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:
May. 25, 1999
Filed:
May. 12, 1997
Applicant:
Inventor:
John Gandy, Conroe, TX (US);
Assignee:
John Gandy Corporation, Conroe, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 55 ; 285329 ; 285333 ; 285422 ; 205131 ;
Abstract
A pipe couple is shown for connecting two pipelines of different materials together in a well environment which prevents deterioration of the pipe due to galvanic action. The couple achieves its purpose by coating the interior of the more noble pipe section with a wear-resistant, non-conductive coating which prevents electrolytic action between the two dissimilar metals. It also achieves high pullout resistance while maintaining minimum outer dimensions to facilitate use of the couple in all types of wells including oil, gas and waste injection wells.