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:
Oct. 01, 2013
Filed:
Jun. 17, 2008
Hauke Lengsfeld, Helmste, DE;
Christian Luebbering, Gruenendeich, DE;
Hauke Lengsfeld, Helmste, DE;
Christian Luebbering, Gruenendeich, DE;
Airbus Operations GmbH, Hamburg, DE;
Abstract
The present invention provides a method as well as a tool () for producing a T-stringer, in particular in the aircraft and spacecraft sector. The method is characterized by two lay-up strips () being arranged on top of one another, wherein areas () of the lay-up strips () corresponding to the stringer foot () that is to be formed, are spaced apart from one another by means of separation films () and areas () of the lay-up strips () corresponding to a stringer web () come into direct contact with one another, in particular, forming a material bond. In a further method step, the lay-up strips () are clamped at the areas () corresponding to the stringer web () that is to be formed. In an even further step, the areas () corresponding to the stringer foot () that is to be formed are folded open in opposite directions () by means of a folding-open mandrel (), and by means of a pressing roller () the areas () are pressed against corresponding pressing surfaces () of the clamping device () such that the areas () are properly flush. Finally, the folded lay-up strips () are cured to form the T-stringer that is to be produced. The method according to the invention has the advantage over the known method for producing T-stringers that a smaller number of steps is required to produce the T-stringer and can be automated easily.