated relative to each other until the cage is substantially covered by the sheet material;
- and
- (d) mounting the sheet to the cage as it is wrapped around the cage.
2 more elements
A method of retrofitting a flettner rotor onto a ship, comprising the steps of:
- (a) providing a previously assembled ship;
- (b) manufacturing one or two flettner rotors separately from the ship, the flettner rotors having a height to diameter ratio of less than five;
- (c) installing a mounting platform off of a stern or bow end of the deck;
- and
- (d) installing at least one flettner rotor on the mounting platform in an elevated position such that individuals on the deck can walk underneath the flettner rotor and in a position wherein less than 50% of a footprint of the flettner rotor is over the deck.
2 more elements
Dependencies are inferred from the claim text.