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:
Jun. 07, 2016
Filed:
Feb. 27, 2012
Olivier Jacques Louis Lamicq, Poway, CA (US);
Fernando Manuel Ibarra Esparragoza, San Diego, CA (US);
Paul Francis Norton, San Diego, CA (US);
Jeremiah Wesley Key, San Marcos, CA (US);
Olivier Jacques Louis Lamicq, Poway, CA (US);
Fernando Manuel Ibarra Esparragoza, San Diego, CA (US);
Paul Francis Norton, San Diego, CA (US);
Jeremiah Wesley Key, San Marcos, CA (US);
Solar Turbines Incorporated, San Diego, CA (US);
Abstract
A rotor blade for a gas turbine engine has an airfoil, a base integrally joined to the airfoil, and a root integrally joined to the base and mountable in a slot in a rotor hub of the gas turbine engine. The root has a dovetail including at least one contact face that, when mounted, contacts a surface of the slot to retain the rotor blade in the hub. The root includes a neck between the base and the dovetail, and a groove in the neck for redirecting stress in the rotor blade. In certain embodiments, the groove is at a distance from the at least one contact face, has a length less than a length of the dovetail, and/or has an initial non-zero depth at the side of a trailing edge of the airfoil and tapers to a zero depth in the direction of the leading edge of the airfoil.