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. 14, 1997
Filed:
Sep. 14, 1995
Wolfgang Krueger, Reichertshausen, DE;
MTU Motoren- und Turbinen-Union Muenchen GmbH, Munich, DE;
Abstract
A rotor of a turbomachine includes blades having an improved blade root configuration for anchoring and centering the blade roots in axial slots of the rotor disk. Each blade root includes two portions or sections, namely a serrated section that has a single bilaterally uniformly shaped serration, and a terminal portion that has rounded surfaces and a narrower cross-section than the serrated root section. The serrated section provides anchoring against centrifugal forces. The terminal portion provides the predominant centering effect, for which it is radially movably received and located in a recess provided in the bottom of the slot. The special root configuration substantially avoids misfit and centering problems associated with manufacturing variances, whereby the blades and blade roots can be made of lightweight engineering materials.