Gasket for providing EMI/RFI shielding
AssigneeGichner Systems Group, Inc.
InventorGeorge McIlwraith
Life of this patent
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Abstract
An improved device for providing EMI/RFI shielding for a joint is disclosed comprising a compressible, resilient sealing element and a conductive shielding element bonded to the sealing element and positioned such that the shielding element provides a direct electrical contact across the joint. The disclosed invention further provides a cabinet which effectively utilizes such a device. The disclosed invention also includes an improved cabinet construction which minimizes the paths by which moisture and debris may enter the cabinet interior, while providing a cabinet which is transportable without violating the integrity of the cabinet structure.
Claims25
A sealing device, comprising:
- an elongate compressible, resilient head;
- a pair of legs extending downwardly from said head;
- and
- a conductor disposed between said legs and extending upwardly adjacent the outer surface of one of said legs and a portion of said head, said conductor comprising:
- a plurality of individually movable fingers each extending from between said legs to the outer surface of said head;
- and
- means for interconnecting said fingers.
A sealing device, comprising:
- an elongate compressible, resilient head having an ear formed thereon;
- a pair of legs extending downwardly from said head and having mutually facing inner surfaces;
- and
- a conductor disposed between said mutually facing surfaces and extending upwardly adjacent the outer surface of one of said legs and a portion of said head, said conductor comprising:
- a first strip of conductive material spaced apart from a second strip of conductive material,
- said first strip being positioned adjacent said head and said ear and defining an inwardly curled lip thereon for contacting said head,
- said second strip being positioned between said mutually facing surfaces and extending generally parallel to said facing surfaces and defining a second lip positioned intermediate said facing surfaces;
- and
- a plurality of spaced apart fingers, each extending from said first strip to said second strip and being shaped to bow outwardly from the outer surface of said one of said legs.
An EMI/RFI shielded cabinet, comprising:
- a corner member having a plurality of brackets extending therefrom and positioned normal to one another;
- a plurality of frame members corresponding to said plurality of brackets, one of said frame members being slidably positioned over each of said brackets and abutting said corner member;
- a flange extending upwardly from each of said plurality of frame members;
- a top panel having a downwardly extending lip formed around its periphery, said top panel being positioned atop said plurality of frame members such that said lip on said top panel is disposed exteriorly of said flange on said plurality of frame members such that said flange extends upwardly toward said top panel at a point inside the outer periphery;
- and
- a gasket attached to said flange on each of said plurality of frame members, a portion of said gasket extending between said top panel and said flange to effect a seal between said top panel and said flange, said gasket comprising:
- an elongate compressible, resilient head;
- a pair of legs extending downwardly from said head;
- and
- a conductor disposed between said legs and extending upwardly adjacent the outer surface of one of said legs and a portion of said head, said conductor comprising:
- a plurality of individually movable fingers each extending from between said legs to the outer surface of said head;
- and
- means for interconnecting said fingers.
An EMI/RFI shielded cabinet, comprising:
- at least one frame member defining an elongate flange;
- at least one panel capable of being positioned adjacent to said flange, said flange and said panel defining an elongate joint therebetween;
- and
- a shielding device mounted on said flange for shielding said joint, said shielding device comprising:
- an elongate compressible, resilient head;
- a pair of legs extending downwardly from said head;
- and
- a conductor disposed between said legs and extending upwardly adjacent the outer surface of one of said legs and a portion of said head, said conductor comprising:
- a plurality of individually movable fingers each extending from between said legs to the outer surface of said head;
- and
- means for interconnecting said fingers.
Dependencies are inferred from the claim text.