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. 02, 2002
Filed:
Jul. 05, 2000
Applicant:
Inventors:
Stephen N Dancer, Derby, GB;
Alec G Dodd, Derby, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 1/108 ;
U.S. Cl.
CPC ...
F01D 1/108 ;
Abstract
The shroud ( ) of a shrouded turbine blade ( ) has a convex leading edge ( ) the apex of which extends towards the trailing edge of the shroud ( ) of an adjacent, preceding guide vane. The extension enables the containment of a reverse flow of high pressure gas from the juncture of the blade aerofoil and shroud, until the pressure has dropped sufficiently to avoid nullifying gas flow from the corresponding portion of the guide vane ( ) and thereby reduces excessive hot gas leakage from between the opposing shrouds edges.