|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||086/001.R; 086/020.B; 102/496; 264/122; 264/310; 029/001.2|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 10 인용 특허 : 1|
A method of producing plastic-based casings including preformed metal fragments for ordnance articles, such as hand grenades, weapon-launched grenades or the like, by rotational molding in a shell-mold; a pulverulent thermoplastic polymer material, such as polyethylene, and steel fragments or particles are introduced into the cold shell mold, optionally in the form of a pre-compact; the closed mold is rotated slowly, i.e. at a speed where the polymer and metal constituents tend to tumble about the inner mold surface and are not held substantially thereon...
1. A method of producing a fragmentation casing for an explosive ordnance article of the type having a charge substantially enclosed by a casing member for explosive disintegration thereof upon ignition of said charge, said casing having an integral structure combining a wall formed of an organic polymer composition and a plurality of preformed metal fragments, said method comprising the steps of: (A) introducing a predetermined quantity of a normally solid polymer composition in the form of fine particles capable of coalescing and melting at an elevat...