Patents by Inventor Ralf Horstkotter

Ralf Horstkotter 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).

  • Patent number: 5462422
    Abstract: An apparatus for manufacturing a plastic molded part. A plasticized plastic composition is fed to the open mold cavity defined between a lower and an upper mold half. At least one web and perhaps two webs of decorative material to be applied to the molded part extend across the mold cavity. The closing of the mold halves presses the plastic composition against the web or webs. There is at least one two-part clamping frame for resiliently holding the web of decorative material by clamping it outside the mold cavity, so that the web can slip with respect to the composition as the mold halves move together. One clamping frame half is developed with an immersion edge which defines a side edge of the mold cavity and with a cutting plane spaced from the immersion edge a distance sufficient that the frame half also serves as an ejector for the molded part from the mold cavity as the mold halves open apart.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: October 31, 1995
    Assignee: Gebr. Happich GmbH
    Inventors: Andreas Gustavel, Ralf Horstkotter, Rolf Schlenz, Harald Strunk
  • Patent number: 5326523
    Abstract: A method and an apparatus for manufacturing a plastic molded part. A plasticized plastic composition is fed to the open mold cavity defined between a lower and an upper mold half. At least one web and perhaps two webs of decorative material to be applied to the molded part extend across the mold cavity. The closing of the mold halves presses the plastic composition against the web or webs. There is at least one two-part clamping frame for resiliently holding the web of decorative material by clamping it outside the mold cavity, so that the web can slip with respect to the composition as the mold halves move together. One clamping frame half is developed with an immersion edge which defines a side edge of the mold cavity and with a cutting plane spaced from the immersion edge a distance sufficient that the frame half also serves as an ejector for the molded part from the mold cavity as the mold halves open apart.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: July 5, 1994
    Assignee: Gebr. Happich GmbH
    Inventors: Andreas Gustavel, Ralf Horstkotter, Rolf Schlenz, Harald Strunk