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:
Oct. 16, 1979
Filed:
May. 27, 1977
Francis A Holmes, Monroeville, PA (US);
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Abstract
A vacuum type current interrupter is provided having a low mass movable electrode which can be moved into electrical contact with a stationary electrode for carrying large currents associated with power lines. A third electrode is positioned in the vacuum envelope in opposing relation to the stationary electrode and adjacent the movable electrode. When the stationary and movable electrodes are separated an arc will appear between their contact surfaces. The third electrode is conductively connected to the movable electrode so that the arc will spread from the latter to the relatively larger surface of the third electrode, to reduce local overheating of the electrodes during arcing.