Bushing including an expansion compensation seal

Details Bushing including an expansion compensation seal Bushing including an expansion compensation seal

1984-07-31

1986-09-02

Askin, Laramie E.

Electricity: conductors and insulators

Insulators

Through wall or plate

174 31R, 277180, 277184, 277233, 277235R, H01B 1730, F16J 1512

Patent

active

046097759

ABSTRACT:
This invention is directed to an improved seal for an electrical conductor bushing operable in service above about 69 kV. Typically, the seal is interposed between the bushing cap and the porcelain. Two flat, thin non-metallic gaskets are stacked together and separated from each other by means of a rigid washer. The rigid washer is provided with a pair of inner and outer upstanding flanges which form a trough for engagement therein of one of the gaskets. The gasket-washer assembly provides oil-tight integrity for the bushing under standard industry cantilever and thermal expansion tests.

REFERENCES:
patent: 524162 (1894-08-01), Cochrane
patent: 1752281 (1930-03-01), Austin
patent: 2802176 (1957-08-01), Anderson et al.
patent: 2852291 (1958-09-01), Hults
patent: 3278883 (1966-10-01), Lipsey

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