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:
Aug. 06, 2002
Filed:
Dec. 09, 1999
Applicant:
Inventor:
Edmund O. Schweitzer, Jr., Northbrook, IL (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/102 ; G01R 3/108 ; G01R 3/1315 ; G01R 3/300 ;
U.S. Cl.
CPC ...
G01R 3/102 ; G01R 3/108 ; G01R 3/1315 ; G01R 3/300 ;
Abstract
A fault indicator for three phase sheathed cables includes a flexible collar unit which fits over the cable. Magnetic pole pieces within the collar unit having associated magnetic windings are aligned with the three conductors within the cable to produce signals indicative of the current level in each conductor. An alarm unit receives the signals and sounds an alarm in the event the current in any conductor exceeds a predetermined threshold level to indicate the occurrence of a fault. The voltage level of the current indicating signals may be utilized to align the magnetic core assemblies with the conductors.