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:
Jul. 15, 2014
Filed:
Mar. 25, 2009
Antoine Robert Alain Brunet, Moissy Cramayel, FR;
Olivier Stephane Domercq, Brie Comte Robert, FR;
Laurent Jablonski, Melun, FR;
Vincent Paul Gabriel Perrot, Maisons Alfort, FR;
Antoine Robert Alain Brunet, Moissy Cramayel, FR;
Olivier Stephane Domercq, Brie Comte Robert, FR;
Laurent Jablonski, Melun, FR;
Vincent Paul Gabriel Perrot, Maisons Alfort, FR;
SNECMA, Paris, FR;
Abstract
A casing for a turbomachine rotor wheel includes a plurality of circumferential grooves, each of substantially constant section, with the section areas of the circumferential grooves decreasing from upstream to downstream on going from the first groove to the last groove. By treating the casing in this way, the efficiency of the rotor wheel is optimized and its surge margin is improved.