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:
Jun. 22, 1977
Applicant:
Inventors:
Helmut Knulle, Kassel, DE;
Harald Pieschke, Zierenberg, DE;
Assignee:
Schmidt'sche Heissdampf-GmbH, Kassel-Bettenhausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ; F28F / ;
U.S. Cl.
CPC ...
165154 ; 165142 ; 165174 ; 165175 ; 165178 ;
Abstract
A heat exchanger includes banks of double-pipe elements connected to oval headers, the opposite ends of which are connected by round transition elements to main headers. Each oval header and the respective transition elements are formed from a single, integral member, initially a cylindrical pipe, without connecting welds. The outer ends of the transition elements are reduced to form nipple elements for attachment to the main headers. The nipple elements have a greater wall thickness than the transition elements.