A pipe (100) comprises a first connector fitting (102) and a second connector fitting (104) downstream of the first. The fluid pressure within the pipe (100) is substantially equalised to the air pressure within the first connector fitting (102). Then a draw wire (4), fitted with a sail structure (6) is inserted through the first connector fitting (102). Fluid flow within the pipe (100) acts upon the sail structure 6 to move the draw wire (4) along the pipe (100) in towards the second connector fitting (104) where an extraction member (108) is inserted. The extraction member (108) is used to withdraw the draw wire (14) through the second connector fitting (104). The draw wire (4) is attached to a first end of a micro-duct (110) and thus a pulling mechanism (114) can act on the draw wire 4 to introduce the micro-duct (110) into the pipe (100) between the connector fittings (102, 104).

A pipe connector fitting 2 comprises first and second connectable sections 4, 6 which when positioned together form a substantially cylindrical configuration comprising a hollow interior 8 for enclosing a portion of a fluid pipe, in use. The first section 4 additionally comprises a protruding tube 10 which has a bore 12 providing access to the hollow interior 8 of the fitting. In use, the first section 4 and second section 6 are placed coaxially about a fluid pipe and are brought into a abutting relationship. Nut and bolt connections 18, 20 are used to secure the first and second sections 4, 6 about the fluid pipe via flanges 14, 14, 16, 16. The bore 12 allows for the insertion of one or more elongate flexible members, such as a cable into a fluid pipe via a corresponding opening provided in the pipe.

The present disclosure relates to the installation of transmission lines. The present disclosure relates to various advancement devices for continuously advancing a transmission line and methods for advancing a transmission line using an advancement device. In embodiments, the advancement device for continuously advancing a transmission line within a transmission line installation system includes an inlet configured to receive a transmission line from a transmission line source and guide the transmission line to an advancement assembly. The advancement assembly may be coupled to the inlet and configured to receive the transmission line and pressurized fluid from the inlet. The advancement assembly may include a continuous air feed configured to receive secondary pressurized fluid from a secondary pressurized fluid source. It may include an outlet configured to receive the transmission line and pressurized fluid from the advancement assembly and advance the transmission line and pressurized fluid within the transmission line installation system.

A transmission line guide apparatus for advancing a transmission line through an access point, an advancement device for advancing a transmission line, and method for advancing a transmission line are disclosed. These disclosures may be used in the installation of a variety of transmission lines into a conduit, pipe, duct, or the like, including fiber optic cables and electrical transmission lines. In an embodiment of the disclosure a transmission line guide apparatus for advancing a transmission line through an access point may include a first conduit segment, with a first and second end, configured to couple to a conduit at an access point first end, a second conduit segment, with a first and second end, configured to couple to the conduit at an access point second end, and an advancement device. Further, the first and second conduit segments may be configured to couple to the advancement device.

The present disclosure relates to the installation of transmission lines with a transmission line advancement system. The transmission line advancement system is configured to install a variety of transmission lines into a conduit, pipe, duct, or the like, including fiber optic cables and electrical transmission lines. Furthermore, the present disclosure generally relates to a transmission line speed adjustment system for synchronizing a first location speed and a second location speed, a method for synchronizing a transmission line first location speed with a transmission line second location speed, and another transmission line speed adjustment system for synchronizing a first location speed and a second location speed.

A cable-jetting installation sleeve can be used to advance a fiber-optic cable through a conduit. The cable-jetting installation sleeve can include a housing and an expandable section. The expandable section can include an opening which can be expanded to receive or remove an end of the cable and contracted to engage the cable with the expandable section. A parachute can be positioned on one end of the cable-jetting installation sleeve. The parachute can be pushed by compressed air in the conduit to advance the cable-jetting installation sleeve through the conduit.

An integrated seal used in an air block of a transmission line conveying apparatus comprising: a ring-shaped front sealing member; a hollow cylindrical rear sealing member, the hollow cylindrical rear sealing member and the ring-shaped front sealing member sharing a central axis; and a connecting sealing member connecting the ring-shaped front sealing member and the hollow cylindrical rear sealing member.

A reduced diameter composite microcable of low weight that is capable of withstanding a tensile load of at least 300 pounds with less than 0.6% fiber strain, is capable of operation between ?40 C and 70 C with less than 0.1 dB/km attenuation change at 1550 nm, and whose outer diameter is less than 15 mm is provided. The microcable includes at least one buffer tube, at least one electrical power conductor, at least one rigid strength member cabled together into a multi-unit core, wherein a plurality of optical fibers are placed within the at least one buffer tube.

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.

The manifold is provided with a first cable passage at a first longitudinal position and a second cable passage at a second longitudinal position, wherein a releasable pipe segment is present between the first and the second longitudinal positions. It is suitable for use in a pipe, such as a pressure sewer. In use, a cable would be laid through the pipe with the manifold. Thereafter, the releasable pipe segment would be removed from neighboring pipe shells. The cable would be inserted into the cable passages, and a second pipe segment would replace the initial pipe segment.