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. 02, 2003
Filed:
Mar. 02, 2001
Applicant:
Inventors:
Harvey Haines, Glen Ellyn, IL (US);
Robert B. Francini, Columbus, OH (US);
Assignee:
Gas Research Institute, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 2/100 ;
U.S. Cl.
CPC ...
G08B 2/100 ;
Abstract
A method for monitoring an in-ground pipeline by detecting an occurrence of a contact with an in-ground pipeline via an acoustic sensor employing a first selected detection parameter and a second sensor employing a second selected detection parameter, which is different from the first selected detection parameter. The locations of the acoustic sensor and the second sensor are known and the input signals from the sensors arrive at a processor at different times and at known respective speeds such as to permit a determination of the point of contact with the in-ground pipeline.