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. 13, 2011
Filed:
Dec. 21, 2007
Applicants:
Giuseppe Romani, Mississauga, CA;
Xiaoliu Liu, Mississauga, CA;
Paul Stone, Guelph, CA;
Bruce Fielding, Glen Williams, CA;
Inventors:
Giuseppe Romani, Mississauga, CA;
Xiaoliu Liu, Mississauga, CA;
Paul Stone, Guelph, CA;
Bruce Fielding, Glen Williams, CA;
Assignee:
Pratt & Whitney Canada Corp., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An internal heating arrangement for a centrifugal impeller for a gas turbine engine is provided having at least one heating passage extending through into the rotor for directing air bled from the rotor exit along the backface and forwardly through the impeller.