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:
Nov. 01, 1994
Filed:
Jun. 17, 1993
Applicant:
Inventor:
Robert L Watt, Friendswood, TX (US);
Assignee:
Tuboscope Vetco International, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B61B / ;
U.S. Cl.
CPC ...
1041382 ;
Abstract
A device for the in-line inspection of pipe. The device is spring-loaded to provide an adequate pressure between the supporting brushes of the device and the interior pipe wall for effective magnetic inspection with pipe of various internal diameters. A biasing spring is used in association with the spring-loaded device to extend and provide a supplemental force when the device passes from a relatively small to a relatively large diameter pipe to rapidly and effectively position a magnetizing section of the device within the larger diameter pipe.