Apparatus and method for extracting the core and surrounding insulator from an outer sheath of a length of data transmission cable is disclosed. The apparatus comprises a pump operable to generate hydraulic pressure against one end of the core and insulator, and a drawing mechanism operable to simultaneously exert a pulling force on an opposite end of the core and insulator. The arrangement being such that hydraulic pressure applied to one end, and pulling force applied to the opposite end, together displace the core and insulator relative to its outer sheath.

Autonomous fluid compressor for supplying compressed fluid to a cable laying device, the fluid compressor comprising a fluid compressing unit arranged to compress fluid and comprising an exhaust valve, an electric motor, for driving the fluid compressing unit, a rechargeable power unit, to supply electric power to the electric motor, a fluid supply port connected to the exhaust valve, characterized in that the fluid compressor including an input unit, for receiving a fluid demand signal indicating a fluid demand from the cable laying device, and a control unit, arranged to control the motor based on the fluid demand signal.

A method of installing a cable through a duct by blowing the cable with a stream of compressed air. The method comprises dispersing a nebulized lubricant in the stream of compressed air, causing the stream of compressed air to deposit the nebulized lubricant onto the cable and to blow it into the duct. An apparatus for carrying out the method is also disclosed.

Method for installing a cable into a duct, comprising the steps of: determining a maximum pressure, setting a leaking mode of a leaking plug to start at a leaking pressure drop equal to or lower than the maximum pressure, attaching the leaking plug to a foremost end of the cable, introducing the foremost end of the cable into the duct, supplying a pressurized liquid into the duct: at a supply port, and at a supply pressure, so that the cable is pulled by the leaking plug, before the foremost end has reached the second extremity, exceeding the leaking pressure drop at a location close to the leaking plug.

The present disclosure relates to an apparatus (1) for installing a cable (2) in a duct (3). The apparatus comprises a blowing chamber (4) comprising a cable inlet and a cable outlet and a fluid inlet for receiving a supply of pressurized fluid, wherein the cable outlet is configured to be connected to the duct (3). The apparatus moreover comprises a pushing drive unit (50). Additionally, the apparatus comprises a first drive device (10) comprising a first conveyer pant (16a) and a second drive device (20) comprising a second conveyer pant (16b), wherein said conveyer pants (16a, 16b) are arranged at opposing sides of a cable guidance space (13) and wherein one or both conveyer pans (16a, 16b) are configured to induce a driving force (F1) onto apart of the cable arranged in the cable guidance space (13). One or both of the first and second conveyer pan (16a, 16b) is configured to be moved towards and away from the cable guidance space (13), and one or both of the first and second drive device (10, 20) comprises a base pan (a, 20a) at which the conveyer part (16a, 16b) is mounted. One or both of the first and second drive device (10, 20) comprises a coupling arrangement part (14a) configured to engage with a drive arrangement part (15) of the apparatus (1), wherein the drive arrangement part (15) is configured to be driven by the pushing drive unit (50). The base part (10a, 20a) is disconnectably connected to a socket part (30) of the apparatus (1) and is maintained in a locked position by means of a locking system (31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, 36, 17). The coupling arrangement part (14a) engages with the drive arrangement part (15) of the apparatus (1) when the base part (10a, 20a) is connected to the socket part (30) in the locked position. The disclosure moreover relates to a drive device, a set of drive devices and a method.

An apparatus including a blowing chamber having a cable inlet, a cable outlet, and a fluid inlet, wherein the cable outlet is configured to be connected to the duct. A pushing drive, a first conveyer part and a second conveyer part, wherein the conveyer parts are arranged at opposing sides of a cable guidance space and wherein one or both conveyer parts are configured to be driven by the pushing driveand thereby induce a driving force onto a part of the cable arranged in the cable guidance space, wherein one or both of the first and second conveyer part is configured to be moved towards and away from the cable guidance space. A clamping force control that controls the clamping force applied onto the cable by the conveyer parts according to a first clamping setting while the driving force is applied onto the cable.

A transmission line installation system includes a transmission line conveying apparatus that operates to install a transmission line within a conduit by advancing the transmission line through the conduit. The transmission line conveying apparatus includes a plurality of components. The components include local controllers. Communication with the local controllers of the components synchronizes operation of the components during the installation of a transmission line.

Methods for installing a signal cable through a coiled tubing strand include installing a front end bullet at a leading end of the signal cable and dissolvable bullets at intermediate locations along the signal cable. A pushing fluid is injected into the coiled tubing strand to apply a drive force to both the front end bullet and the dissolvable bullets to thereby advance the signal cable through the coiled tubing strand. Once the front end bullet passes through the coiled tubing strand, the front end bullet may be removed, and a solvent fluid is injected to remove the dissolvable bullets inside coiled tubing strand. The dissolvable bullets permit the pushing fluid to greater drag forces to advance the signal cable, while reducing the friction generated between the signal cable and an inner wall of the coiled tubing strand that usually act in a direction opposite the drag forces.

An apparatus and methods for pushing conductors into conduit and other structures are disclosed. The apparatus (pusher) can include rollers to apply a pushing force to one or more conductors or bundles of conductors. One or more rollers can be coupled to a drive mechanism. The pusher is configured to pull conductors or bundles of conductors off of one or more spools, and push the conductors or bundles of conductors without de-bundling or sorting the conductors. The conductors can be fed through the pusher in any format including side-by-side, vertical on top of one another, twisted together, or other formats. The pusher can include a guiding device that is configured to route the conductors from the pusher to a conduit through which the conductors are being pushed or pulled.

The present disclosure relates to a high-pressure feedthrough for feeding through a coaxial cable from a low-pressure zone into a high-pressure zone, wherein the high-pressure feedthrough has a support structure having at least one elongate bore that extends from a low-pressure side of the support structure up to a high-pressure side of the support structure; wherein the elongate bore is suitable for receiving at least the inner conductor of a coaxial cable that can be continuously fed through the elongate bore from the low-pressure side to the high-pressure side; and wherein the high-pressure feedthrough has one or more components that serve in the axial direction of the elongate bore as an outer conductor and/or dielectric of the inner conductor of the coaxial cable fed through the elongate bore.