Patents by Inventor Jiri Travnicek

Jiri Travnicek 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).

  • Mold for the injection molding of objects of large dimension and complicated surfaces from plastic material
    Patent number: 4295628
    Abstract: Mold for the injection molding of objects of large dimension and complicated surfaces from plastic material without internal stresses and with accurate dimension. In base plates of the mold cooling grids are embedded and the active surface of the base plates is provided with forming plates and forming strips with grooves for heating elements or tempering and cooling means. The mold is provided with mobile cores which change their positions in the course of shrinking of the solidifying plastic material.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: October 20, 1981
    Assignee: Statni vyzkumny ustav materialu
    Inventors: Lubomir Kupf, Jiri Travnicek, Radomil Adamek, Josef Kyzlink