System and device for hauling fibre optic cable along a conduit
View Patent ↗A system, device, fiber optic cable and/or method for hauling fiber optic cable along a conduit to a location. The system includes a fiber optic cable including an optic fiber, at least one first strengthening element and at least one second strengthening element, an optic connector attached to the at least one first strengthening element and able to be optically aligned with the optic fiber; and, a hauling shroud, including a cavity to receive the optic connector, a locking mechanism to removably hold the at least one second strengthening element and a member for attaching a hauling rope or cable to pull the fiber optic cable along the conduit.
1. A system for hauling fibre optic cable along a conduit, comprising:
a fibre optic cable, comprising an optic fibre, at least one first strengthening element and at least one second strengthening element;
an optic connector attached to the at least one first strengthening element and able to be optically aligned with the optic fibre; and
a hauling shroud, comprising a cavity to receive the optic connector, a locking mechanism to removably hold the at least one second strengthening element and a member for attaching a hauling rope or cable,
wherein said hauling shroud includes a housing including said cavity and a retaining sleeve removably attachable to said housing and carrying said member,
wherein said locking mechanism comprises a recess in said housing and a crimp lug fitted to said at least one second strengthening element, and
wherein said recess is suitable for housing and trapping said crimp lug when said retaining sleeve is attached to said housing and for releasing said crimp lug when said retaining sleeve is not attached to said housing.
2. The system as claimed in claim 1 , wherein the at least one second strengthening element comprises of polymer fibres.
3. The system as claimed in claim 2 , wherein the polymer fibres are aramid yarns.
4. The system as claimed in claim 3 , wherein the aramid yarns contain a water swelling polymer.
5. The system as claimed in claim 1 , wherein a plurality of first strengthening elements is used.
6. The system as claimed in claim 1 , wherein the first strengthening element is aramid yarns.
7. The system as claimed in claim 1 , wherein two second strengthening elements are used.
8. The system as claimed in claim 1 , wherein said crimp lug is fitted at an end of the at least one second strengthening element.
9. A method of manufacturing a fibre optic cable capable of being hauled to a location via a conduit, comprising the steps of:
producing the fibre optic cable, the fibre optic cable comprising an optic fibre, at least one first strengthening element and at least one second strengthening element;
attaching an optic connector to the at least one first strengthening element and optically aligning the optic connector with the optic fibre;
fitting a crimp lug to said at least one second strengthening element;
locating said optical connector in a cavity of a housing of a hauling shroud and locating said crimp lug in a recess of said housing; and
trapping said crimp lug in said recess by removably attaching to said housing a retaining sleeve provided with a member for attaching a hauling rope or cable.
10. A hauling shroud for hauling a fibre optic cable along a conduit, the hauling shroud comprising a cavity to receive an optic connector capable of being attached to at least one first strengthening element of said fibre optic cable, a locking mechanism capable of removably holding at least one second strengthening element of the fibre optic cable, and a member for attaching a hauling rope or cable,
wherein said hauling shroud includes a housing including said cavity and a retaining sleeve removably attachable to said housing and carrying said member,
wherein said locking mechanism comprises a recess in said housing and a crimp lug fitted to said at least one second strengthening element, and
wherein said recess is suitable for housing and trapping said crimp lug when said retaining sleeve is attached to said housing and for releasing said crimp lug when said retaining sleeve is not attached to said housing.
11. The hauling shroud as claimed in claim 10 , wherein said crimp lug is fitted at an end of the at least one second strengthening element.
12. The hauling shroud as claimed in claim 11 , wherein the retaining sleeve is in threaded engagement with the housing.
13. The hauling shroud as claimed in claim 11 , wherein the retaining sleeve is in resilient clipped engagement with the housing.
14. The hauling shroud as claimed in claim 11 , wherein the retaining sleeve is in sliding engagement with the housing.
15. The hauling shroud as claimed in claim 11 , comprising two or more second strengthening elements, each provided with said crimp lug and two or more associated recesses in the housing.
16. The hauling shroud as claimed in claim 15 , wherein the recesses are staggered.
17. The hauling shroud as claimed in claim 10 , wherein the member is a tongue member with a hole or bore.
18. The hauling shroud as claimed in claim 10 , wherein the member is a cross-bar provided over a recess.
19. The hauling shroud as claimed in claim 10 , wherein a sealing layer is provided at least partially about the shroud and the fibre optic cable.
20. The hauling shroud as claimed in claim 10 , wherein the shroud comprises a moisture absorbing material.
21. The hauling shroud as claimed in claim 10 , wherein the maximum external diameter of the shroud is less than 20 mm.