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. 22, 1983
Filed:
Aug. 12, 1981
Applicant:
Inventor:
William Abdel-Messeh, Beloeil, CA;
Assignee:
Pratt & Whitney Aircraft of Canada Limited, Lonqueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
416 / ; 416 95 ; 415115 ;
Abstract
A hollow blade for a turbine in a gas turbine engine comprising passageways in the hollow blade for passing a coolant therethrough and pairs of ridges having a chevron shape and being segmented form a channel therebetween with corresponding pairs on opposed side walls of the passageway such that each corresponding opposed pair has the chevron angle open in opposite directions relative to the longitudinal direction of the passageway. In another embodiment the opposed pairs of ridges are in the same phase, that is with the angle open in the same direction.