Laying or reclaiming pipes Repairing or joining pipes on or under water

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F16Engineering elements F16LPIPES JOINTS OR FITTINGS FOR PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING MEANS FOR THERMAL INSULATION IN GENERAL

F16L1/00Laying or reclaiming pipes Repairing or joining pipes on or under water

F16L1/024Laying or reclaiming pipes on land F16L1/0243above ground F16L1/0246at a certain height off the ground F16L1/026in or on a frozen surface F16L1/028in the ground F16L1/032the pipes being continuous F16L1/036the pipes being composed of sections of short length F16L1/038the pipes being made in situ F16L1/06Accessories therefor F16L1/065fixed on or to vehicles F16L1/09for bringing two tubular members closer to each other F16L1/10for aligning F16L1/11for the detection or protection of pipes in the ground F16L1/12Laying or reclaiming pipes on or under water F16L1/123Devices for the protection of pipes under water F16L1/126on or close to the surface F16L1/14between the surface and the bottom F16L1/15vertically F16L1/16on the bottom F16L1/161the pipe being composed of sections of short length F16L1/163by varying the apparent weight of the pipe during the laying operation F16L1/165by towing the pipe on or near the bottom F16L1/166Reclaiming pipes F16L1/168under ice F16L1/18the pipes being S- or J-shaped and under tension during laying F16L1/19the pipes being J-shaped F16L1/20Accessories therefor F16L1/201Anchor rods F16L1/202fixed on or to vessels F16L1/203the pipes being wound spirally prior to laying F16L1/205Pipe-laying ships F16L1/206Apparatus for forming or coating the pipes F16L1/207Pipe handling apparatus F16L1/225Stingers F16L1/23Pipe tensioning apparatus F16L1/235Apparatus for controlling the pipe during laying F16L1/24Floats Weights F16L1/26Repairing or joining pipes on or under water F16L1/265Underwater vehicles moving on the bottom