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:
Nov. 18, 2014
Filed:
Jan. 30, 2012
Keppel Nyron Bharath, Cornwall, CA;
John Pietrobon, Outremont, CA;
Vincent Paradis, Montréal, CA;
Douglas Maccaul, Varennes, CA;
Keppel Nyron Bharath, Cornwall, CA;
John Pietrobon, Outremont, CA;
Vincent Paradis, Montréal, CA;
Douglas MacCaul, Varennes, CA;
Pratt & Whitney Canada Corp., Longueuil, QC, CA;
Abstract
A turbine vane ring has radially outer and inner annular shrouds defining therebetween an annular gaspath. Circumferentially spaced-apart airfoil vanes extend radially across the gaspath between the outer and the inner shrouds. The radially outer shroud has a circumferentially continuous cylindrical wall extending axially from a leading edge to a trailing edge. A set of circumferentially distributed stress relieving slots is defined in the leading edge of the cylindrical wall at locations adjacent to the leading edge of at least some of said airfoil vanes. The stress relieving slots extend radially through the cylindrical wall from the radially inner surface to the opposed radially outer surface thereof.