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. 17, 2010
Filed:
Oct. 19, 2006
Asim Tewari, Karnataka, IN;
Anil K. Sachdev, Rochester Hills, MI (US);
Srinivas Subbarao, Karanataka, IN;
Asim Tewari, Karnataka, IN;
Anil K. Sachdev, Rochester Hills, MI (US);
Srinivas Subbarao, Karanataka, IN;
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method is provided for filling a hollow structure with metal foam. A mixture is made of a metal powder and a foaming agent. An electric resistance heating wire is provided and the mixture is consolidated into a solid preformed charge with the wire embedded in the charge and extending from the ends thereof. The preformed charge is placed into the hollow structure and electric current is applied to the resistance heating wire so that the metal powder is melted and the foaming agent foams the melted metal to fill the hollow structure.