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. 16, 1980
Filed:
Jun. 21, 1979
Peter Murphy, Longueuil, CA;
Yvon O Dionne, Chateauquay, CA;
Jerry J Kral, Montreal, CA;
John Stefaniszyn, Beaconsfield, CA;
Northern Telecom Limited, Montreal, CA;
Abstract
Faults, such as pinholes, in the insulation of an electrical conductor are detected by passing the conductor through a liquid electrolyte which acts as a liquid electrode. A regulated DC supply is connected to the electrolyte, the conductor core grounded, and the DC bias to the electrolyte monitored. Any variation in the DC bias, is detected and for any change over a predetermined minimum value a signal is produced, which can be used to actuate a marker or stop the line. More than one conductor can pass together, for example twisted pairs or quads as used for telecommunications.