Patents by Inventor Troels Erstad

Troels Erstad 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: 4842075
    Abstract: A subsea flowline connection system wherein a terminal connector on a flowline is pulled by a cable into a funnel on a connector base structure. The upper and lower 5 surfaces of the terminal and funnel cooperate to align the component in the vertical plane. The terminal has curved vertical sides which make only line contact with straight vertical walls in the funnel to deliberately allow limited, misalignment (.+-.6.degree.) between the components in the horizontal plane as the terminal is drawn into the funnel. Securing device is then installed between the misaligned components to lock them together in that position. A pull-in tool is provided which is lowered onto the base and includes a pull-in cable for drawing the terminal into the funnel and a device for installing the securing device which lock the components together.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: June 27, 1989
    Assignees: Mobil Oil Corporation, Kvaerner Engineering A.S., Den Norske Stats Oljeselskap A.S.
    Inventors: Bjorn K. Kalvenes, Oyvind Guthormsen, Troels Erstad