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:
Jan. 13, 2015
Filed:
Oct. 04, 2012
Siemens Aktiengesellschaft, München, DE;
Karsten Ahnert, Chemnitz, DE;
Thomas Demuth, Limbach-Oberfrohna, DE;
Steffen Hellmich, Chemnitz, DE;
Markus Mauersberger, Chemnitz, DE;
Andres Männer, Chemnitz, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
A pitch system of a wind energy system includes an emergency energy store for moving a rotor blade into a safety position in the event of the failure of an external energy supply. The emergency energy store can be tested, for example to assess aging, by supplying electrical energy to an actuating device configured to set a pitch angle of a rotor blade even in a normal operating mode of the wind energy system temporarily exclusively from the emergency energy store. This configuration ensures reliable operation of a wind energy system.