In an injection molding machine the injection molding unit and the mold closing unit are at least are at least partially operated by electrical drives in form of a linear motor. The rotor and the stator have cylindrical surfaces which are arranged concentrically. The stator windings are symmetrical to...http://www.google.de/patents/US6769892?utm_source=gb-gplus-sharePatent US6769892 - Injection molding machine for processing plastics
