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US 4,204,238 AGranted
Surge voltage lightning arresters
AssigneeGeneral Electric Company
InventorEarl W. Stetson
Life of this patent
Estimating the term…
Abstract
A surge voltage lightning arrester ground lead disconnector utilizes a refractory metal coating on the explosive cartridge to provide a thermal delay to the arcing that occurs during disconnector operation. The thermal delay insures the explosion of the cartridge and promotes venting the arrester housing.
Claims3
An improved ground disconnector for a surge arrester of the type having a metal sealing disc and an explosive cartridge, the improvement which comprises:
- an embossed aluminum sealing disc having a raised portion for electrically connecting with the surge arrester and a flat portion in arc relationship with the explosive cartridge;
- and
- a refractory metal coating having a thickness of from 0.005" to 0.030" deposited on a portion of the explosive cartridge to provide a thermal delay to the explosive.
Dependencies are inferred from the claim text.