The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 1977
Filed:
Apr. 28, 1976
Donald Wayne Crouch, Newtown Square, PA (US);
General Electric Company, Philadelphia, PA (US);
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.