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:
Dec. 07, 1999
Filed:
Apr. 10, 1998
Applicant:
Inventor:
Christoph Klees, Wiehl, DE;
Assignee:
Schneider Electric SA, Boulogne Billancourt, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361166 ; 361170 ; 307326 ;
Abstract
A monitoring circuit which allows for the complete monitoring, at short intervals, of several signal inputs and consequently of signal outputs without having to take into account external interference, like for instance the execution time in the case of light barriers, is obtained in that the signal inputs are connected through two capacitors to at least one relay, in that the signal inputs apply a potential to the capacitors while oscillating and in that the capacitors discharge into the relays while oscillating.