Method for fabricating a magnetic shielding enclosure
First Claim
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1. A method of fabricating a magnetic shield enclosure of magnetically permeable material such as mu-metal comprising the steps of:
- providing a first sheet of magnetically permeable material having a rectangular configuration with side flaps extending therefrom, and folding said flaps at right angles to said first sheet to form a container having a gap between each adjacent side;
providing a second piece of magnetically permeable material having said rectangular configuration and with side flaps extending therefrom, and folding said flaps at right angles to said second sheet to form a lid having a gap between each adjacent side;
providing a third piece of magnetically permeable material having a length substantially equal to the inside periphery of said container and a width substantially equal to the combined heights of said container and lid;
folding said third piece at four locations spaced along its length such that it substantially conforms to the inside periphery of said container with a gap disposed along one side; and
inserting said third piece within said container and lid to complete an enclosure wherein the gaps of said container and lid are non-coincident with the gap of said third piece.
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Abstract
A magnetic shielding enclosure is fabricated by a simple method of folding magnetically permeable material to provide essentially a gapless two-layered shield with small corner and edge radii.
37 Citations
5 Claims
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1. A method of fabricating a magnetic shield enclosure of magnetically permeable material such as mu-metal comprising the steps of:
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providing a first sheet of magnetically permeable material having a rectangular configuration with side flaps extending therefrom, and folding said flaps at right angles to said first sheet to form a container having a gap between each adjacent side; providing a second piece of magnetically permeable material having said rectangular configuration and with side flaps extending therefrom, and folding said flaps at right angles to said second sheet to form a lid having a gap between each adjacent side; providing a third piece of magnetically permeable material having a length substantially equal to the inside periphery of said container and a width substantially equal to the combined heights of said container and lid; folding said third piece at four locations spaced along its length such that it substantially conforms to the inside periphery of said container with a gap disposed along one side; and inserting said third piece within said container and lid to complete an enclosure wherein the gaps of said container and lid are non-coincident with the gap of said third piece. - View Dependent Claims (2, 3, 4, 5)
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Specification