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. 30, 2012
Filed:
Jan. 14, 2010
Jean-baptiste Arilla, Lanne, FR;
Pierre Michel Baude, Nay, FR;
Stephane Didier Durand, Saint Vincent, FR;
Isabelle Germaine Claude Ladeveze, Nousty, FR;
Jean-Baptiste Arilla, Lanne, FR;
Pierre Michel Baude, Nay, FR;
Stephane Didier Durand, Saint Vincent, FR;
Isabelle Germaine Claude Ladeveze, Nousty, FR;
Turbomeca, Bordes, FR;
Abstract
The soundproofed exhaust duct for a turbine engine comprises a perforated inner shell defining a flow passage, and a solid outer shell, the inner and outer shells defining between them a space that is closed at the upstream and downstream ends of said space. A core extends between the inner and outer shells at a distance therefrom, and contains at least one sound energy dissipating layer made up of hollow beads that are held against one another. A frame with upstream and downstream portions connected together by longitudinal members supports the core and partitions it into a plurality of boxes that are filled with hollow beads that are held between perforated textures, the frame being secured to the outer shell and/or to the inner shell via at least one of its upstream and downstream portions.