Multi-function gasket

Details Multi-function gasket Multi-function gasket

H - Electricity

05

K

347/7

H05K 9/00 (2006.01)

Patent

CA 1309486

ABSTRACT OF THE INVENTION A multi-function gasket for electrical apparatus and the like, operation of which tends to generate or be adversely affected by electromagnetic and radio frequency interference (EMI/RFI), comprising: a continuously molded, resilient foam core having a sealed outer boundary layer when cured; a flexible, electrically conductive and substantially abrasion resistant sheath surrounding the foam core and bonded to the boundary layer as the foam expands within and fills the interior of the sheath during the molding; and, mounting structure for affixing the gasket. The apparatus may be sealed against EMI/RFI leakage, noise emission and environmental infiltration through perimeter gaps of electrically conductive doors, access panels and the like by the actions and interactions of the sheath, the foam core and the boundary layer. The flexible sheath is continuously pressed into positive engagement with the conductive surfaces between which it is mounted by the resilient foam core, forming a continuous electrical path across the gaps and preventing EMI/RFI leakage through the gaps. The boundary layer prevents noise emission and environmental infiltration across the gaps. The sheath protects the boundary layer against damage from abrasion and the like.

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