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:
Feb. 17, 2015
Filed:
Jun. 07, 2011
Augusto Pérez Pastor, Torrelondones, ES;
Julián Sánchez Fernández, Leganés, ES;
Fernando Esquivias Garía, Esquivias, ES;
Augusto Pérez Pastor, Torrelondones, ES;
Julián Sánchez Fernández, Leganés, ES;
Fernando Esquivias Garía, Esquivias, ES;
Airbus Operations, S.L., Getafe (Madrid), ES;
Abstract
A method of manufacturing 'T' shaped stringers for an aircraft whereby the 'T' shaped stringers have a stringer web and a stringer foot, the method comprising: a first step of hot-forming a carbon fiber laminate in order to achieve semi-stringers with an “L” shaped cross-section, a second step of placing together two hot-formed “L” shaped semi-stringers in order to form a “T” shaped stringer, a third step of co-bonding the resulting “T” shaped stringer on a cured skin with an adhesive line between them, and a fourth step of curing the obtained “T” shaped stringer inside a vacuum bag using invar alloy angles as curing tools. The invar alloy angles are cut at a radius area eliminating a part of the invar alloy angles covering the stringer foot in order to define an invar alloy piece having no foot.