|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B21D-013/00 B21D-022/00 B21D-031/00 B21D-039/02|
|미국특허분류(USC)||295/21 ; 702/363|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 25 인용 특허 : 27|
A forge/swage formed three dimensional multilayer metal foil shield having areas therein where the layers are in a spaced apart relationship, areas therein where the layers are tensioned or stretched, and areas therein where the layers are compressed and interlocked together by folding, rolling, wrinkling, curling, coiling, crimping and the like. The multilayer metal foil shield is formed by forge/swage shaping in an appropriate mold apparatus a preform of a stack of metal foil layers having gaps between the layers. The gaps are provided by embossments i...
[ We claim:] [1.]1. A method of forming a multilayer metal foil structure comprising:at a first location, forming a bead along at least one edge of a stack of at least three metal layers to form a substantially-flat unitary multilayer metal beaded preform;transporting the substantially-flat unitary multilayer metal beaded preform to a second location; andat the second location, forming said substantially-flat unitary multilayer metal beaded preform into a three-dimensional shape over a mold, wherein the first and second forming steps are such that the la...