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:
Jun. 14, 1983
Filed:
Jun. 09, 1980
Robert L Deskins, Huntington Beach, CA (US);
Gary L Matlack, Ontario, CA (US);
Robert D Ashbaugh, Mission Viejo, CA (US);
Harco Corporation, Medina, OH (US);
Abstract
An apparatus and method of conducting continuous or closely spaced buried structure-to-soil electrical surveys uses a soil contact cell adapted to be worn on the bottom of the walking field boots of a surveyor walking over the right-of-way of the buried structure such as an underground pipeline. The cell is in the form of a sandal which may readily be secured to and removed from the bottom of the boot. The cell includes an impervious upper plate and a pervious lower ground contacting flexible sole plate forming with the upper plate a flat chamber which may be filled with a loose silica sand fill or sponge material. A copper rod or strap is imbedded in the material and electrically connected through a meter carried by the surveyor to the structure through a length of economically disposable wire. The surveyor carries a supply of conductive liquid such as a copper sulfate solution which is fed into the chamber and through the porous sole plate to the ground to ensure good electrical contact as the surveyor walks the right-of-way.