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:
May. 24, 2016
Filed:
Oct. 05, 2012
Applicant:
Rolls-royce Aktiebolag, Kristinehamn, SE;
Inventors:
Anders Ottosson, Karlstad, SE;
Rikard Johansson, Hammarö, SE;
Assignee:
Rolls-Royce Aktiebolag, , SE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B63H 20/32 (2006.01); B63H 21/36 (2006.01); B63H 1/26 (2006.01); B63H 25/42 (2006.01); B63H 5/125 (2006.01);
U.S. Cl.
CPC ...
B63H 1/26 (2013.01); B63H 5/125 (2013.01); B63H 25/42 (2013.01);
Abstract
This invention relates to a device and method of reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster () having a rotary pod housing () with a substantially vertical slewing axis () and a fixed downwardly directed first fin () carried by the pod housing () abaft the slewing axis (), wherein said first fin is in the form of an elongated strip-shaped vane () and extends abaft the slewing axis () along the pod housing () to the vicinity of a rear end () thereof.