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:
Aug. 15, 1989
Filed:
Feb. 22, 1988
Applicant:
Inventor:
Edvin L Clausen, Tonder, DK;
Assignee:
Norsk Hydro a.s., Oslo, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F28F / ;
U.S. Cl.
CPC ...
2851371 ; 291574 ; 165173 ; 165176 ; 72267 ; 285188 ; 285189 ;
Abstract
An integral manifold for a heat exchanger is formed from a hollow shape having a plurality of individual risers, initially having substantially solid cross-sections and subsequently reshaped by means of a reverse impact extrusion process into hollow risers. The walls of the hollow shape under the hollow risers are perforated, thus forming apertures constituting inlets connecting the cavity of the hollow shape with the individual hollow risers.