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:
Mar. 07, 2000
Filed:
Aug. 28, 1998
Applicant:
Inventors:
Wilhelm Endres, Remetschwil, CH;
Hans Wettstein, Fislisbach, CH;
Assignee:
Asea Brown Boveri AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
416 / ; 416 / ; 416 / ;
Abstract
According to the invention, turbine blades are provided that have increased functional reliability, which is achieved in that the interior space (8) of the blade body (3) in the region of the suction-side wall (4), the pressure-side wall (5) and the trailing blade edge (7) has a closed steam-cooling system (9) having at least one cooling passage (10, 27, 28). An open cooling system (11) having at least one cooling passage (14, 15) and a plurality of film-cooling holes (22) which pass through the blade body (3) is formed in the region of the leading blade edge (6).