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:
Apr. 10, 2012
Filed:
Jun. 15, 2007
Susan Jean Walker Colsch, Shellsburg, IA (US);
David Joseph Dunne, Cedar Rapids, IA (US);
Kevin John Malo, Iowa City, IA (US);
Richard Allen Studer, Ii, Wesley, IA (US);
Susan Jean Walker Colsch, Shellsburg, IA (US);
David Joseph Dunne, Cedar Rapids, IA (US);
Kevin John Malo, Iowa City, IA (US);
Richard Allen Studer, II, Wesley, IA (US);
Schneider Electric USA, Inc., Palatine, IL (US);
Abstract
In a circuit breaker, a current transformer for fault powering trip unit electronics and sensing low currents and high currents includes a core with solid laminations and gapped laminations to sense a wide range of currents from locked-rotor currents to high, instantaneous short-circuit currents in a single current transformer. The current transformer can also fault power trip unit electronics without requiring an additional current transformer. The operating range of the circuit breaker is significantly enhanced compared to existing breakers that can sense only a limited range of current levels.