Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-04-28
1977-12-06
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01L 3366
Patent
active
040618943
ABSTRACT:
This vacuum-type circuit interrupter comprises a plate located at the outer side of one end cap of the evacuated envelope of the interrupter. Within the envelope there are separable beryllium contacts, one of which is carried by a movable contact rod extending through aligned apertures in the end cap and the plate. A flexible metal bellows extends freely through the aperture in the end cap and is joined at its outer end to the plate and at its inner end to the contact rod. A cup-shaped metal shield for the bellows comprises a tubular body portion surrounding the bellows and having a free-end region located within the aperture in the end cap during at least the final portion of an opening stroke of the movable contact rod. A metal shield within the envelope surrounds said tubular body portion in spaced relation and renders the region around said tubular body portion a region of very low electric stress.
REFERENCES:
patent: 2897322 (1959-07-01), Reece
patent: 2900476 (1959-08-01), Reece
patent: 2920169 (1960-01-01), Jennings
patent: 3211866 (1965-10-01), Crouch et al.
patent: 3441698 (1969-04-01), Sofianek
patent: 3679474 (1972-07-01), Rich
patent: 3766345 (1973-10-01), Attia
patent: 3854068 (1974-12-01), Rich
Freedman William
General Electric Company
Macon Robert S.
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