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:
Aug. 23, 2005
Filed:
Apr. 16, 2002
Stefan Beichl, Herrsching, DE;
Wilhelm Graebeldinger, Munich, DE;
Alexander Rauschmeier, Munich, DE;
Stefan Beichl, Herrsching, DE;
Wilhelm Graebeldinger, Munich, DE;
Alexander Rauschmeier, Munich, DE;
MTU Aero Engines, GmbH, Munich, DE;
Abstract
An arrangement for a non-hermetic seal between a stator and a rotor of a turbomachine in the root region of guide blades belonging to the stator. The arrangement includes a brush sealing ring which is mounted on the guide blades via a spoke centering means and whose bristles together with a rotating sealing surface form a fluid barrier which is permeable in a defined manner. On the sealing side of lower pressure, a supporting ring for the bristles is arranged at a slight distance from the rotating sealing surface, and this supporting ring is integrally connected to the guide blade roots and can be segmented by parting seams. The spoke centering means is permeable to pressure, as a result of which the brush sealing ring is pressure-relieved axially, with the exception of the bristle area between the sealing surface and supporting ring.