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:
Jan. 30, 2018
Filed:
Sep. 14, 2015
Applicant:
United Technologies Corporation, Hartford, CT (US);
Inventors:
Benjamin T. Fisk, East Granby, CT (US);
Tracy A. Propheter-Hinckley, Mancehster, CT (US);
Assignee:
United Technologies Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 11/12 (2006.01); F01D 5/14 (2006.01); F01D 9/04 (2006.01); F01D 5/20 (2006.01); F01D 1/02 (2006.01); B23P 15/02 (2006.01);
U.S. Cl.
CPC ...
F01D 11/122 (2013.01); F01D 1/02 (2013.01); F01D 5/147 (2013.01); F01D 5/20 (2013.01); F01D 9/04 (2013.01); B23P 15/02 (2013.01); F05D 2220/32 (2013.01); F05D 2240/307 (2013.01); F05D 2240/55 (2013.01); F05D 2250/283 (2013.01); F05D 2300/177 (2013.01); Y10T 29/49337 (2015.01);
Abstract
A gas turbine engine includes a plurality of airfoils that are circumferentially arranged to rotate about an engine central axis. Each of the airfoils includes a base and a free tip end. The tip end includes first and second porous abradable elements that are axially spaced apart. The first porous abradable elements of the airfoils circumferentially align with each other, and the second porous abradable elements of the airfoils circumferentially align with each other.