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. 16, 1994
Filed:
Apr. 10, 1992
Manfred Miese, Ettlingen, DE;
Johann Holzschuh, Meinerzhagen, DE;
Battenfeld GmbH, Meinerzhagen, DE;
Abstract
A displacement and/or actuating force drive device for an injection molding machine, for example, for actuation of the push-type screw of a plasticizing extruder or the closing unit of an injection mold, comprises generally a hydraulic stroke drive, in tandem in rows or in series with a mechanical stroke spindle system driven by a brushless three-phase servomotor type electromotor. The motor is associated with a positioning regulation device dependent upon the closing and opening position of the injection mold. The hydraulic stroke drive can be actuated from a pressure regulation circuit by a servo valve. The circuit depends upon the closing force between the two mold halves of the injection mold.