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. 05, 1991
Filed:
Jul. 13, 1988
Applicant:
Inventors:
Friedrich Garske, Wuppertal, DE;
Bernd Kraft, Wuppertal, DE;
Assignee:
Akzo N.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156282 ; 156293 ; 156297 ; 156311 ; 2103218 ; 21032189 ; 264248 ;
Abstract
A method of welding porous tube ends onto a tube sheet is disclosed, wherein tube ends projecting over the tube sheet are fused into a melt. Part of the melt is conducted to the outside in a radial direction, so that it lies on the end face of the tube sheet. Melt and tube sheet are then welded together. The tube end is preferably cooled from the inside by a metal pin is inserted into the tube end.