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. 06, 1999
Filed:
Jul. 21, 1997
Kenneth Hall, Richterswil, CH;
Bruce Johnson, Baden-Dattwil, CH;
Bernhard Weigand, Waldshut-Tiengen, DE;
Pey-Shey Wu, Baden-Dattwil, CH;
Asea Brown Boveri AG, Baden, CH;
Abstract
A coolable blade (10) essentially comprises a blade root (11) and a blade body (1), which is composed of a pressure-side wall (6) and a suction-side wall (5). They are connected to one another essentially via a trailing-edge region (4) and a leading-edge region (3) in such a way that at least one hollow space (2) used as a cooling-fluid passage is formed, in which ribs (7) are arranged. At least one rib (7) is configured in such a way that it has an apex (9) and two legs (14, 15), the legs (14, 15) of the rib being bent at an acute angle (8) relative to a radial plane (13). It is especially advantageous to arrange these ribs in a hollow space of double triangular shape having acute-angled triangular points in the region of the leading edge and the trailing edge.