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. 01, 2010
Filed:
Aug. 04, 2006
Applicant:
Guy David Snowsill, Derby, GB;
Inventor:
Guy David Snowsill, Derby, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Assembly of segmented seals can be problematic in areas of limited space for an introductory tapered mandrel and where there are the problems with damage to the seal surfaces. By the present method and arrangement, a seal formed from segmentsis expanded to an expanded state and then retained at that state by the use of a sacrificial materialin the gapsbetween the segmentsopened by expansion. The sacrificial materialis typically a low melting temperature wax and so is removed when the seal arrangement reaches its operating temperature.