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:
Jan. 18, 2022
Filed:
Jan. 10, 2018
Siemens Energy Global Gmbh & Co. KG, Munich, DE;
Fathi Ahmad, Kaarst, DE;
Daniela Koch, Berlin, DE;
Markus Lempke, Mülheim, DE;
Thorsten Mattheis, Mülheim, DE;
Axel Podschwadek, Gladbeck, DE;
Radan Radulovic, Bochum, DE;
Anne Weidenmüller, Düsseldorf, DE;
Siemens Energy Global GmbH & Co. KG, Munich, DE;
Abstract
A method for producing a cavity in a blade platform of a blade, in particular of a turbine blade, as part of a blade-platform cooling system, wherein the method has the steps of: producing a first bore from a first platform lateral face in the direction of an opposite second platform lateral face, with a first opening in the first platform lateral face being created, and expanding the first bore in a fan-like manner by an electrical discharge machining method, in particular using a wire- or bar-form electrode, such that the first opening, created in the first step, of the first bore represents the starting point of the fan-like expansion. A blade is produced in particular with such a method.