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:
May. 10, 1983
Filed:
Nov. 05, 1980
Charles F Cromer, Levelgreen-Penn Township, West Moreland County, PA (US);
Willie B Freeman, Monroeville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An improved circuit-interrupter of either the vacuum-type, or of the compressed-gas type, is provided having a shunting capacitance around, or electrically paralleling, the separable power contacts of the main power interrupter. In series with the said electrically-shunting capacitance is capacitor-isolating disconnecting switch, which interrupts the residual capacitance current at a subsequent point in time following the interruption of the main-power current in the main-power interrupting unit. The present invention may be applied not only to vacuum interrupters, but also to compressed-gas circuit-interrupters of either the double-pressure gas type, or the single-pressure gas type, such as the so-called 'puffer' gas type, creating gas flow by relative piston-and-cylinder operation.