Electricity: conductors and insulators – Insulators – Through wall or plate
Patent
1987-12-11
1990-11-20
Askin, Laramie E.
Electricity: conductors and insulators
Insulators
Through wall or plate
439559, 439921, H01B 1730
Patent
active
049720490
ABSTRACT:
An electrical apparatus comprising a container adapted to contain an electrical mechanism, the container including a wall having an outer surface and having therethrough a bore, a bushing including a contact adapted to be connected to the electrical mechanism, a portion extending through the bore, and a surface facing the outer surface of the wall and having therein an endless recess, the recess surrounding the portion and having a volume, an endless gasket located in the recess, surrounding the portion, and having a volume when the gasket is uncompressed that is less than the volume of the recess, and studs for securing the bushing to the container and for compressing the gasket between the bushing and the outer surface of the container.
REFERENCES:
patent: 2564181 (1951-08-01), Van Ryan
patent: 2941182 (1960-06-01), Heller
patent: 3054850 (1962-09-01), Dulude
patent: 3193617 (1965-07-01), Deakin
patent: 3200366 (1965-08-01), Stuart
patent: 3784733 (1974-01-01), Farmer et al.
patent: 3803523 (1974-04-01), Farmer et al.
patent: 4573757 (1986-03-01), Cochran et al.
Askin Laramie E.
Cooper Power Systems, Inc.
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