Apparatus and method for electromagnetic shielding

Claim 3

The apparatus of claim 1 wherein the compression section of the gasket comprises a conductive fabric filled with a compressible, resilient material.

Claim 4

The apparatus of claim 2 wherein the compressible resilient material is a fire rated urethane foam.

Claim 5

The apparatus of claim 1 further comprising lateral support member running the length of the gasket.

Claim 6

An EMI shielding system for an electronic circuit card comprising: a conductive faceplate for attachment to one end of the circuit card; and a gasket for attachment to the circuit card, the gasket including: an exterior surface of conductive fabric; a compression section for contact with a conductor that is adjacent to the circuit card and with the faceplate of the circuit card; a narrow section configured to fit between the circuit card to which it is mounted and the faceplate of an adjacent card to which the compression section is to make electrical contact; and a section formed at an angle with the compression section, the angled section for admitting the faceplate of an adjacent circuit card; and support member mounted to the circuit card for supporting at least the narrow section of the gasket and for aligning the gasket with an edge of the faceplate of the circuit card.

Claim 7

An EMI shielding system for an electronic circuit card comprising: a conductive faceplate for attachment to one end of the circuit card; and a gasket for attachment to the circuit card, the gasket including: an exterior surface of conductive fabric; a compression section for contact with a conductor that is adjacent to the circuit card and with the faceplate of the circuit card; a narrow section configured to fit between the circuit card to which it is mounted and the faceplate of an adjacent card to which the compression section is to make electrical contact; and a section formed at an angle with the compression section, the angled section for admitting the faceplate of an adjacent circuit card; and support member mounted to the circuit card for supporting at least the narrow section of the gasket and for aligning the gasket with an edge of the faceplate of the circuit card.

Claim 8

The system of claim 5 wherein the compression section of the gasket comprises a conductive fabric filled with a compressible, resilient material.

Claim 9

The system of claim 6 wherein the compressible, resilient material is a fire rated urethane foam.

Claim 10

The system of claim 5 wherein the faceplate includes an edge on the wiring side of the circuit board and the support member is attached to the wiring side of the circuit board.

Claim 11

The system of claim 8 wherein the support member aligns the edge of the faceplate on the wiring side of the circuit board with the gasket.

Claim 12

The system of claim 9 wherein the support member is composed of a dielectric material.

Claim 13

The system of claim 5 further comprising a lateral support member running the length of the gasket.

Claim 14

A shielding system for suppressing EMI in an electronic circuit cabinet having one or more racks of electronic circuit cards comprising: a plurality of circuit cards mounted in a card rack; an electrically conductive faceplate attached to one end of each card; an electrically conductive gasket attached to each card and extending the length of the faceplate, the gasket including: an exterior surface of conductive fabric; a compression section for contact with the faceplate and with a conductor that is adjacent to the circuit card; a narrow section configured to fit between the circuit card to which it is attached and the faceplate of an adjacent circuit card to which the compression section makes electrical contact; and a section formed at an angle with the compression section, the angled section for admitting the faceplate of an adjacent circuit card; and a support member mounted to each the plurality of circuit cards for supporting at least the narrow section of a respective one of the gaskets and for aligning a respective one of the gaskets with an edge of a respective one of the faceplates.

Claim 15

A shielding system for suppressing EMI in an electronic circuit cabinet having one or more racks of electronic circuit cards comprising: a plurality of circuit cards mounted in a card rack; an electrically conductive faceplate attached to one end of each card; an electrically conductive gasket attached to each card and extending the length of the faceplate, the gasket including: an exterior surface of conductive fabric; a compression section for contact with the faceplate and with a conductor that is adjacent to the circuit card; a narrow section configured to fit between the circuit card to which it is attached and the faceplate of an adjacent circuit card to which the compression section makes electrical contact; and a section formed at an angle with the compression section, the angled section for admitting the faceplate of an adjacent circuit card; and a support member mounted to each the plurality of circuit cards for supporting at least the narrow section of a respective one of the gaskets and for aligning a respective one of the gaskets with an edge of a respective one of the faceplates.

Claim 16

The system of claim 12 wherein the compression section of the gasket comprises a conductive fabric filled with a compressible resilient material.

Claim 17

The system of claim 13 wherein the compressible resilient material is a fire rated urethane foam.

Claim 18

The system of claim 14 wherein each faceplate includes an edge on the wiring side of the circuit board and each support member is attached to the wiring side of a circuit board.

Claim 19

The system of claim 15 wherein each support member aligns the edge of the faceplate on the wiring side of the circuit board with each gasket.

Claim 20

The system of claim 16 wherein the support member is composed of a dielectric material.

Claim 21

The system of claim 17 wherein each gasket is in electrical communication with cabinet ground.

Claim 22

The system of claim 18 wherein each gasket makes electrical contact with an adjacent faceplate through its compression section.

Claim 23

The system of claim 19 wherein each gasket makes electrical contact with an adjacent section of the cabinet.

Claim 24

The system of claim 20 wherein each gasket is attached to the cabinet to make electrical contact with a faceplate of an adjacent card through contact with the compression section of a respective one of the gaskets attached to the cabinet.

Claim 25

The system of claim 12 wherein each gasket further comprises: a lateral support member running the length of the gasket.