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:
Nov. 14, 1989
Filed:
Jun. 29, 1988
Maurice G Fey, Pittsburgh, PA (US);
William J Lange, Murrysville, PA (US);
Carl B Freidhoff, Murrysville, PA (US);
Paul G Slade, Pittsburgh, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An electrical vacuum interrupter comprising a pair of separable contacts enclosed within a vacuum enclosure whose walls have joints formed of a polymeric material which can maintain sufficient vacuum, mechanical, thermal, and electrical properties to permit proper operation. Major part of the vacuum enclosure, in addition to the joint, may be formed of a polymeric material. A method of assembly is provided that avoids need for high temperatures and includes use of electrical discharge between the contacts for cleaning the interior of the vacuum enclosure.