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:
Mar. 02, 2004
Filed:
Feb. 26, 2001
Chin-Jye Yu, Newark, DE (US);
Terry Dennis Claar, Newark, DE (US);
Harald H. Eifert, Hockessin, DE (US);
Fraunhofer USA, Inc., Plymouth, MI (US);
Abstract
In a multi-layer armor system ( ), useful for military vehicles, a metallic foam is provided as the shock energy-absorbing element. In a typical arrangement, the metallic foam shock-absorbing element ( ) is sandwiched between a high strength strike plate ( ) and a backing plate ( ). Typically, the backing plate is a highly deforming metal, such as titanium, aluminum, or steel. However, the backing plate may comprise one or more layers of metal, ceramic or polymer-based composites. The high strength strike plate may be ceramic or metal. The shock-absorbing element is preferably a closed-cell metal foam with a high porosity that is effective in containing rearward deformation of the strike plate from a projectile strike. In a preferred embodiment, the shock-absorbing element is an aluminum foam with a porosity of 80 percent by volume.