Power/fiber hybrid cable

• US 9,472,314 B2
• Filed: 05/14/2014
• Issued: 10/18/2016
• Est. Priority Date: 05/14/2013
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Kachmar, Wayne M., Fahd, Aly, Nardone, Kenneth Christopher, Aguiar, Wagner da Silva, Jacobsen, William J.
• Primary Examiner(s): Kim, Ellen
• Application Number:
  US14/277,347
• Publication Number:
  US 20140338968A1
• Time in Patent Office: 888 Days
• Field of Search: 385/101, 174/70.R, 174/99.R, 174/117.R
• US Class Current: 1/1
• CPC Class Codes: G02B 6/4416 Heterogeneous cables
• CPC Class Codes: G02B 6/44265 Fibre-to-antenna cables; Auxiliary devices thereof
• CPC Class Codes: G02B 6/4431 with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping break-out terminations G02B6/4471
• CPC Class Codes: G02B 6/4434 Central member to take up tensile loads
• CPC Class Codes: G02B 6/4479 Manufacturing methods of optical cables
• CPC Class Codes: H01B 1/026 Alloys based on copper
• CPC Class Codes: H01B 13/14 by extrusion extrusion in general B29C48/00
• CPC Class Codes: H01B 7/009 Cables with built-in connecting points or with predetermined areas for making deviations
• CPC Class Codes: H01B 9/005 including optical transmission elements

Abstract

The present disclosure relates to a hybrid cable having a jacket with a central portion positioned between left and right portions. The central portion contains at least one optical fiber and the left and right portions contain electrical conductors. The left and right portions can be manually torn from the central portion.

Claims

1. A hybrid cable comprising:

an outer jacket having a transverse cross-sectional profile that defines a major axis and a minor axis, the outer jacket having a height measured along the minor axis and a width measured along the major axis, the width being greater than the height such that the transverse cross-sectional profile of the outer jacket is elongated along the major axis;

the outer jacket including a left portion, a right portion and a central portion, the left, right and central portions being positioned along the major axis with the central portion being disposed between the left and right portions, the left portion defining a left passage, the right portion defining a right passage and the central portion defining a central passage;

the outer jacket including a top side and an opposite bottom side separated by the height;

a left electrical conductor positioned within the left passage;

a right electrical conductor positioned within the right passage;

at least one optical fiber positioned within the central passage;

the hybrid cable including a left pre-defined tear location positioned between the central portion and the left portion of the outer jacket and a right pre-defined tear location positioned between the central portion and the right portion of the outer jacket;

the left pre-defined tear location being weakened such that the left portion of the outer jacket can be manually torn from the central portion of the outer jacket, and the left pre-defined tear location being configured such that the left portion of the outer jacket fully surrounds the left passage and the central portion of the outer jacket fully surrounds the central passage after the left portion of the outer jacket has been torn from the central portion of the outer jacket; and

the right pre-defined tear location being weakened such that the right portion of the outer jacket can be manually torn from the central portion of the outer jacket, and the right pre-defined tear location being configured such that the right portion of the outer jacket fully surrounds the right passage and the central portion of the outer jacket fully surrounds the central passage after the right portion of the outer jacket has been torn from the central portion of the outer jacket;

the left and right pre-defined tear locations each including an upper slit that extends downwardly from the top side, a lower slit that extends upwardly from the bottom side, and a non-slitted portion positioned between the upper and lower slits; and

the central portion of the outer jacket having a rectangular transverse cross-sectional shape after the left and right portions of the outer jacket are torn away from the central portion of the outer jacket along the upper and lower slits.

2. The hybrid cable of claim 1, wherein jacket weakening members are embedded in the non-slitted portions.

3. The hybrid cable of claim 2, wherein the jacket weakening members are aligned along the major axis.

4. The hybrid cable of claim 1, wherein the upper and lower slits of the left pre-defined tear location are aligned along a left tearing plane, and wherein the upper and lower slits of the right pre-defined tear location are aligned along a right tearing plane.

5. The hybrid cable of claim 4, wherein the left and right pre-defined tear locations each include a jacket weakening member embedded in the non-slitted portions of the outer jacket between the upper and lower slits.

6. The hybrid cable of claim 5, wherein the jacket weakening members are positioned along the major axis.

7. The hybrid cable of claim 1, wherein the first and second electrical conductors are solid metal or braided metal.

8. The hybrid cable of claim 7, wherein the first and second electrical conductors are solid copper or braided copper.

9. The hybrid cable of claim 1, further comprising a tensile strength structure positioned within the central passage.

10. The hybrid cable of claim 9, wherein the tensile strength structure is bonded to the outer jacket.

11. The hybrid cable of claim 9, wherein the tensile strength structure includes a reinforcing tape.

12. The hybrid cable of claim 11, wherein the reinforcing tape is bonded to the outer jacket and include aramid yarns.

13. The hybrid cable of claim 9, further comprising first and second reinforcing tapes positioned within the central passage.

14. The hybrid cable of claim 13, wherein the first and second reinforcing tapes have longitudinal portions that overlap one another.

15. The hybrid cable of claim 1, wherein a plurality of optical fibers are positioned within the central passage.

16. The hybrid cable of claim 15, wherein no buffer tube is provided in the central passage, and wherein the optical fibers are coated optical fibers without buffer layers.

17. The hybrid cable of claim 16, wherein the coated optical fibers have outer diameters less than 300 microns.

18. The hybrid cable of claim 1, wherein the upper and lower slits are uninterrupted and run continuously along a length of the hybrid cable.

19. The hybrid cable of claim 1, wherein the top and bottom sides of the outer jacket are flat and generally parallel to one another, the top and bottom sides each having a constant thickness.

20. The hybrid cable of claim 5, wherein the jacket weakening members include strands, monofilaments, threads, or filaments.

21. The hybrid cable of claim 2, wherein the jacket weakening members include strands, monofilaments, threads, or filaments.

22. The hybrid cable of claim 1, wherein the upper and lower slits remain fully open after slitting.

23. The hybrid cable of claim 1, wherein a distance between the upper and lower slits measured through the non-slitted portion in an orientation along the height is less than a length of the upper slit measured in the orientation along the height and is also less than a length of the lower slit measured in the orientation along the height.

24. The hybrid cable of claim 23, wherein the outer jacket is made from a material having a composition that includes at least one of the following materials:

a low smoke zero halogen material, a polyvinyl chloride (PVC) material, a fluorinated ethylene polymer (FEP) material, and a material having a polyolefin formulation.