Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1975-09-08
1977-09-13
Robinson, Ellis
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
89 36A, 89 36R, 244121, 428218, 428273, 428302, 428290, 428430, 428431, 428480, 428482, 428474, 428911, B32B 702, B32B 1710, F41H 504, F41H 506
Patent
active
040483657
ABSTRACT:
Improved armor structure comprised of an assembly of stacked, plastic plates of a first density and a layer of plastic material of a second density different from the first density between each pair of adjacent plates, respectively. Each plate is comprised of a number of layers of reinforcing material, such as fiber glass material, embedded in a resin to form a monolithic construction. Each layer is comprised of a mat of suitable material, such as fiber glass, impregnated with a binder, such as polyester resin. The layer has a finite thickness generally less than the thickness of each plate. The outer plates of the stack have exposed outer surfaces free of additional structure. The difference in densities of the plates and the layers causes delamination at one or more of the interfaces therebetween when the shock wave of a projectile entering the assembly partially propagates through and is partially reflected by such interfaces so as to dissipate the energy of the projectile itself.
REFERENCES:
patent: 1777309 (1930-10-01), Hopkinson
patent: 2409645 (1946-10-01), Sawyer
patent: 2562951 (1951-08-01), Rose
patent: 2697054 (1954-12-01), Dietz
patent: 2778761 (1957-01-01), Frieder
Mc Gannon John L.
Robinson Ellis
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