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. 03, 2020
Filed:
Jan. 15, 2015
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Michael A. Weisse, Tolland, CT (US);
Kwan Hui, East Hartford, CT (US);
Larry Foster, South Glastonbury, CT (US);
Assignee:
RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/32 (2006.01); F04D 19/00 (2006.01); B32B 37/18 (2006.01); B32B 38/00 (2006.01); F01D 5/14 (2006.01); F01D 5/28 (2006.01);
U.S. Cl.
CPC ...
F04D 29/324 (2013.01); B32B 37/18 (2013.01); B32B 38/0004 (2013.01); F01D 5/147 (2013.01); F01D 5/282 (2013.01); F04D 19/002 (2013.01); B32B 2603/00 (2013.01); F05D 2220/36 (2013.01); F05D 2300/603 (2013.01); Y02T 50/672 (2013.01); Y02T 50/673 (2013.01); Y10T 156/1052 (2015.01);
Abstract
A fan blade having an opening on one side exposing one or more cavities, and a composite cover that fits over the opening, is provided. The composite cover has a variable thickness resulting from the layering of cover plies having different shapes, and is designed to achieve a lightweight fan blade having an optimal level of stiffness.