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:
Sep. 24, 2013
Filed:
May. 16, 2008
Lyle R. Deobald, Shoreline, WA (US);
John D. Morris, Seattle, WA (US);
Karl B. Lee, Kirkland, WA (US);
Jeffery L. Marcoe, Bellevue, WA (US);
Mark C. Iden, Burien, WA (US);
Christopher G. Harris, Auburn, WA (US);
Lyle R. Deobald, Shoreline, WA (US);
John D. Morris, Seattle, WA (US);
Karl B. Lee, Kirkland, WA (US);
Jeffery L. Marcoe, Bellevue, WA (US);
Mark C. Iden, Burien, WA (US);
Christopher G. Harris, Auburn, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A composite stiffener is fabricated using preforms of laminated, unidirectional composite tape. The stiffener includes a void that is reinforced by a filler wrapped with a structural adhesive. The surfaces of the preforms surrounding the void include a layer of composite fabric which is bonded to the filler by the adhesive, thereby increasing the toughness of stiffeners around the void and improving pull-off strength of the stiffener.