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:
May. 16, 2017
Filed:
Jun. 21, 2012
James L. Deal, Hebron, CT (US);
John J. Schirra, Ellington, CT (US);
Lee Drozdenko, Bristol, CT (US);
William R. Graves, Manchester, CT (US);
James O. Hansen, Glastonbury, CT (US);
Michael A. Weisse, Tolland, CT (US);
Thomas J. Watson, South Windsor, CT (US);
James L. Deal, Hebron, CT (US);
John J. Schirra, Ellington, CT (US);
Lee Drozdenko, Bristol, CT (US);
William R. Graves, Manchester, CT (US);
James O. Hansen, Glastonbury, CT (US);
Michael A. Weisse, Tolland, CT (US);
Thomas J. Watson, South Windsor, CT (US);
United Technologies Corporation, Farmington, CT (US);
Abstract
A fan blade comprises an airfoil portion and a sheath portion. The sheath portion has a sheath head section, a first sheath flank, and a second sheath flank, both flanks extending chordwise from the forward sheath section. The sheath portion is bonded to the airfoil portion such that the sheath head section covers the forward airfoil edge, defining a blade leading edge. The first sheath flank covers a portion of the first airfoil surface proximate the airfoil forward edge, jointly defining a blade suction surface. The second sheath flank covers a portion of the second airfoil surface proximate the airfoil forward edge, jointly defining a blade pressure surface. The first metallic material is an aluminum alloy containing between about 0.5 wt % and about 3.0 wt % of lithium.