Patents by Inventor Erik J. Rooduijn

Erik J. Rooduijn 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).

  • Installation for laying a pipeline on a floor located under water, bearing means and terminal
    Patent number: 5575590
    Abstract: The invention provides a method for laying a pipeline on a floor located under water, wherein a pipe string is lowered from the pipe-bedding installation to the floor, characterized in that the part of the pipe string situated between the water surface and the floor is at least partially supported by a bearing surface or trunk tubes which engage on the pipe string, wherein an axial displacement is realized between the bearing surface on the one hand and the pipe string on the other.A heavy pipeline can hereby be laid on a deep sea-bed, for instance at a depth in the order of magnitude of 1-3 km, and/or the capacity of the draw benches on board the pipe-bedding installation can be reduced.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: November 19, 1996
    Assignee: Allseas Group S.A.
    Inventors: Johannes J. C. I. Drost, Erik J. Rooduijn, Albert Ploeg