Protective ballistic panel having an interior hermetically seale

Details Protective ballistic panel having an interior hermetically seale Protective ballistic panel having an interior hermetically seale

1989-08-18

1991-10-22

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428 67, 428 76, 428259, 428911, 428 34, 428215, 428216, 428192, 428 69, 428 68, 4283144, 4283148, 428138, 428246, 428251, 428252, 428284, 428408, 428902, 2 2, 2 25, 2 44, 2102, 89 3602, 89 3605, B32B 310, F41H 102, F41H 504

Patent

active

050594672

ABSTRACT:
A protective ballistic panel includes a first-impact, front layer and a spaced rear layer each of which is made of a relatively tough, nonmetallic material. The front and rear layers are connected to one another at their respective peripheries by an intermediate peripheral strip made of an at least semi-elastic material such as formed polyurethane or rubber. The peripheral strip together with the front and rear layers define an enclosed hermetically sealed air space betweeen said front and rear layers. The front and rear layers are each of laminated construction and comprise plural plies of composite material such as Kevlar, glass fibers, ballistic nylon and graphite fibers. The protective capacity of the first-impact front layer can be increased by providing a plurality of Kevlar plies therein together with at least one intercalated ply of Mylar film, all of the plies of the front layer being connected together by a laminating compound or by rivets.

REFERENCES:
patent: 3567568 (1971-03-01), Windecker
patent: 3813281 (1974-05-01), Burgess et al.
patent: 4090005 (1978-05-01), Morgan
patent: 4200677 (1980-04-01), Bottini et al.
patent: 4229473 (1980-10-01), Elber
patent: 4312903 (1982-01-01), Molari, Jr.
patent: 4584228 (1986-04-01), Droste
patent: 4608717 (1986-09-01), Dunbavand
patent: 4622249 (1986-11-01), Bowser
patent: 4774724 (1988-10-01), Sacks

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