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:
Mar. 22, 1988
Filed:
Apr. 06, 1987
Kenneth D George, Bluffton, IN (US);
Franklin Electric Co., Inc., Bluffton, IN (US);
Abstract
This disclosure relates to a voltage surge arrestor for use with an electric device having a component to be protected from a voltage surge. The arrestor comprises at least first and second electrodes, and a spacer connected to the electrodes and mounting the first and second electrodes in spaced relation. The electrodes have portions which are spaced relatively close to each other and form a gap therebetween, and a gravity movable member is in the space between the electrodes and movable by gravity into and out of the gap, thereby changing the voltage breakdown level in the gap. The arrestor further includes a voltage and current limiting block connected to one of the electrodes. The movable member may be electrically conductive or a dielectric member, and it may be liquid or solid.