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. 07, 1993
Filed:
Oct. 25, 1991
Applicant:
Inventor:
Gale D Burnett, Lynden, WA (US);
Assignee:
Pipeline Profiles, Ltd., Lynden, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324535 ; 324527 ; 324532 ; 324534 ;
Abstract
A method and apparatus of detecting an anomoly along an elongate, electrically conductive member comprising the steps of. An electrical pulse is so sent along the member from each of two locations towards an intersecting location between the two locations that the pulses intersect and are modified at the intersecting location. At least one of the modified pulses is analyzed to determine whether an anomoly exists at the intersecting location. The timing of at least one of the pulses is based at least in part on the propagation delay of an electrical pulse propagating between the two locations.