Pipe, pipe connection and pipeline system
AssigneeCore Linepipe Inc.
InventorsSamuel Glen Bouey, David McLeod, Dave Sheehan
Life of this patent
Estimating the term…
Abstract
A pipeline system is enclosed including unlined or plastic lined pipes. A mechanical metal to metal connection is employed that can provide a fluid tight seal. A pipe coupling may be employed to span the connection. Plastic lined pipes can have their plastic liners connected to form a fluid tight bladder. Electro fusion may be employed.
Claims17
An electro-fusion assembly installed in a metal shell, the electro-fusion assembly prior to electro-fusion including:
- a plastic sleeve within the metal shell, the plastic sleeve including an open inner diameter configured to receive a plastic tubular structure therein;
- an electrical conductor supported by the plastic sleeve;
- an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed on an outer surface of the metal shell;
- and
- a fluid tight seal and an electrically insulative liner between the electrical contact and the metal shell.
An electro-fusion assembly installed in a metal shell including:
- a plastic sleeve within the metal shell,
- an electrical conductor supported by the plastic sleeve;
- an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed on an outer surface of the metal shell and including a bolt and a nut, the nut secured in the plastic sleeve and the bolt positioned with an end exposed on the outer surface and a stem engaged in the nut;
- and
- a fluid tight seal and an electrically insulative liner between the electrical contact and the metal shell.
An electro-fusion assembly installed in a metal shell including:
- a plastic sleeve within the metal shell,
- an electrical conductor supported by the plastic sleeve;
- an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed on an outer surface of the metal shell;
- an o-ring compressed between the electrical contact and the metal shell creating a fluid tight seal;
- and
- an electrically insulative liner between the electrical contact and the metal shell.
An electro-fusion pipe coupling comprising:
- a hollow cylindrical metal wall;
- a plastic sleeve positioned substantially concentrically within and in contact with the hollow cylindrical metal wall;
- an electrical conductor supported by the plastic sleeve;
- an electrical contact for conducting electricity to the electrical conductor, the electrical contact exposed on an outer surface of the hollow cylindrical metal wall;
- and
- a fluid tight seal and an electrically insulative liner between the electrical contact and the hollow cylindrical metal wall.
Dependencies are inferred from the claim text.