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:
Jan. 01, 2008
Filed:
Oct. 11, 2002
Steven Martin Hudson, Sturminster Newton, GB;
Daniel Joinson, Carterton, GB;
Steven Martin Hudson, Sturminster Newton, GB;
Daniel Joinson, Carterton, GB;
Expro North Sea Limited, Berkshire, GB;
Abstract
Method systems and apparatus for signalling within pipelines. The systems methods and apparatus make use of a unit locatable within a tubular piece of metallic structure for the transmission and/or reception of signals. The unit includes a magnetic material core () which provides a path for magnetic flux through the unit (). A coil () is wound around a portion of the magnetic material core () to allow the detection and/or application of magnetic flux in the magnetic core (). At each end of the core () there is pair of arms () which are arranged for location adjacent the inside surface of the tubular structure. In use magnetic signals flowing in the tubular structure pass through the core () and can be detected via the coil () in receive mode and similarly signals flowing in the coil () can cause magnetic flux to flow through the core () and into the metallic structure in transmit mode.