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:
Mar. 20, 1984
Filed:
Jan. 21, 1982
Joseph W Rog, Medina, OH (US);
Charles G Waits, Hanover Park, IL (US);
Karl W Nicholas, Roselle, IL (US);
Harco Corporation, Medina, OH (US);
Abstract
The apparatus and method of the present invention facilitate surveys of buried structures, such as pipelines or the like, in particular by substantially automatically measuring and indicating distance information. Preferably that information is obtained by a transducer that produces serial data representing the length of wire bailed out from a portable reel and a cyclical counter responsive to such data for counting the serial data. A signalling device, such as a horn, strobe light, etc., is activated each time the counter completes a cycle as an indication that a predetermined distance has been covered since the last measurement was made and that the next potential measurement should be made. The number of pulses of such serial data counted in each cycle of the counter can be manually adjusted to obtain small or large distance intervals between test locations at which potential or other measurements are to be made to obtain a substantially continuous survey of the pipeline.