Patents by Inventor Robert Demarle

Robert Demarle 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: 4705660
    Abstract: To produce a pipe in a centrifugal molding process in a rotating mold, axially parallel oriented fibers are fed in parallel to the axis of the mold, decelerated in the mold, and accelerated, without a change in their orientation, transversely to their feeding direction. A device for performing this process comprises a chamber (3) which can be introduced into a rotating mold (14) and has an outlet opening (10) for cut fibers. In the chamber (3), a rotatable vane (5) is provided which is connected a disk (9) oriented transversely to the axis of rotation (8) of the vane, this disk lying in opposition to the feed conduit (1) for fiber material (2) terminating in the chamber (3). The surfaces of the vane are parallel to its axis of rotation, and so the orientation of the fibers parallel to that axis is maintained.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: November 10, 1987
    Inventor: Robert Demarle