Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Reexamination Certificate
2004-10-28
2008-12-16
Zimmerman, John J. (Department: 1794)
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
C002S002500, C089S036010, C089S036020, C109S049500, C428S911000, C428S547000, C428S304400, C428S307700, C428S613000
Reexamination Certificate
active
07465500
ABSTRACT:
Methods and apparatus are provided for a shield to protect a surface from the impact of hyper-velocity projectiles. The apparatus comprises a foam material that is configured to cover the surface to be protected and is attached directly to that surface. A coating material is typically disposed on the outer surface of the foam material and may penetrate the foam material to a predetermined depth. The foam material and the coating material are selected to form a composite having predetermined values of sonic velocity, toughness, and thermal conductivity. The composite of foam material and coating material can be significantly lighter in weight than a metal shield having equivalent protective characteristics.
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“Duocel Aluminum Foam in Energy Absorption” found at http://www.ergaerospace.com/literature/energy.htm provided with an effective date of Dec. 4, 2003 as noted by the Wayback Machine at http://webarchive.org.
“Duocel Aluminum Foam” found at http://www.ergaerospace.com/duocel/aluminum.htm provided with an effective date of Dec. 2, 2003 as noted by the Wayback Machine at http://webarchive.org.
Delgado, Jr. Adon
Hoffman Nathan J.
Moriarty Michael P.
Pelletier Gerard D.
Sevener Kathleen M.
Austin Aaron
Fay III Theodore D.
Fields Kevin G.
The Boeing Company
Yee Duke W.
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