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:
Sep. 27, 2016
Filed:
Oct. 08, 2013
Applicant:
Abb Inc., Cary, NC (US);
Inventor:
John C. Webb, Florence, SC (US);
Assignee:
ABB Inc., Cary, NC (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 85/32 (2006.01); G01R 31/02 (2006.01); G01R 31/07 (2006.01); H01H 85/30 (2006.01); H01H 71/12 (2006.01); H01H 71/46 (2006.01); H01H 73/14 (2006.01); H01H 71/04 (2006.01);
U.S. Cl.
CPC ...
H01H 85/32 (2013.01); H01H 71/123 (2013.01); H01H 71/46 (2013.01); H01H 73/14 (2013.01); H01H 71/04 (2013.01); H01H 2071/044 (2013.01);
Abstract
A trip control circuit for a circuit breaker which provides for self-diagnostics includes a normally opened trip contact, a tripping circuit, and a signal light in series with the tripping circuit and the trip contact. The trip control circuit also includes a flasher circuit constructed and arranged to provide signaling of an abnormal condition of a circuit breaker to the signal light, while permitting the circuit breaker to trip provided that a cause of the abnormal condition signaled is not one which prevents tripping of the circuit breaker.