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:
Apr. 03, 1979
Filed:
Mar. 02, 1977
Edmund W Kuhn, Mt. Lebanon, PA (US);
Allan I Bennett, Murrysville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An electric fuse is disposed within a fluid tight submersible enclosure. The status of the fuse is indicated by an externally mounted neon lamp. The outside surface of the enclosure is coated with conductive paint for safety. Likewise, most of the inside surface of the enclosure is coated with conductive paint to reduce corona therein. A relatively thin annular band of semiconductive paint is disposed between terminals of the fuse apparatus on the inner surface of the enclosure. The enclosure is made primarily of insulating material. When the fuse blows, the voltage difference between the opposite ends of the fuse is capacitively coupled through the enclosure to the indicator. The indicator is sensitive to a change in voltage thereacross and periodically illuminates to indicate that the fuse within has blown.