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. 21, 2007
Filed:
Jan. 21, 2005
Jay A. Morrison, Oviedo, FL (US);
Gary B. Merrill, Orlando, FL (US);
Steven James Vance, Orlando, FL (US);
Harry A. Albrecht, Hobe Sound, FL (US);
Yevgeniy Shteyman, West Palm Beach, FL (US);
Jay A. Morrison, Oviedo, FL (US);
Gary B. Merrill, Orlando, FL (US);
Steven James Vance, Orlando, FL (US);
Harry A. Albrecht, Hobe Sound, FL (US);
Yevgeniy Shteyman, West Palm Beach, FL (US);
Siemens Power Generation, Inc., Orlando, FL (US);
Abstract
An airfoil () formed of a plurality of pre-fired structural CMC panels (). Each panel is formed to have an open shape having opposed ends () that are free to move during the drying, curing and/or firing of the CMC material in order to minimize interlaminar stresses caused by anisotropic sintering shrinkage. The panels are at least partially pre-shrunk prior to being joined together to form the desired structure, such as an airfoil () for a gas turbine engine. The panels may be joined together using a backing member (), using flanged ends () and a clamp (), and/or with a bond material (), for example.