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:
Jun. 08, 2004
Filed:
Sep. 24, 2001
Jay Morrison, Oviedo, FL (US);
Steven C. Butner, Powey, CA (US);
Christian X. Campbell, Orlando, FL (US);
Harry A. Albrecht, Hobe Sound, FL (US);
Yevgeuiy Shteyman, West Palm Beach, FL (US);
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Abstract
A multi-layer ceramic matrix composite structure ( ) having a plurality of fiber-reinforced cooling passages ( ) formed therein. The cooling passages are formed by the removal of a fugitive material ( ). The fugitive material is part of a wrapped fugitive material structure ( ) containing a layer of reinforcing ceramic fibers ( ) that is used to lay-up the multi-layer structure. An intermediate layer of ceramic fabric may be placed alternately over and under the wrapped fugitive material structure to separate the cooling passages into alternating upper ( ) and lower ( ) cooling passages. The transversely oriented fibers surrounding the cooling passages serve to increase the interlaminar strength of the structure when compared to prior art designs. An airfoil member ( ) incorporating such reinforced integral cooling passages ( ) is provided.