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. 13, 1994
Filed:
Apr. 02, 1993
Applicant:
Inventors:
Wolfgang Knecht, Filderstadt, DE;
Roland Strahle, Unterensingen, DE;
Gerhard Weiss, Nurtingen-Zizishausen, DE;
Assignee:
Langerer & Reich GmbH & Co., Filderstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29890044 ; 29523 ; 165173 ;
Abstract
In a method of making a heat exchanger having a heat exchanger network with a plurality of tubes and at least one base plate having a plurality of passages for tube ends, the passages in the base plate are triangular, and the tube ends are triangular prior to insertion into the base plate. The triangular tube ends are inserted into the triangular passages in the base plate and thereafter expanded to a tight fit.