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. 17, 1979
Filed:
Mar. 14, 1978
Applicant:
Inventors:
Alan R Stuart, Sketchley Manor, GB;
Brian S Stratford, Littleover, GB;
Assignee:
Rolls-Royce Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ; F16J / ;
U.S. Cl.
CPC ...
277 53 ; 277 74 ; 277134 ; 415110 ; 4151 / ; 60 3966 ;
Abstract
Turbine blade shrouds are sealed by injecting air on to the shroud immediately upstream of a shroud seal. This air serves two purposes: it creates a turbulent flow immediately upstream of the shroud seal, thus spoiling and reducing the leakage flow over the seal, and the hot gases which would otherwise leak over the seal are replaced by the cooler air, thus reducing energy wastage and improving S.F.C. (specific fuel consumption).