John Howitt resumes & CV records
Resumes
John Howitt
Location:
Seattle, WA
John Howitt
John Stephen Howitt, 617730 Seward Park Ave, Seattle, WA 98118
John Howitt Phones & Addresses
7730 Seward Park Ave, Seattle, WA 98118 206-5254673
7728 Seward Park Ave S, Seattle, WA 98118
2126 86Th St, Seattle, WA 98103 206-5254673
Des Moines, WA
Entiat, WA
Mukilteo, WA
Auburn, WA
Lancaster, CA
Mentions for John Stephen Howitt
Publications & IP owners
Us Patents
Titanium Radius Filler For Use In Composite Interfaces
US Patent:
5833786, Nov 10, 1998
Filed:
May 16, 1996
Appl. No.:
8/648825
Inventors:
Douglas A. McCarville - Auburn WA
John S. Howitt - Seattle WA
Mark L. Younie - Seattle WA
John S. Howitt - Seattle WA
Mark L. Younie - Seattle WA
Assignee:
The Boeing Company - Seattle WA
International Classification:
B32B 708
US Classification:
156 92
Abstract:
A method for fabricating composite parts having improved pulloff strengths between portions of the composite part. In one embodiment, a sine wave spar is formed from two U-shaped channels having opposing flanges and a central web. The U-shaped channels are joined along the webs. The triangular gaps between the edges of the joined U-shaped channels are filled using a titanium radius filler that is configured to fit within the gaps. After the titanium radius filler is placed within the gaps, additional layers of composite material are placed over the titanium radius filler and the flanges of the U-shaped channels to form the caps of the I-beam. The resulting composite workpiece is then placed within appropriate tooling and cured within an autoclave. In other embodiments, the method of the invention is used to form spars, ribs, stringers, or bulkheads from composite materials.
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