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:
Feb. 07, 2006
Filed:
Jan. 26, 2004
Michael A. Weisse, Tolland, CT (US);
William D. Owen, Windsor, CT (US);
Christopher Mark Palazzini, Windsor, CT (US);
Daniel J. Whitesell, Windsor, CT (US);
Michael A. Weisse, Tolland, CT (US);
William D. Owen, Windsor, CT (US);
Christopher Mark Palazzini, Windsor, CT (US);
Daniel J. Whitesell, Windsor, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming operation. In one embodiment, contiguous cavities are formed around freestanding ends of the ribs to reduce the number of cavities required. The freestanding end of each rib is flared such that it has a larger width than the rest of the rib. The cavity extends continuously around the free, flared end of the rib.