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:
Oct. 28, 2008
Filed:
Apr. 13, 2004
Vesa Korhonen, Espoo, FI;
Risto Pakaste, Helsinki, FI;
Antti Ruohonen, Helsinki, FI;
Petri Sullström, Kirkkonummi, FI;
Panu Virolainen, Espoo, FI;
Petteri Ämmälä, Baden-Dättwil, CH;
Matti Lehti, Espoo, FI;
Vesa Korhonen, Espoo, FI;
Risto Pakaste, Helsinki, FI;
Antti Ruohonen, Helsinki, FI;
Petri Sullström, Kirkkonummi, FI;
Panu Virolainen, Espoo, FI;
Petteri Ämmälä, Baden-Dättwil, CH;
Matti Lehti, Espoo, FI;
ABB Oy, Helsinki, FI;
Abstract
The invention relates to a method and an apparatus to control a propulsion drive. The propulsion drive comprises at least one first propeller drive, which rotates the first propeller and by which the propulsion power and/or rotating speed of the first propeller, and a second propeller drive, by which the second propeller is rotated and controlled. According to the invention the propulsion drive is controlled by a single control command, whereby it is generated from the control command a first control signal, by which the first propeller drive is controlled, and a second signal, by which the second propeller drive is controlled.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile