I-SHAPED FILLER

• US 20190096545A1
• Filed: 01/24/2018
• Published: 03/28/2019
• Est. Priority Date: 09/28/2017
• Status: Active Grant

• Current Assignee: Sterlite Technologies Limited (Volcan Investments Ltd.)
• Original Assignee: Sterlite Technologies Limited (Volcan Investments Ltd.)
• Inventors: Kaczmarski, Andrew, Bhatt, Darshana
• Granted Patent: US 10,553,333 B2
• Time in Patent Office: Days
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
• CPC Class Codes: H01B 11/08 Screens specially adapted for reducing cross-talk
• CPC Class Codes: H01B 3/30 plastics; resins; waxes
• CPC Class Codes: H01B 7/385 comprising a rip cord or wire

Abstract

The present disclosure relates to a telecommunications cable. The telecommunications cable includes a plurality of twisted pairs of insulated conductors. The plurality of twisted pairs of insulated conductors extends substantially along a longitudinal axis of the telecommunications cable. In addition, the telecommunications cable includes a separator. The separator separates each twisted pair of insulated conductor of the plurality of twisted pairs of insulated conductors. Moreover, the telecommunications cable includes a first layer. The first layer surrounds the separator and the plurality of twisted pairs of insulated conductors along a length of the telecommunications cable. The separator is I-shaped filler. The separator is made of low smoke zero halogen material or MDPE. The first layer is made of low smoke zero halogen material, polyethylene or poly vinyl chloride. The first layer has a thickness in a range of about 0.4 millimeter-2.5 millimeters.

Claims

1. A separator for use in a telecommunications cable, the separator comprising:

a first section extending along a length of the telecommunications cable, wherein the first section is a first vertical section of the separator;

a second section extending along the length of the telecommunications cable, wherein the second section is a second vertical section of the separator;

a central section extending along the length of the telecommunications cable, wherein the central section is a third vertical section of the separator, wherein the central section is in between the first section and the second section, wherein the first section and the second section are positioned parallel to the central section, wherein the first section is on a first side of the central section, wherein the second section is on a second side of the central section;

a first cross section extending along the length of the telecommunications cable, wherein the first cross section is a first horizontal section in between the first section and the central section, wherein the first cross section is perpendicular to the first section and the central section, wherein the first cross section tangibly divides the central section and the first section equally from the first side of the central section; and

a second cross section extending along the length of the telecommunications cable, wherein the second cross section is a second horizontal section lying in between the second section and the central section, wherein the second cross section is perpendicular to the second section and the central section, wherein the second cross section tangibly divides the central section and the second section equally from the second side of the central section,

wherein the first section and the second section are defined by a predefined dimensions, the predefined dimensions are defined by a predefined distance, a predefined height, a predefined thickness and a predefined length, the central section has a height of around the collective predefined heights of the first section and the second section, wherein a length of the first section and the second section is substantially equal and a length of the first cross section and the second cross section is substantially equal, wherein the separator separates each of a plurality of twisted pairs of insulated conductors, wherein the separator is I-shaped filler, and

wherein the first section and the second section have the predefined height in a range of 1.4 millimeters to 4.6 millimeters.

2. The separator as recited in claim 1, wherein the separator is made of a material selected from a group consisting of low smoke zero halogen and medium density polyethylene.

3. The separator as recited in claim 1, wherein the separator is characterized by a dielectric constant, wherein the dielectric constant has a first value and a second value, wherein the dielectric constant has a first value in a range of 3.2 to 3.8 when the separator is made of low smoke zero halogen and wherein the dielectric constant has a second value in a range of 2.2 to 2.8 when the separator is made of medium density polyethylene.

4. The separator as recited in claim 1, wherein the separator is characterized by an elongation, wherein the elongation has a first value and a second value, wherein the elongation has a first value of about 300%-800% when the separator is made of medium density polyethylene and wherein the elongation has a second value of about 100%-300% when the separator is made of low smoke zero halogen.

5. The separator as recited in claim 1, wherein the separator is characterized by a tensile strength, wherein the tensile strength has a first value and a second value, wherein the tensile strength has a first value of about 12-20 N/Sq mm when the separator is made of medium density polyethylene and wherein the tensile strength has a second value of about 7-15 N/Sq mm when the separator is made of low smoke zero halogen.

6. The separator as recited in claim 1, wherein the central section has a height in a range of 5 millimeters to 7 millimeters, wherein the predefined distance between the first section and the second section is in a range of 5.3 millimeters to 6.3 millimeters, wherein the central section has a thickness in a range of about 0.3 millimeter-0.7 millimeter, wherein the first section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the second section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the first cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter, wherein the second cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter.

7. A telecommunications cable comprising:

a plurality of twisted pairs of insulated conductors extending substantially along a longitudinal axis of the telecommunications cable, wherein each insulated conductor of the plurality of twisted pairs of insulated conductors comprises;

an electrical conductor; and

an insulation layer surrounding the electrical conductor;

a separator for separating each twisted pair of insulated conductor of the plurality of twisted pairs of insulated conductors; and

a first layer surrounding the separator and the plurality of twisted pairs of insulated conductors along the length of the telecommunications cable,

wherein the electrical conductor is made of copper, wherein the separator comprises a first section, a second section and a central section, wherein the first section is a first vertical section of the separator, wherein the second section is a second vertical section of the separator, wherein the central section is a third vertical section of the separator, wherein the central section is in between the first section and the second section, wherein the first section and the second section are positioned parallel to the central section,

wherein the first section is on a first side of the central section, wherein the second section is on a second side of the central section, wherein the separator comprises a first cross section and a second cross section, wherein the first cross section is a first horizontal section in between the first section and the central section, wherein the first cross section is perpendicular to the first section and the central section, wherein the first cross section tangibly divides the central section and the first section equally from the first side of the central section, wherein the second cross section is a second horizontal section in between the second section and the central section, wherein the second cross section is perpendicular to the second section and the central section, wherein the second cross section tangibly divides the central section and the second section equally from the second side of the central section, the first section and the second section are defined by a predefined dimensions, the predefined dimensions are defined by a predefined distance, a predefined height, a predefined thickness and a predefined length, the central section has a height of around the collective predefined heights of the first section and the second section, wherein a length of the first section and the second section is substantially equal and wherein a length of the first cross section and the second cross section is substantially equal, and

wherein the first section and the second section have the predefined height in a range of 1.4 millimeters to 4.6 millimeters.

8. The telecommunications cable as recited in claim 7, wherein the separator is made of a material selected from a group consisting of low smoke zero halogen and medium density polyethylene.

9. The telecommunications cable as recited in claim 7, wherein the electrical conductor has a cross sectional diameter in a range of about 0.520 millimeter to 0.620 millimeter, wherein the insulation layer has a thickness in a range of about 0.15 millimeters-0.40 millimeters, wherein the first layer has a thickness in a range of about 0.4 millimeter-2.5 millimeter.

10. The telecommunications cable as recited in claim 7, further comprising one or more ripcords placed inside a core of the telecommunications cable and lying substantially along the longitudinal axis of the telecommunications cable, wherein the one or more ripcords facilitate stripping of the first layer, wherein the one or more ripcords is made of a material selected from a group consisting of nylon and polyester based twisted yarns.

11. The telecommunications cable as recited in claim 7, wherein a low smoke zero halogen material of the separator has a greater dielectric constant than a high density polyethylene material for the insulation layer of each of the plurality of twisted pairs of insulated conductors.

12. The telecommunications cable as recited in claim 7, wherein the central section has a height in a range of 5 millimeters to 7 millimeters, wherein the predefined distance between the first section and the second section is in a range of 5.3 millimeters to 6.3 millimeters, wherein the central section has a thickness in a range of about 0.3 millimeter-0.7 millimeter, wherein the first section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the second section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the first cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter, wherein the second cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter, wherein the telecommunications cable has a diameter in a range of 7.81 millimeters to 8.5 millimeters.

17. The telecommunications cable as recited in claim 7, wherein the insulation layer is made of a material selected from a group of high density polyethylene and foamed high density polyethylene, wherein the first layer is made of a material selected from a group of low smoke zero halogen material polyvinyl chloride and polyethylene, wherein the insulation layer is made of a material selected from a group consisting of polypropylene, foamed polyethylene, foamed polypropylene and fluoro-polymer.

13. Separator for use in a telecommunications cable, the separator comprising:

a first section extending along a length of the telecommunications cable, wherein the first section is a first vertical section of the separator;

a second section extending along the length of the telecommunications cable, wherein the second section is a second vertical section of the separator;

a central section extending along the length of the telecommunications cable, wherein the central section is a third vertical section of the separator, wherein the central section is in between the first section and the second section, wherein the first section is on a first side of the central section, wherein the second section is on a second side of the central section;

a first cross section extending along the length of the telecommunications cable, wherein the first cross section is a first horizontal section in between the first section and the central section, wherein the first cross section is perpendicular to the first section and the central section, wherein the first cross section tangibly divides the central section and the first section equally from the first side of the central section; and

a second cross section extending along the length of the telecommunications cable, wherein the second cross section is a second horizontal section in between the second section and the central section, wherein the second cross section is perpendicular to the second section and the central section, wherein the second cross section tangibly divides the central section and the second section equally from the second side of the central section,

wherein the first section and the second section are defined by a predefined dimensions, the predefined dimensions are defined by a predefined distance, a predefined height, a predefined thickness and a predefined length, the central section has a height of around the collective predefined heights of the first section and the second section, wherein a length of the first section and the second section is substantially equal and a length of the first cross section and the second cross section is substantially equal, wherein the separator is an I-shaped filler, wherein the separator separates each of the plurality of twisted pairs of insulated conductors, wherein the separator is made of a material selected from a group consisting of low smoke zero halogen and medium density polyethylene,

wherein the first section and the second section have the predefined height in a range of 1.4 millimeters to 4.6 millimeters, wherein the central section has a height in a range of about 5 millimeters to 7 millimeters, wherein the predefined distance between the first section and the second section is in a range of 5.3 millimeters to 6.3 millimeters, wherein the central section has a thickness in a range of about 0.3 millimeter-0.7 millimeter, wherein the first section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the second section has the predefined thickness in a range of about 0.35 millimeter-0.55 millimeter, wherein the first cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter, wherein the second cross section has a thickness in a range of about 0.5 millimeter-0.7 millimeter,

wherein a length of the first section and the second section is substantially equal and a length of the first cross section and the second cross section is substantially equal.

14. The separator as recited in claim 13, wherein the separator is characterized by a dielectric constant, wherein the dielectric constant has a first value and a second value, wherein the dielectric constant has a first value in a range of about 3.2 to 3.8 when the separator is made of low smoke zero halogen and wherein the dielectric constant has a second value of about 2 to 2.6 when the separator is made of medium density polyethylene.

15. The separator as recited in claim 13, wherein the separator is characterized by an elongation, wherein the elongation has a first value and a second value, wherein the elongation has a first value of about 300%-800% when the separator is made of medium density polyethylene and wherein the elongation has a second value of about 100%-300% when the separator is made of low smoke zero halogen.

16. The separator as recited in claim 13, wherein the separator is characterized by a tensile strength, wherein the tensile strength has a first value and a second value, wherein the tensile strength has a first value of about 12-20 N/Sq mm when the separator is made of medium density polyethylene and wherein the tensile strength has a second value of about 7-15 N/Sq mm when the separator is made of low smoke zero halogen.