Ordnance – Shields – Shape or composition
Reexamination Certificate
2006-07-18
2006-07-18
Johnson, Stephen M. (Department: 3641)
Ordnance
Shields
Shape or composition
C089S036050, C089S036080, C002S002500
Reexamination Certificate
active
07077048
ABSTRACT:
A momentum trap ballistic armor comprises an accelerating layer, a plug layer adjacent to the accelerating layer, and an energy absorbing layer. The plug layer includes an opening and at least one plug maintained within the opening. When a projectile impacts the accelerating layer, the plug is accelerated to the velocity of the projectile before the projectile perforates the plug, forming a projectile-plug combination. The energy absorbing layer is used to capture the projectile-plug combination. The accelerating layer is typically ceramic, the plug layer is typically metal, and the energy absorbing layer is typically ballistic cloth material.
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Cipparrone, Gabriele, “Modification of the Perforation Mechanism in the Ballistic Impact on Alluminum Plates”, Politecnico di Torino, Facoltá di Ingegneria, Corso di Laurea in Ingegneria Meccanica, pp. iii-ix; 1-59, Mar. 1999.
Anderson, Jr. Charles E.
Johnson Gordon R.
Orphal Dennis L.
Alliant Techsystems Inc.
Johnson Stephen M.
Orphal Dennis L.
Southwest Research Institude
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