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:
Mar. 24, 1998
Filed:
May. 24, 1995
Applicant:
Inventors:
Myron R Randlett, Cuba, MO (US);
Jerome M Dupy, Cuba, MO (US);
Assignee:
Olin Corporation, East Alton, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138171 ; 138 38 ; 138142 ; 138177 ;
Abstract
An externally and internally enhanced welded tube formed from a strip having a thickness b. The tube includes an inner wall enhanced with a first desired pattern having a thickness of a. An outer wail is enhanced with a second desired pattern, the second desired pattern having a thickness c. The weld fusing a portion of adjacent longitudinal edges of the strip wherein a weld bead associated with said weld is recessed within said desired patterns, does not extend beyond said desired patterns, and the length of said portion of said adjacent longitudinal edges that is fused together is from about (b+0.05a+0.05c) to about (b+0.2a+0.2c).