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:
Mar. 02, 2004
Filed:
Aug. 14, 2001
Tatsuo Yoshida, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A concave design forming unit with the desired form is formed on the surface of a molded component for use in injection molding using a low melting point metal material. An injection molding cavity of the predetermined shape is formed from a metal mold, and after mold curing the molten metal, the molded goods are removed from the injection molding cavity. The injection molding cavity is formed by a first metal mold unit and a second metal mold unit, the metal mold having a trapezoidal concave design forming unit with the predetermined height formed on the metal mold inside surface of the first metal mold unit or the second metal mold unit forming said injection molding cavity. The metal mold is heated to a predetermined metal mold temperature, and the molten metal heated to the predetermined molten temperature will be injected into the injection molding cavity of the heated metal mold at the predetermined injection rate. After the injected molten metal injected it is chilled and solidified, the first metal mold unit and the second metal mold unit are separated and the molded component removed from the injection molding cavity.