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:
Feb. 18, 2014
Filed:
Oct. 08, 2009
Christopher Sellars, Derby, GB;
Glen Pattinson, Derby, GB;
John T Gent, Derby, GB;
Rolls-Royce, PLC, London, GB;
Abstract
A seal () between a compressor rotor blade () and compressor casing () comprises an abradable structure () on the compressor casing (). The abradable structure () comprises a metallic foam () having pores (). The metallic foam () has a first a region () and a second region (). The first region () of the metallic foam () is arranged adjacent to the compressor casing () and the second region () of the metallic foam () is spaced from the compressor casing () by the first region () of the metallic foam (). The pores () of the second region () of the metallic foam () contain an abradable material () and the pores () of the first region () of the metallic foam () do not contain an abradable material.