Electromagnetic shield for electronic equipment
First Claim
1. An interference shield for limiting non-visual emanations from an electronic device, said shield comprising an electrically conductive screen partially encapsulated within an optically transparent material defining a central portion of first uniform thickness and a peripheral portion of second thickness substantially less than said first thickness, and with a portion of said screen extending without encapsulation beyond said peripheral portion of said transparent material, said central portion of said transparent material being rigid, said peripheral portion being flexible.
1 Assignment
0 Petitions
Accused Products
Abstract
A substantially transparent interference shield wherein a flexible material employed to form an interlayer laminating a thin metal screen between two panels of glass is extended beyond the periphery of the panels a distance less than the screen so as to provide the necessary support permitting the shield to be mounted in a surrounding frame solely by clamping engagement of the extended screen. Provision is also made for the additional encapsulation within the flexible material of a resilient gasket employed to enhance electrical contact between the screen and the frame.
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Citations
15 Claims
- 1. An interference shield for limiting non-visual emanations from an electronic device, said shield comprising an electrically conductive screen partially encapsulated within an optically transparent material defining a central portion of first uniform thickness and a peripheral portion of second thickness substantially less than said first thickness, and with a portion of said screen extending without encapsulation beyond said peripheral portion of said transparent material, said central portion of said transparent material being rigid, said peripheral portion being flexible.
- 2. An interference shield for limiting non-visual emanations from an electronic device, said shield comprising an electrically conductive screen partially encapsulated within an optically transparent material defining a central portion of first uniform thickness and a peripheral portion of second thickness substantially less than said first thickness, and with a portion of said screen extending without encapsulation beyond said peripheral portion of said transparent material, said central portion of said transparent material defining two sheets of a first rigid material and said peripheral portion defining a larger sheet of a second flexible material, said second material partially encapsulating a central portion of said screen and forming an interlayer laminated between said sheets of said first material.
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6. An interference shield for limiting nonvisual emanations from an electronic device, said shield comprising an electrically conductive screen partially encapsulated within an optically transparent material defining a central portion of first uniform thickness and a peripheral portion of second thickness substantially less than said first thickness, and with a portion of said screen extending without encapsulation beyond said peripheral portion of said transparent material;
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a frame member having a central aperture formed there-through larger than said central portion of said transparent material, said peripheral portion of said material and said screen being of such dimensions that, with said central portion of said material positioned wholly within said aperture, said peripheral portion extends from said central portion a distance sufficient to permit its mechanical engagement by said frame member, said unencapsulated portion of said screen extending a further distance sufficient to permit its concomitant electrical contact with said frame member. - View Dependent Claims (7, 8, 9)
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- 10. An interference shield for limiting non-visual emanations from an electronic device, said shield comprising a sheet of electrically conductive screen partially encapsulated within a flexible material forming an interlayer laminated between two panels of a substantially rigid material, a first encapsulated portion of said screen extending a first distance beyond the periphery of said rigid material and a second unencapsulated portion of said screen extending a second distance beyond the periphery of said first portion.
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13. An interference shield assembly comprising:
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(a) a frame member having a central aperture formed therethrough; (b) an interference shield including an electrically conductive screen partially encapsulated within a flexible material forming an interlayer laminated between two panels of rigid material, a first encapsulated portion of said screen extending a first distance beyond the periphery of said rigid material sufficient to permit its mechanical engagement by said frame member, and a second unencapsulated portion of said screen extending a second distance beyond the periphery of said first portion sufficient to permit its concomitant electrical contact with said frame member; and (c) means for securing said shield to said frame member in a manner accomplishing said mechanical engagement and electrical contact. - View Dependent Claims (14, 15)
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Specification