Patents by Inventor Roger F. Bartoli

Roger F. Bartoli 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).

  • Fabricating shaped laminated transparencies
    Patent number: 4504341
    Abstract: The present invention relates to the simultaneous shaping and lamination of lightweight laminated transparencies, particularly those that are suitable for use in aircraft. The plies of an assembly to be shaped and laminated are assembled with additional elements to form a flexible cell of air impervious material. The cell includes an air impervious flexible wall defining a peripheral space around the assembly and porous material in the space. The cell containing the assembly is mounted over a vacuum mold and heated to sag the cell and its assembly to the contour of the mold while evacuating the cell while the cell and said assembly are exposed to atmospheric pressure.The cell is cooled while still under evacuation until the shape of the assembly is set, then is separated from the vacuum mold. The resulting assembly thus shaped and laminated is separated from the cell.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 12, 1985
    Assignee: PPG Industries, Inc.
    Inventors: John E. Radzwill, Roger F. Bartoli