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. 19, 2015
Filed:
Dec. 12, 2011
Mark Hancock, Southampton, GB;
Anton Bech, Ringkøbing, DK;
Rens Christiaan Verhoef, Ringkøbing, DK;
Adrian Gill, East Cowes, GB;
Karl Gregory, Cowes, GB;
Mark Hancock, Southampton, GB;
Anton Bech, Ringkøbing, DK;
Rens Christiaan Verhoef, Ringkøbing, DK;
Adrian Gill, East Cowes, GB;
Karl Gregory, Cowes, GB;
Vestas Wind Systems A/S, Aarhus N., DK;
Abstract
An elongate web is attached to the root end of a spar of a wind turbine rotor blade to provide additional support along the width of the blade. The root end is formed by a winding operation, and a recess is then cut into the surface of the spar. The recess is defined by a relatively large first, cylindrical surface, which is coaxial with the longitudinal axis of the root end, and a relatively small second, conical surface. A tapered end of the elongate web is attached within the recess of the root end using a layer of suitable adhesive and an array of pins. Resilient spacer elements are arranged within the recess so as to surround the pins. The large area of the cylindrical surface causes the tensile and compressive stresses which arise along the elongate web in use to be transmitted to the spar as shear stresses.