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:
Dec. 14, 2004
Filed:
Jan. 11, 2002
Applicant:
Inventors:
Paul Murray, Venegono Superiore, IT;
Massimo Battini, Varese, IT;
Assignee:
Aermacchi S.p.A., Venegono Superiore-Varese, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 3/12 ;
U.S. Cl.
CPC ...
B32B 3/12 ;
Abstract
An acoustic board with an improved composite structure ( ), suitable for reducing the sound of aircraft engines, wherein an upper layer consists of a fabric ( ) having a high sensitivity to sound velocity and a supporting sheet ( ) having a certain porosity; the upper layer is combined, in turn, with an intermediate honeycomb layer ( ) and with a lower layer ( ) of the conventional type.