Embodiments and methods relate to pulling and installing a product line along an underground arcuate path beneath an obstacle, including pulling the product line for an extended length (i.e. a length that might otherwise be deemed impracticable) along the underground arcuate path beneath the obstacle. A sealing/locking mechanism is located at one end of an outer pipe and at an end of an inner pipe at a position within the underground arcuate path.

An electrical wire pulling device is for pulling wire through a conduit and includes a T-shaped hollow body including a side inlet transversely intersecting a path between a top inlet and a bottom outlet, and a constrictor adjacent the side inlet. A pulling line source, including a supply of pulling line, is positioned adjacent the top inlet and configured to supply the pulling line into the top inlet and out the bottom outlet. A constrictor has a tapered section tapering towards the bottom inlet. The bottom outlet is positioned adjacent the first end of the conduit. The side inlet is coupled to a fluid source to supply a fluid into the hollow body to be pushed downward towards the bottom outlet and create a pressure differential that draws the pulling line towards the bottom outlet and into the conduit.

A headlock cable installation system includes a headlock assembly, an extension rod, and a flexible headlock cable. The headlock cable installation system is used for installing a pre-connectorized cable assembly. The headlock assembly defines a cavity configured to receive a connectorized end of the pre-connectorized cable assembly. The flexible headlock cable has opposite first and second ends. The first end of the headlock cable is coupled to the headlock assembly, whereas the opposite second end of the headlock cable is adjustably coupled to the extension rod. Adjustment of the second end varies a position of the headlock assembly relative to the extension rod.

Novel tools and techniques for new cable provisioning utilizing an applied physical process are provided. A system includes a physical process applicator and a first coupler. The first coupler may be configured to attach to a first end of a first cable. The physical process applicator may be configured to apply a physical process to the first cable, and tension the first cable, via the first coupler. The first coupler may further be configured to cause, via the physical process, the first cable to displace at least some ground material surrounding the first cable, and allow at least part of the first cable to be removed.

A pull-in head assembly (8) for releasably connecting a pulling arrangement (112) to an elongate flexible structure (4, 6). The pull-in head assembly (8) comprises a body (30) which defines a pulling axis X of the pull-in head assembly (8) and a retaining member (32) arranged around the pulling axis X. The retaining member (32) is configured to secure the pull-in head assembly (8) to an elongate flexible structure (4, 6) such that, in use, a pulling force exerted on the pull-in head assembly (8) along the pulling axis X is transferred to the elongate flexible structure (4, 6). The retaining member (32) is configured to release the pull-in head assembly (8) from the elongate flexible structure (4, 6) when the pulling force exceeds a predetermined threshold such that the pull-in head assembly (8) can be separated from the elongate flexible structure (4, 6).

A pull-in head assembly (8) for releasably connecting a pulling arrangement (112) to an elongate flexible structure (4, 6). The pull-in head assembly (8) comprises a body (30) which defines a pulling axis X of the pull-in head and a retaining member (32) which is configured to secure the pull-in head assembly (8) to an elongate flexible structure (4, 6) such that a pulling force exerted on the body (30) along the pulling axis X is transferred to the elongate flexible structure (4, 6). The pull-in head assembly (8) is configured such that, in use, the body (30) and the elongate flexible structure (4, 6) are rotatable with respect to each other about the pulling axis X.

A pull-in head assembly (8) for releasably connecting a pulling arrangement (112) to an elongate flexible structure (4, 6). The pull-in head assembly 8 comprises a pull-in head having a body (30) which defines a pulling axis X of the pull-in head. The body (30) has a front end and a rear end and a bore (48) which extends through the body (30) along the pulling axis X. The bore (48) is configured such that a pulling line (28) can be threaded through the body (30).

A system and method for improving the efficiency and effectiveness of installing and pulling microducts through subterranean pathways is provided. The system includes a device that is placed over at least one microduct and secured through tapered screws that enter through the end cap of the body of the device and into at least one microduct. The tapered screw both expands the microduct, pressing it against the inner wall of the body and guide rod, as well as securing the microduct to the cap end of the body. Securing the microducts against seal provides further protection from water, debris, and other contaminants, and the expansion of the microducts provides friction and adherence to the body, aiding in keeping microducts in place. The device further includes a pulling apparatus connected to the device body, allowing it to be connected to a pulling mechanism for installation of the microducts.

Various break-resistant anode assemblies and method of installing the same in the ground are disclosed. Each anode assembly basically comprises an anode, at least one pulling cable, and a protective nose cone. The nose cone is a hollow member receiving the leading end of the anode and from which the anode's electrical conductor extends. The nose cone includes a tapered leading surface that facilitates and guides the anode assembly as it is pulled through the ground, while protecting the anode. A break-away mechanism may also be provided to ensure that no more than a maximum pulling force is applied to the anode assembly during its installation to ensure that the anode is not damaged.

A swivel coupling assembly includes a first elongated head to which a first cable is connectable and a second elongated head to which a second cable is connectable. A flexible tension member includes one end section which extends through the first head and is prevented from passing out of the first head toward the second head, and the tension member includes an opposite end section which extends through the second head and is prevented from passing out of the second head toward the first head. The first head, the second head and the tension member are capable of being rotated relative to one another, and the flexible tension member possesses a length sufficient to permit the first and second heads to be moved relative to one another between a position at which the longitudinal axes of the first and second heads are substantially aligned and a position at which the longitudinal axes of the first and second heads are oriented at substantially a right angle.