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:
Nov. 05, 2019
Filed:
Apr. 22, 2016
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Andrew Hewitt, Derby, GB;
Matthew Hancock, Derby, GB;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/28 (2006.01); F01D 5/20 (2006.01); F01D 11/12 (2006.01); F01D 5/14 (2006.01);
U.S. Cl.
CPC ...
F01D 5/288 (2013.01); F01D 5/147 (2013.01); F01D 5/20 (2013.01); F01D 11/122 (2013.01); F05D 2220/32 (2013.01); F05D 2230/90 (2013.01); F05D 2240/307 (2013.01); F05D 2300/171 (2013.01); F05D 2300/174 (2013.01); F05D 2300/175 (2013.01); F05D 2300/177 (2013.01); F05D 2300/2282 (2013.01); F05D 2300/6032 (2013.01);
Abstract
A gas turbine engine component includes a rotor blade having a squealer tip comprising a projecting lip, the rotor blade further having a raised rim running along both edges of each projecting kip of the squealer tip, and an abrasive coating formed of hard particles embedded in a retaining matrix covering a tip region of the rotor blade within an area bounded by the raised rim. The raised rim has a height of between 50% and 75% of a mean diameter of the hard particles.