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:
Sep. 21, 2010
Filed:
Feb. 15, 2007
Douglas A. Keller, Kalamazoo, MI (US);
Douglas A. Keller, Kalamazoo, MI (US);
Siemens Energy, Inc., Orlando, FL (US);
Abstract
A ceramic seal element () for use in a turbo-machine comprises a first, rigid portion () comprising ceramic fibers () bound within a ceramic matrix binder (), a second, flexible portion () comprising ceramic fibers (), and a third, rigid portion () comprising ceramic fibers () bound within a ceramic matrix binder (). Ceramic fibers () retain a desired flexibility because they are not bound in ceramic matrix binder. In some embodiments the ceramic fibers () are stacked as horizontally disposed layers (). Also, the fibers () of any layer () comprise bundles of fibers wherein some of the bundles extend continuously across portions (). An alternative sealing element () comprises a first, rigid portion () comprising ceramic fibers () that are bound within a ceramic matrix binder (), and a second, flexible portion () that comprises ceramic fibers () that retain a desired flexibility. Methods of manufacture are disclosed.