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:
Jan. 19, 2010
Filed:
Dec. 04, 2006
Edgar R. Eley, Jackson, TN (US);
John B. Baskin, Jackson, TN (US);
Fabian D. Stacy, Jackson, TN (US);
Edgar R. Eley, Jackson, TN (US);
John B. Baskin, Jackson, TN (US);
Fabian D. Stacy, Jackson, TN (US);
ABB Technology AG, Zurich, CH;
Abstract
An oil-immersed circuit breaker is provided having a mechanical/magnetic trip indicator. In a preferred embodiment, the trip indicator comprises a mechanical drive train (coupled to a conventional trip-sensing mechanism), a push piece, and an indicator piece. The drive train and the push piece are located inside the enclosure immersed in oil. The indicator piece is located outside the enclosure. The push piece is magnetically coupled to the indicator piece. Magnetic coupling eliminates problems encountered with prior art trip indicators associated with oil-seal leakage, electrical component failure, and power source failure.