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:
Nov. 08, 2011
Filed:
Jul. 24, 2008
Sriram Changali, Cochin, IN;
John Kenneth Hooker, Louisville, KY (US);
Konstantin Vladimir Grigoryan, Louisville, KY (US);
Scott Jeffrey Hall, Louisville, KY (US);
Sriram Changali, Cochin, IN;
John Kenneth Hooker, Louisville, KY (US);
Konstantin Vladimir Grigoryan, Louisville, KY (US);
Scott Jeffrey Hall, Louisville, KY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An apparatus to perform series and parallel arc fault current interruption (AFCI). The apparatus includes a resistive element configured to sense a load from which a current signal is generated, a first detection unit configured to output a first signal based on the current signal, and a microcontroller configured to decompose at least the first signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, and to generate a trip signal when the discrete wavelet coefficients indicate that a threshold condition for trip signal generation are satisfied.