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:
Apr. 24, 2018
Filed:
Dec. 13, 2012
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/14 (2006.01); F03D 1/06 (2006.01);
U.S. Cl.
CPC ...
F01D 5/141 (2013.01); F03D 1/0675 (2013.01); F05B 2240/122 (2013.01); F05D 2240/122 (2013.01); F05D 2240/304 (2013.01); F05D 2250/18 (2013.01); F05D 2250/181 (2013.01); F05D 2250/182 (2013.01); F05D 2250/183 (2013.01); F05D 2250/184 (2013.01); F05D 2250/191 (2013.01); F05D 2260/961 (2013.01); Y02E 10/721 (2013.01);
Abstract
A blade for a rotating machine, particularly for a gas turbine engine, has a leading edge and a trailing edge joined by pressure and suction surfaces. The trailing edge has a serrated form including a first periodic variation and a second periodic variation of higher frequency and lower amplitude than the first periodic variation.