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. 19, 1989
Filed:
Jul. 06, 1988
Applicant:
Inventor:
Christian Greune, Furstenfeldbruck, DE;
Assignee:
Motoren-Und Turbinen-Union Munchen GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D / ; B22C / ; B22F / ; B21D / ;
U.S. Cl.
CPC ...
249 83 ; 249 95 ; 249 97 ; 249145 ; 249148 ; 249151 ; 249156 ; 249176 ; 249184 ; 2915 / ; 2915 / ; 2915 / ; 291574 ; 425 78 ; 425117 ; 425577 ;
Abstract
Apparatus for the production by powder metallurgy of a heat exchanger block in which two spaced concentric half shells are provided with holes in which profiled pipes are inserted. The profiled pipes are internally supported by pins when metal powder is injected into the hollow space between the half shells for forming a wall section of a header. The radially outer half shell is formed by a plurality of half rings arranged with their side faces in contact with one another and the half rings are individually removed after the wall section is formed.