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. 06, 2013
Filed:
Apr. 08, 2011
William L. Johnson, San Marino, CA (US);
Georg Kaltenboeck, Pasadena, CA (US);
Marios D. Demetriou, Los Angeles, CA (US);
Scott Roberts, Pasadena, CA (US);
Konrad Samwer, Goettíngen, DE;
William L. Johnson, San Marino, CA (US);
Georg Kaltenboeck, Pasadena, CA (US);
Marios D. Demetriou, Los Angeles, CA (US);
Scott Roberts, Pasadena, CA (US);
Konrad Samwer, Goettíngen, DE;
California Institute of Technology, Pasadena, CA (US);
Abstract
An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool in combination with an electromagnetic force generated by the interaction of the applied current with a transverse magnetic field. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined 'process temperature' between the glass transition temperature of the amorphous metal and the equilibrium melting point of the alloy in a time scale of several milliseconds or less, at which point the interaction between the electric field and the magnetic field generates a force capable of shaping the heated sample into a high quality amorphous bulk article via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time scale of less than one second.