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:
Aug. 13, 2002
Filed:
May. 16, 2000
Alexander Velicki, Garden Grove, CA (US);
Other;
Abstract
A hollow core fan blade for a gas turbine engine, having stitched composite skins and substructure, is fabricated using a resin transfer molding approach which results in a damage tolerant and cost-efficient structure. The fan blade is comprised of a stitched composite cover that is in-turn stitched to a spar and rib-like substructure made of similar carbon fiber materials. A titanium leading edge, root section, and tip closeout member are added to the stitched carbon fibers and placed inside a forming die. Resin is infused, after which the blade assembly, having predetermined design characteristics, is cured by heating the forming die and pressurizing the part internally with a set of inflatable bladders which ultimately yields a rigid fan blade component.