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. 06, 1992
Filed:
Apr. 15, 1991
Applicant:
Inventors:
David A Shotts, Naperville, IL (US);
Raffaele Basile, Chicago Heights, IL (US);
Assignee:
Allied Tube & Conduit Corporation, Harvey, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138151 ; 138143 ; 138156 ;
Abstract
A plastic-lined metallic pipe including an outer metallic pipe which supports an inner plastic sleeve with mechanical engagement between the plastic sleeve and the metallic pipe throughout the circumference of the sleeve. The metallic pipe has a longitudinal weld and the plastic sleeve is melt-bonded to the metallic pipe along the weld only.