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. 08, 2018
Filed:
Apr. 12, 2013
Alenia Aermacchi S.p.a., Rome, IT;
Sabato Inserra Imparato, Naples, IT;
Pietrantonio Cerreta, Naples, IT;
ALENIA AERMACCHI S.p.A., Roma, IT;
Abstract
A vacuum bag () is placed around the inner forming surface (IML) of an inner mandrel with radially retractable sectors () having parallel longitudinal slots () with composite stringers () in the slots (). An inner support () in each stringer is covered by an impermeable tubular bag (). A composite skin () is laminated around the stringers (), the coated supports () and the inner forming surface (IML). An outer curing tool () closes around the skin () defining an fuselage barrel outer forming surface (OML), leaving an annular gap (G) between the skin outer surface () and the outer forming surface (OML). Vacuum is applied between the vacuum bag () and the outer tool (), enlarges the uncured barrel diameter, releasing the barrel from the inner mandrel () and bringing the skin outer surface () into contact with the outer tool inner surface (IML).