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:
Sep. 02, 2003
Filed:
Feb. 06, 2002
Kaj Olsen, Lystrup, DK;
Flemming Møller Larsen, Christiansfeld, DK;
Peter Grabau, Kolding, DK;
John Ellermann Jespersen, Fredericia, DK;
LM Glasfiber A/S, Lunderskov, DK;
Abstract
Wind turbine blade comprises a first ( ) and a second ( ) electric conductor extending in the longitudinal direction of the blade ( ), and one or more electric heating elements ( ) for heating the surface of the blade. The heating elements ( ) are connected to the first and the second electric conductor. At its tip the wind turbine blade ( ) is provided with a lightning receptor for catching lightning, and the lightning receptor ( ) is electrically connected to a third ( ) conductor earthed so as to be able to carry the current from a stroke of lightning to the earth. The first and the second conductor are connected to the lightning receptor through spark gaps adjacent said lightning receptor and connected to earth through spark gaps adjacent the blade root.