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:
Sep. 24, 1985
Filed:
May. 09, 1983
Daniel A Boryta, Downingtown, PA (US);
Misac N Nabighian, Tucson, AZ (US);
Foote Mineral Company, Exton, PA (US);
Abstract
The location of a leak in a pond liner made of a sheet of electrically insulating material, such a polyvinyl chloride, supported by an electrically conductive medium, an example of which is a salar, is determined by immersing a power electrode in an electrically conductive fluid within the pond and a second or ground electrode in the supporting medium and creating therewith an electric potential between the pond fluid and supporting medium. A detector, having a pair of spaced probe electrodes which are electrically connected, is introduced to the fluid near the power electrode with the ends of the probe electrodes adjacent the liner. The detector is rotated until a maximum current reading is obtained by a galvanometer electrically connected to the detector probes. With the probes so aligned with respect to the power electrode, the probes are cause to traverse the liner and the location of a leak is noted by a sharp change in the galvanometer reading as one of the probes passes over the leak.