Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1997-02-05
1999-09-21
Bryant, David P.
Metal working
Method of mechanical manufacture
Assembling or joining
428 75, B21D 3900
Patent
active
059538082
ABSTRACT:
The sealed shielding unit comprises a unit made of multiple layers. The layers include a top surface and a bottom surface of a material such as metal, plastic or composite or the like and a middle portion of air or insulation product. The top and bottom layer and insulation are cut into designated shapes and then positioned into the predetermined positions and then pressed into a pan shape with edges having a small upper horizontal end portion. The upper horizontal end portion is folded over and then the edges are bent inward and flattened into a moisture sealed unit. The method of producing a sealed shielding unit comprises the steps of providing the desired material; cutting the desired material; positioning the desired material in pre-determined shapes; pressing the layers of material into a pan design having a horizontal end portion paralleling the base of the pan design; folding the horizontal end portion downward toward the base section of the pan design; forcing the edges of the material inward while holding the top of the edges in position which creates a dovetailed shape; and pressing the edges downward toward the base flattening the unit and creating a moisture sealed unit.
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Schenck, Jr. James I.
Stein Scott R.
Bryant David P.
Lydall, Inc.
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