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:
May. 10, 1988
Filed:
Oct. 17, 1986
Daniel Brunnschweiler, Oberuzwil, CH;
Alfred Hagmann, Speicher, CH;
Leo Iten, Wil, CH;
Leo Strotz, Wil, CH;
Walter Uhlmann, Morschwil, CH;
Gebruder Buhler AG, Uzwil, CH;
Abstract
An injection unit for an injection molding or die-casting machine comprises an injection ram which injects molten material out of an injection sleeve into a mold or die during a filling phase. This injection ram is connected to a drive piston which is movable within a drive cylinder for actuating the injection ram. The whole ram unit, comprising the injection ram and the drive piston, consists of at least two parts releasably connected together. A control device for the movement of the injection ram during the different phases of injection comprises a control valve. A signal transfer arrangement is interconnected between this control valve and the ram unit which is provided with a damping arrangement so that its releasably connected parts are movable relative to each other.