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. 21, 2004
Filed:
Oct. 29, 2001
Applicant:
Inventor:
Roland Fink, Winterbach, DE;
Assignee:
Oskar Frech GmbH & Co., Schorndorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 1/704 ; B22D 1/732 ; B22D 2/702 ;
U.S. Cl.
CPC ...
B22D 1/704 ; B22D 1/732 ; B22D 2/702 ;
Abstract
A method of operating a hot-chamber diecasting machine is provided in which, after the filling of the mold, a compressional vibration is generated which prevents the molten metal from rapidly solidifying at least in the narrowest cross-section of the feed orifice between the ascending bore and the mouthpiece and the mold. In this manner, it becomes possible to increase the afterpressure upon the molten metal in the mold in comparison to conventional hot-chamber diecasting processes in order to achieve cast parts of a higher quality.