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:
Oct. 24, 1995
Filed:
Jul. 14, 1994
Applicant:
Inventors:
Jeffrey Rosenberg, Tulsa, OK (US);
Steve Worthen, Tulsa, OK (US);
Assignee:
TDW Delaware, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; H02F / ;
U.S. Cl.
CPC ...
335306 ; 335303 ; 15104061 ;
Abstract
A spherical pigging device for passage through a pipeline wherein magnetic sensors are located exterior to the pipeline. The device includes a non-ferrous spherical body. A plurality of magnets, each magnet having its poles radially aligned, are divided into two groups, a first group having its north poles facing the center of the spherical body and a second group having its north poles facing away from the center of the sphere.