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:
Aug. 27, 2013
Filed:
Jul. 17, 2009
Vladimir Danov, Erlangen, DE;
Andreas Schröter, Anrode/Bieckenriede, DE;
Vladimir Danov, Erlangen, DE;
Andreas Schröter, Anrode/Bieckenriede, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A ship propulsion system for watercraft contains at least one propeller, by which a drive force can be created for the watercraft. The ship propulsion further contains an electric motor, the rotor of which is directly mechanically coupled to the at least one propeller via a shaft such that the at least one propeller may be brought into a respective rotating movement by a rotation of the rotor. In order to cool the rotor of the electric motor a thermosiphon is disposed in the shaft, and the propeller serves as a heat sink for a working medium of the thermosiphon.