Patents by Inventor Erich Schmidhalter

Erich Schmidhalter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for introducing injection material into a mold
    Patent number: 5660864
    Abstract: By embodying a feed screw (17) for glass fiber reinforced polyester material with a hollow shaft, it is possible for the injection piston (11) for an injection unit (9) to have a compact structure so as to be passed through the feed screw (17). To process even viscous polyester compositions gently, the injection piston can be equipped with a plasticizer screw and an associated plasticizer motor.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: August 26, 1997
    Assignee: Bucher-Guyer
    Inventor: Erich Schmidhalter