Subterranean Or Submarine Pipe Or Cable Laying, Retrieving, Manipulating, Or Treating Patents (Class 405/154.1)
  • Publication number: 20020025228
    Abstract: A device for digging and backfilling of ditches, in particular for laying pipes, comprising an automotive travelling mechanism (2) carrying a machine frame (4) with an upper structure, a boom (6) pivoted on the machine frame (4) and having a plurality of boom arms (8, 10, 12) connected with each other with hinges and an excavator bucket (16) pivoted on the free end of the boom (6) is provided with a milling/mixing rotor (22) mounted to the excavator bucket (16).
    Type: Application
    Filed: November 5, 2001
    Publication date: February 28, 2002
    Inventor: Dieter Simons
  • Patent number: 6350085
    Abstract: A cable deployment system and method for laying a cable on the sea floor. The cable deployment system includes a cable having a first cable section connected to a riser cable section. The riser cable section includes an armor that is connected to a drum capable of containing a required length of the first cable section. A stinger is attached to the drum and shaped to allow the first cable section to exit the drum. The cable deployment system also includes a tensioning device attached to the drum. The tensioning device is capable of maintaining a tension in the first cable section during deployment of the first cable section from the drum. The method of deploying the cable in deep water from a surface vessel includes the steps of containing the first cable section within the drum and lowering the drum from the surface vessel. An end of the first cable section is secured to the sea floor and the first cable section is deployed from the drum onto the sea floor.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: February 26, 2002
    Assignee: Sonsub International, Inc.
    Inventors: William R. Bath, Gary L. Holtz, Frank Sayle, Charles R. Yemington
  • Patent number: 6332738
    Abstract: A fiber optic cable (10) is buried below ground, either by direct burial, or by being pulled through a previously buried duct. During cable burial, the instantaneous resistance between the sheath and ground (the sheath-to-ground resistance) is continuously monitored. If the instantaneous sheath-to-ground resistance drops below a prescribed value, an alarm is generated, signaling a sheath fault. During burial, the length of cable paid out and placed underground is monitored, thus providing an indication of the relative location of the sheath fault.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: December 25, 2001
    Assignee: AT&T Corp.
    Inventors: Hossein Eslambolchi, John Sinclair Huffman
  • Patent number: 6315498
    Abstract: A method and apparatus have been developed which inserts and withdraws tubing from pipes without bending or kinking the tubing. Beneficially, the method and apparatus may be employed to insert and withdraw tubing to depths greater than ever possible before. The method involves using a thruster pig to provide force to inject the tubing. The thruster pig uses a pressure differential to urge the tubing into and out of the pipe. Advantageously, check valves or relief valves allow fluid to be pumped down the tubing and out the front of the thruster pig, and then to flow back through the valves and up the annulus between the pipe and the tubing.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: November 13, 2001
    Assignee: Superior Energy Services, LLC
    Inventors: Benton F. Baugh, James R. Crawford
  • Patent number: 6305879
    Abstract: A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive devices carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground surface, the first and second motive devices defining a centrally-disposed excavation work area therebetween, and an excavating auger mounted on the chassis in the excavation work area forwardly of the rear portion of the chassis and rearwardly of the forward portion of the chassis for penetrating and excavating a ditch in the ground as the chassis is driven along the ground, said auger defining a pivot point about which the first and second motive devices are adapted to rotate the chassis to control the direction of ditch excavation.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 23, 2001
    Inventor: Todd H. Greenwood
  • Publication number: 20010024597
    Abstract: A device (6) for attachment to a pipe (7 to be installed in the ground has load cells (17) for detecting a pulling force applied to the pipe (7), as the latter is pulled through the ground, an inclinometer (18), for detecting the inclination of the device (6), and a pressure transducer (20) for detecting the pressure surrounding the device. Data representative of the pulling force, inclination and pressure is stored in the device (6) and protected against unauthorised access by a security code or procedure, so that a verifiable record of the pipe installation process is available.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 27, 2001
    Inventors: Simon Charles Coote Turner, Martin David Warner
  • Publication number: 20010012477
    Abstract: A method of replacing damaged parts of wastewater channels with inserted parts, e.g. optical cables, includes removing a section of the channel, positioning a lower half-shell (1) below the inserted part (2) at the removed section of the channel, passing an attachment element (3) having two ends (3a, 3b) around the inserted part (2), feeding the attachment element (3) through at least one opening (4, 6) of an upper half shell (5), placing the upper half shell (5) on the lower half shell (1), attaching the upper half shell (5) to the lower half shell (1), attaching the upper and lower half shells (5, 1) to neighboring channel sections, pulling the ends of the attachment element (3) tight to press the inserted part (2) against the inner surface of the channel, and filling the opening (4, 6) with a sealing compound (7).
    Type: Application
    Filed: December 8, 2000
    Publication date: August 9, 2001
    Inventors: Wilhelm Gaebelein, Michael Roeling