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:
Mar. 06, 2012
Filed:
Apr. 23, 2009
Mathieu Caucheteux, Creteil, FR;
Francois Maurice Garcin, Paris, FR;
Jean-pierre Francois Lombard, Pamfou, FR;
Nicolas Christian Triconnet, Saint Fargeau Ponthierry, FR;
Mathieu Caucheteux, Creteil, FR;
Francois Maurice Garcin, Paris, FR;
Jean-Pierre Francois Lombard, Pamfou, FR;
Nicolas Christian Triconnet, Saint Fargeau Ponthierry, FR;
SNECMA, Paris, FR;
Abstract
The invention relates to a turbomachine thermomechanical part forming a body of revolution about a longitudinal axis, and including at least one abradable ring for a labyrinth seal. In characteristic manner, the abradable ring is made up of angular sectors that present different stiffnesses between adjacent pairs of sectors. The invention is applicable to a compressor, a turbine, or to a rotor and stator assembly.