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:
Dec. 18, 2007
Filed:
Mar. 07, 2005
Denis Amiot, Dammarie les Lys, FR;
Anne-marie Arraitz, Nandy, FR;
Thierry Fachat, Moissy Cramayel, FR;
Alain Gendraud, Vernou la Celle S/Seine, FR;
Delphine Roussin, Antony, FR;
Denis Amiot, Dammarie les Lys, FR;
Anne-Marie Arraitz, Nandy, FR;
Thierry Fachat, Moissy Cramayel, FR;
Alain Gendraud, Vernou la Celle S/Seine, FR;
Delphine Roussin, Antony, FR;
Snecma Moteurs, Paris, FR;
Abstract
A device for tuning clearance at rotor blade tips in a gas turbine rotor, the device comprising at least one annular air flow duct that is mounted around the circumference of an annular casing of a stator of the turbine, the annular air flow duct being designed to discharge air onto the casing in order to modify the temperature thereof. A tubular air manifold is disposed around the air flow duct(s). There are also disposed an air feed tube to supply the tubular air manifold with air and an air pipe opening in the tubular air manifold and opening out into the air flow duct(s). The air pipe is provided with a balancing diaphragm for balancing the air flowing through the pipe.