Patents by Inventor Leopold Antonius Maria Crispinus van den Assum

Leopold Antonius Maria Crispinus van den Assum 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).

  • Marine pipe laying system, method and hoisting device
    Patent number: 7563055
    Abstract: Marine pipe laying systems and methods including a hoisting device for laying an offshore pipeline are disclosed. The hoisting device includes a tower with a tower top side provided with cable pulleys and a moveable traveling block displaceably attached to the tower. The traveling block includes first and second blocks with cable pulleys. A clamp attaches to the first block for holding pipe sections and lowering pipelines after the pipe section connects to the pipeline. The hoisting device includes a hoisting means including hoisting cable and a winch. The hoisting cable can be guided over the cable pulleys on the tower and the traveling block. The first and second blocks are adapted to be releasably coupled for traveling along the tower as a unit and for supporting greater pipeline weights. The second block can be locked to the tower to remain stationary while the first block travels along the tower.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: July 21, 2009
    Assignee: ITREC B.V.
    Inventors: Joop Roodenburg, Terence Willem August Vehmeijer, Leopold Antonius Maria Crispinus van den Assum