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. 06, 2009
Filed:
Nov. 13, 2002
Henrik Stiesdal, Odense C, DK;
Peder Bay Enevoldsen, Vejle, DK;
Kaj Johansen, Aabybro, DK;
Jens Jørgen Ø Kristensen, Nibe, DK;
Michael Nørlem, Svenstrup, DK;
Martin Winther-jensen, Haslev, DK;
Henrik Stiesdal, Odense C, DK;
Peder Bay Enevoldsen, Vejle, DK;
Kaj Johansen, Aabybro, DK;
Jens Jørgen Ø Kristensen, Nibe, DK;
Michael Nørlem, Svenstrup, DK;
Martin Winther-Jensen, Haslev, DK;
Bonus Energy A/S, Brande, DK;
Abstract
A method for making a windmill blade is provided, whereby problems with glue joints and with exposure of the workers to environmentally hazardous substances are avoided. This is effected by making the windmill blade in a closed mold with a mold core () inside mold parts () for formation of a mold cavity (), in which fiber material () and core material () are placed. After applying vacuum to the mold cavity (), matrix material () is injected via a filling pipe (), which is placed at a downwardly oriented side edge of the blade during the filling. Hereby is established a flow front () which is used for indicating complete filling when this reaches the trailing edge of the blade and penetrates out through overflow apertures.