H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/215
H01H 33/66 (2006.01) H01H 33/662 (2006.01)
Patent
CA 1073015
11VI 04190 ABSTRACT OF THE DISCLOSURE 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 body portion a region of very low electric stress.
276628
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