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:
Feb. 22, 2000
Filed:
Nov. 05, 1997
Applicant:
Inventor:
Harry Staschewski, Langenhagen, DE;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
B21C / ; B21C / ;
U.S. Cl.
CPC ...
228147 ; 228148 ; 228 175 ; 242167 ; 242423 ;
Abstract
During the production of long metal tubes with small diameters, where a metal tape is drawn from an annular coil, is gradually formed into a tube with a longitudinal slot and the longitudinal slot is welded, the internally and externally located metal tape ends of a number of annular coils are interconnected by welding, and the annular coils are horizontally positioned on tension rings which are attached to a rotatable take-up drum. The metal tape with the welded ends is drawn off without interruption.