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:
Oct. 08, 1991
Filed:
Oct. 05, 1989
Applicant:
Inventors:
Dietrich Konigstein, Gebenstorf, CH;
Dieter Koster, Turgi, CH;
Assignee:
Asea Brown Boveri Ltd., , CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340664 ; 340649 ; 324555 ;
Abstract
An electrical system contains two current-fed components having respective grounded housings. Each of these components is connected via a respective conductor to a common ground point. A signal-transmitting connection galvanically connects the housings two components to each other. A parasitic-current indicator is permanently installed in the system and detects parasitic currents (I.sub.S) flowing between the grounded housings and generates a warning at a predetermined signal level.