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. 30, 1985
Filed:
Sep. 09, 1983
Thomas A Lesniak, South Bend, IN (US);
Ex-Cell-O Corporation, Troy, MI (US);
Abstract
A heat exchanger wherein the tubes are connected to the headers by soldering. Specifically, the tubes extend through and a predetermined distance beyond vertically flanged openings in a header. The tubes include vertical slits formed in a spaced relationship in opposite side walls thereof in the end portion which extends beyond the header flanges. The wall portion between the slits is folded in a curled configuration toward the vertical flanges until the edges of the curled wall contact the flanges. Solder is applied by capillary action between the tubes and the inner surfaces of the flanges and in the space between the outer surfaces of the flanges and the curled tube portions.