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:
Sep. 25, 1979
Filed:
Jul. 07, 1978
Applicant:
Inventors:
Manfred Saier, Wullenstetten, DE;
Hans-Werner Kastner, Vohringen, DE;
Robert Klockler, Tiefenbach, DE;
Assignee:
Wieland-Werke Aktiengesellschaft, Postfach, DE;
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21H / ;
U.S. Cl.
CPC ...
72 71 ; 72 79 ; 72 98 ; 2915 / ; 165184 ;
Abstract
This invention concerns finned tubes for use in heat exchanging whereby the fins have a generally T or Y shape. There is disclosed process and apparatus for making these Y and T-finned tubes whereby a smooth tube is subjected to a rolling process with notching rollers being arranged between rolling discs. Bending rollers can be used to form Y fins and, if desired these can be subsequently flattened into T-fins.