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.

Date of Patent:
Jun. 21, 1994

Filed:

Apr. 09, 1992
Applicant:
Inventors:

Francis Geiser, Yverdon, CH;

Sergio Lazzarotto, Marin, CH;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ; H02H / ;
U.S. Cl.
CPC ...
361 87 ; 361 93 ; 361115 ;
Abstract

This invention concerns a system for the protection of electric circuits (60, 61, 62) which permits an analysis in real time of the evolution of electric currents circulating in such electric circuits, such analysis having as its purpose not only protection but also prevention. Such protection system comprises at least one circuit breaker (64, 66) including a first coil (70, 71) associated with a magnetic circuit and bearing the main current, as well as a second coil (74, 75) likewise associated with the magnetic circuit. Such second coil carries an induced current representative of the main electric current. Such induced current is processed by an electronic circuit (80) which supplies a processed signal representative of at least one characteristic of the main current, said characteristic being used for prevention in the electric circuits.


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