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:
Jul. 25, 2000
Filed:
Oct. 28, 1998
Applicant:
Inventor:
Delbert L Adkins, Clinton Township, MI (US);
Assignee:
Bundy Corporation, Warren, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ;
U.S. Cl.
CPC ...
138142 ; 138137 ;
Abstract
A multi-wall tube and a method for making the multi-wall metal tube. In the process, a preformed tube is used as an inner core. A metal strip, coated with binding metal, is longitudinally wrapped around the core tube. The assemblage is then heated to the brazing temperature of the binding metal whereby all layers become integral to form the finished multi-wall tube.