Patents by Inventor Karel J. C. de Werk

Karel J. C. de Werk 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).

  • Device for sealing the lower part of a column standing on or in the bottom below a body of water with respect to the surrounding surface of the bottom
    Patent number: 4279545
    Abstract: A device for sealing the lower part of a column standing on or in the bottom below a body of water, comprises a plate-shaped body surrounding the column, the plate-shaped body having a flexible border strip that runs around its entire circumference. The plate-shaped body is rigid and is mounted on a rigid sleeve surrounding the column and extending downwardly in the plate, the walls of the sleeve being parallel to the walls of the column. The body and the strip are of an impermeable material. Erosion of the material of the bottom from around the lower part of the column, under the influence of water currents, is thus retarded.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: July 21, 1981
    Assignee: RSV-Gusto Engineering B.V.
    Inventor: Karel J. C. de Werk