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:
Apr. 27, 1982
Filed:
Jan. 21, 1980
Applicant:
Inventor:
Wallace C Rudd, New Canaan, CT (US);
Assignee:
Thermatool Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28F / ;
U.S. Cl.
CPC ...
165183 ; 2915 / ;
Abstract
A method of removing ripples from the metal sheet portion of a heat exchanger panel element which is manufactured by joining a metal tube to a metal sheet by means of heated and cooled weld metal, and the product of the method. In the method, the sheet is corrugated, after the tube is joined thereto, without stretching the metal of the sheet by more than 2% so that the sheet length with corrugations is substantially equal to the length of the tube joined thereto.