Patents by Inventor Geert De Doncker

Geert De Doncker 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 element for feeding through at least one elongated object such as wire and a vacuum apparatus provided with one or more of sealing elements
    Patent number: 5050416
    Abstract: The invention relates to a sealing element to be applied when feeding at least one elongated object through a vacuum apparatus, the sealing element comprising a casing with a first detachable part having a projection on its underside that tapers from a first end of the casing to a second end of the casing and a second detachable part having a hollow portion that tapers from the first end of the casing to the second end. The projection fits in and partially fills the hollow portion creating a gap between the projection and the hollow portion. The second detachable part has a groove around a portion of its perimeter on an upper surface which contains a resilient sealing means that allows the first and second detachable parts to be sealed when abutted against one another.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: September 24, 1991
    Assignee: N.V. Bekaert S.A.
    Inventors: Guy Gobin, Geert De Doncker, Alex Colpaert, Norbert Van Wassenhove, Robert Hoogewijs, Lucien Fiermans, Roger De Gryse, Joost Vennik