Patent 7449139 was granted and assigned to Husky Injection Molding Systems on November, 2008 by the United States Patent and Trademark Office.
Disclosed is a molding-system platen actuator, including: (a) a platen-stroke actuator including: an electrical actuator, and a guide bushing being connected with the electrical actuator; and (b) a mold-break actuator being in-line with the platen-stroke actuator, the mold-break actuator including: a hydraulic actuator having: a piston being strokable along an in-line housing, and air pressure being generatable between the piston and the guide bushing, and the air pressure being useable to push the piston backwardly.