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:
Jun. 29, 2010
Filed:
Nov. 28, 2007
Applicant:
Lutz Kerber, Rheine, DE;
Inventor:
Lutz Kerber, Rheine, DE;
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F03D 7/00 (2006.01); H01M 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An emergency pitch drive unit for a wind turbine comprises: an electrical motor arranged for adjusting the pitch angle of a wind turbine rotor blade; an emergency power supply unit for supplying electrical power to the motor; and a controller configured for controlling, in the event of a power failure. The motor to adjust the pitch angle uses the electrical power from the emergency power supply unit. The emergency power supply unit comprises a fuel cell.