Electromagnetic-shielding gasket

Details Electromagnetic-shielding gasket Electromagnetic-shielding gasket

1989-10-25

1990-12-25

Shoap, Allan N.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 35MS, 277228, 277901, H05K 900

Patent

active

049805169

ABSTRACT:
An electromagnetic-shielding gasket of this invention is composed of an elastic body. The elastic body contains a filler of whisker-shaped carbon fiber with a micro diameter. The carbon fiber is developed from ultrafine particles of a high-melting metal and/or the compound of the high-melting metal through a vapor-phase system. The carbon fiber developed in the vapor phase is uniformly dispersed in the elastic body. Consequently, the electromagnetic-shielding gasket has a uniform low electric resistivity and an elasticity. By fitting the electromagnetic-shielding gasket onto gaps in the housing of electronic components, the housing is kept watertight and airtight, and electromagnetic waves are prevented from passing through the gaps.

REFERENCES:
patent: 2885459 (1959-05-01), Pulsifer et al.
patent: 3126440 (1964-03-01), Goodloe
patent: 3542939 (1970-11-01), Mintz
patent: 4096459 (1978-06-01), Lowenhar
patent: 4288081 (1981-09-01), Sado
patent: 4577872 (1986-03-01), Bake et al.
patent: 4725693 (1988-02-01), Hirsch
patent: 4769514 (1988-09-01), Uematsu et al.

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