Epoxy bonded silicon carbide lightning-protection valve

Details Epoxy bonded silicon carbide lightning-protection valve Epoxy bonded silicon carbide lightning-protection valve

1976-09-30

1978-02-14

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

252516, 361127, H01C 710

Patent

active

040742210

ABSTRACT:
Lightning protection is provided by an electronic valve molded mainly of silicon carbide powder. The manufacturing cost and high reject rate of previous ceramic bonding is greatly reduced by bonding with epoxy resin, the mixture being pressure molded. The surface-tracking characteristic of epoxy resin is rendered harmless by covering the periphery of the molded piece with insulation and by inclusion of alumina powder in the mix. The insulating sleeve is extended to provide a hood preventing harmful migration of an ionized arcing path.

REFERENCES:
patent: 2501322 (1950-03-01), Ferguson et al.
patent: 2806005 (1957-09-01), White
patent: 3017539 (1962-01-01), Robinson
patent: 3040282 (1962-06-01), Heath
patent: 3207624 (1965-09-01), Burrage et al.
patent: 3310766 (1967-03-01), Downing
patent: 3725745 (1973-04-01), Zisa

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