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. 27, 1992
Filed:
Jun. 25, 1990
Michael P Dunk, Racine, WI (US);
Gary D Rector, Muskego, WI (US);
John F Banting, Waukesha, WI (US);
Cooper Industries, Inc., Houston, TX (US);
Abstract
A faulted circuit detector having an electrically isolated and remotely positioned indicator detects fault currents in a monitored conductor. When a fault of a predetermined magnitude is detected, a light pulse is transmitted from the detector to the indicator via a fiber optic cable where, upon receipt, the pulse is converted to an electrical pulse causing the indicator to indicate a 'fault' state. A reset circuit within the indicator resets the indicator at regular intervals to the 'normal' state as long as a predetermined minimum voltage is present on the monitored conductor. A test circuit is also provided to allow service personnel to field test the device with the monitored conductor in an energized state.