Patents by Inventor Marcel Freriks

Marcel Freriks 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).

  • Sealing device
    Patent number: 6705375
    Abstract: The present invention relates to a sealing device for using heat to form a weld between a first layer of plastic and a second layer of plastic, provided with heating means for heating the layers of plastic and conveyor means for conveying the layers of plastic past the heating means, and separation means for forming a separating layer between the heating means and the layers of plastic while the latter are being heated, the separation means being displaceable in the direction of movement of the layers of plastic past the heating means. The sealing device according to the invention is characterized in that preheating means are provided for the purpose of preheating the separation means before they are fed to the heating means.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: March 16, 2004
    Assignee: Pieter Theodorus Joseph Aquarius
    Inventors: Anna Maria Aarts, Marcel Freriks, Johannus Henricus Renkens, Johan Henricus Van De Rijt
  • Sealing device
    Publication number: 20030183346
    Abstract: The present invention relates to a sealing device for using heat to form a weld between a first layer of plastic and a second layer of plastic, provided with heating means for heating the layers of plastic and conveyor means for conveying the layers of plastic past the heating means, and separation means for forming a separating layer between the heating means and the layers of plastic while the latter are being heated, the separation means being displaceable in the direction of movement of the layers of plastic past the heating means. The sealing device according to the invention is characterized in that preheating means are provided for the purpose of preheating the separation means before they are fed to the heating means.
    Type: Application
    Filed: July 15, 2002
    Publication date: October 2, 2003
    Inventors: Anna Maria Aarts, Marcel Freriks, Johannus Henricus Renkens, Johan Henricus Van De Rijt