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. 23, 2013
Filed:
Apr. 15, 2009
Olivier Stephane Domercq, Brie Comte Robert, FR;
Vincent Paul Gabriel Perrot, Maisons-Alfort, FR;
Jean-pierre Poitevin, Chartrettes, FR;
Olivier Stephane Domercq, Brie Comte Robert, FR;
Vincent Paul Gabriel Perrot, Maisons-Alfort, FR;
Jean-Pierre Poitevin, Chartrettes, FR;
SNECMA, Paris, FR;
Abstract
A turbomachine compressor including variable-pitch vanes, each including an airfoil connected via a plate of circular outline to a pivot guided to pivot in an orifice in a casing, the plate including an air feed duct including one end for communication with a passage formed in the casing when the vane is in a first position, so as to inject air into the annulus of the compressor upstream from the vane, and to be closed by the casing when the vane is in a second position.