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:
Jan. 24, 2012
Filed:
Feb. 21, 2008
Applicant:
Yann Pascal Raymond Rene Lebret, Maincy, FR;
Inventor:
Yann Pascal Raymond Rene Lebret, Maincy, FR;
Assignee:
SNECMA, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A casing supporting a series of stationary vanes between which there are disposed series of moving blades movable in rotation about a longitudinal axis in which the radially outer ends of the moving blades being close to the inside face of the casing is disclosed. The casing includes, at least over an annulus situated facing one of the series of moving blades, at least one casing treatment zone facing towards the blades and including a surface relief disturbance in the form of a groove of closed outline. The invention is applicable to controlling rotating separation in a turbomachine compressor.