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. 09, 1996
Filed:
Mar. 28, 1994
Applicant:
Inventor:
Roland Fink, Winterbach, DE;
Assignee:
Oskar Frech GmbH & Co., Schorndorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164312 ; 164319 ;
Abstract
Pressing-in devices of pressure die casting machines operate as hydraulically driven multiphase as pressing-in systems in order to exercise a different pressure on the casting material during different phases of the casting operation. The casting piston of a pressing-in device is driven by at least one electric motor. In this case, the drive advantageously takes place using a multispeed servomotor which interacts with a multiple-roll spindle.