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. 05, 2015
Filed:
Aug. 21, 2012
Jussi Tamminen, Lappeenranta, FI;
Tero Ahonen, Lappeenranta, FI;
Jero Ahola, Lappeenranta, FI;
Markku Niemelä, Laapeenranta, FI;
Jussi Tamminen, Lappeenranta, FI;
Tero Ahonen, Lappeenranta, FI;
Jero Ahola, Lappeenranta, FI;
Markku Niemelä, Laapeenranta, FI;
ABB Oy, Helsinki, FI;
Abstract
A method for determining a change in a mass of a fan impeller. The method includes inducing a torque to the fan impeller and determining a change in the angular speed of the fan impeller, induced by the torque. A value for a first parameter representing a present mass of the fan impeller is determined on the basis of the change in the angular speed and the torque. The change in the mass is then determined on the basis of the first parameter and a second parameter representing the reference mass of the fan impeller.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile