초록 ▼

A laminar system for constructing doors and window shutters, to harden the inside of walls and to greatly increase the penetration resistance of structures. The sketch illustrates the material system and gives representative material thicknesses. The laminar system comprises an outer steel sheet, ha

A laminar system for constructing doors and window shutters, to harden the inside of walls and to greatly increase the penetration resistance of structures. The sketch illustrates the material system and gives representative material thicknesses. The laminar system comprises an outer steel sheet, hardwood, polycarbonate plastic, a ballistic resistant (hardened steel) sheet, and an inner sheet of steel; the materials are laminated in the order given from the outside (attack side) to the inside. This laminar materials systems (used as a 3 foot wide by 7 foot high door, for example) provides greater penetration and ballistic resistance with lighter weight than prior systems.

대표청구항 ▼

A composite laminar panel structure capable of resisting penetration from attack by cutting tools, heat, small arms, projectiles and explosive forces, consisting in order of sequence from an attack side to the back side of the panel structure: a. a first relatively thin metal sheet which faces the d

A composite laminar panel structure capable of resisting penetration from attack by cutting tools, heat, small arms, projectiles and explosive forces, consisting in order of sequence from an attack side to the back side of the panel structure: a. a first relatively thin metal sheet which faces the direction of attack; b. a relatively thick layer of penetration and flame resistant hardwood disposed behind and adhered to said first metal sheet; said hardwood layer being chemically treated to reduce flamability thereof and delay thermal attack tools; c. a high ballistic resistant and flame resistant plastic sheet disposed and adhered to said panel of hardwood; d. a second metal sheet consisting of a relatively thin layer of armor plate metal disposed behind and adhered to said high ballistic resistant plastic layer; said sequence of materials laminated in said specific order from the attack side of the panel structure providing a laminar wall system having higher penetration resistance over comparable thickness and weight prior ballistic resistant wall structures.