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:
Jul. 24, 2012
Filed:
Jun. 02, 2010
Robert Yanniello, Asheville, NC (US);
Robert Yanniello, Asheville, NC (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An electrical system includes first, second and third power busses; a first interrupter electrically connected between the first and second power busses; a second interrupter electrically connected between the second and third power busses; at least one of a shorting apparatus operatively associated with the second power bus, and the first interrupter comprising a trip coil; a current sensor to sense a fault current of at least a predetermined magnitude flowing in the second power bus and responsively output a first signal; a number of light sensors to sense an arc flash operatively associated with a number of the second and third power busses and responsively output a second signal; and a circuit to delay and invert the first signal to provide a third signal, and to operate the at least one of the shorting apparatus and trip coil responsive to an AND of the first, second and third signals.