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:
May. 12, 1987
Filed:
Feb. 27, 1986
Applicant:
Inventor:
Edvin L Clausen, Tonder, DK;
Assignee:
Norsk Hydro A.S., Oslo, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21K / ; B23P / ;
U.S. Cl.
CPC ...
291574 ; 2915 / ; 72254 ; 72264 ; 72370 ; 165173 ; 165176 ;
Abstract
A method of manufacturing integrated manifolds for heat exchangers include providing hollow shape with a plurality of individual risers each having a substantially solid cross-section. Subsequently, the risers are reshaped by means of a reverse impact extrusion process into hollow risers. Finally, by perforating the wall of the hollow shape under the hollow risers, apertures are provided constituting inlets connecting the cavity of the hollow shape with the individual hollow risers.