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:
Jan. 13, 2004
Filed:
Nov. 26, 2002
Robert F. Singer, Erlangen, DE;
Frank Heinrich, Spardorf, DE;
Carolin Korner, Feucht, DE;
Gerhard Grotzschel, Sternenfels, DE;
Friedrich-Alexander-Universitat-Erlangen-Nurngerg, Erlangen, DE;
Abstract
A method for producing a composite structure in which a foamed metal core ( ) is surrounded with a metal body ( ). The method includes the following steps: a) producing a foamed metal core ( ) with an essentially closed surface; b) introducing the foamed metal core ( ) into a pressure die-casting mold; c) filling the pressure die-casting mold at a first casting pressure (p ); d) reducing the first casting pressure (p ) before the pressure die-casting mold has been filled; e) filling the pressure die-casting mold entirely, the first casting pressure (p ) being reduced to zero or almost zero; and f) applying a second casting pressure (p ) and maintaining the second casting pressure for a predetermined holding period.