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. 14, 1980
Filed:
May. 25, 1978
Applicant:
Inventor:
Gunther Blumenberg, Hanover, DE;
Assignee:
Kabel- und Metallwerke Gutehoffnungshutte AG, Hanover, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
2281 / ; 285382 ; 285286 ; 219 591 ; 2191 / ;
Abstract
The corrugation is removed from an end portion of a helically corrugated tube, and an internally threaded sleeve is threaded onto the tube. The sleeve has an unthreaded extension which is being drawn by a suitable tool to engage the smooth wall portion of the tube and is subsequently welded thereto.