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:
Oct. 20, 2020
Filed:
Dec. 13, 2018
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Daniel A. Bales, Avon, CT (US);
Michael A. Weisse, Tolland, CT (US);
Assignee:
RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/14 (2006.01); F01D 5/18 (2006.01); F16K 15/04 (2006.01); F01D 5/28 (2006.01);
U.S. Cl.
CPC ...
F01D 5/187 (2013.01); F01D 5/147 (2013.01); F01D 5/28 (2013.01); F16K 15/044 (2013.01); F05D 2230/232 (2013.01); F05D 2260/201 (2013.01);
Abstract
Disclosed is a fan blade for a gas turbine engine, including: an airfoil, a cavity formed in the airfoil, a cover configured to cover the cavity, the cover when secured to the airfoil encloses the cavity in the airfoil, a conduit extending from the cavity to an exterior surface of the fan blade, and a check valve located in the conduit, the check valve configured to regulate an internal pressure of the cavity when the cover is secured to the airfoil.