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:
Aug. 07, 2018
Filed:
Mar. 28, 2014
Applicant:
Airbus Helicopters Deutschland Gmbh, Donauworth, DE;
Inventors:
Rupert Pfaller, Riemerling, DE;
Wolfgang J. Wagner, Inning Am Holz, DE;
Martin Ortner, Unterhaching, DE;
Assignee:
AIRBUS HELICOPTERS DEUTSCHLAND GMBH, Donauworth, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/33 (2006.01); B32B 5/12 (2006.01); B32B 5/26 (2006.01);
U.S. Cl.
CPC ...
B64C 27/33 (2013.01); B32B 5/12 (2013.01); B32B 5/26 (2013.01); B32B 2307/542 (2013.01); B32B 2603/00 (2013.01);
Abstract
In a rotary wing aircraft a bar () of composite matrix material has a longitudinal axis () perpendicular to a cross section with upper and lower surfaces (). At least one torsion box () comprises an upper and a lower layers () respectively offset of a longitudinal axis () and of the upper and the lower surfaces (), said upper and lower layers () being laterally joint, while cross sections are filled with the first group of fibers extending essentially parallel to the longitudinal axis ().