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US 8,944,869 B2Granted
Pre-nozzle for a drive system of a watercraft to improve the energy efficiency
Assigneebecker marine systems GmbH & Co. KG
InventorsDirk Lehmann, Friedrich Mewis
Life of this patent
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Abstract
A drive system for a watercraft has a water inlet opening, a water outlet opening, and a fin system. A propellerless pre-nozzle for the drive system is configured rotationally asymmetrically in order to further improve the drive efficiency.
Claims21
A pre-nozzle for a drive system of a watercraft, comprising:
- a water inlet opening;
- a water outlet opening;
- and
- a fin system disposed inside the pre-nozzle, such that the fin system is not arranged in the inlet region of the pre-nozzle, and wherein no propeller is disposed inside the pre-nozzle;
- characterized in that the pre-nozzle is configured to be rotationally asymmetrical.
2 more elements
Dependencies are inferred from the claim text.