# US 2025/0093604 A1 · Compact armored intermittently bonded ribbon cables

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- Number: US 2025/0093604 A1
- Document ID: US20250093604A1
- Status: Published application
- Kind: A1
- Application number: 18/633,378
- Filed: 2024-04-11
- Published: 2025-03-20
- Earliest claimed: 2023-09-15
- Assignees: HFCL Limited
- Applicants: HFCL Limited
- Inventors: Peter Weimann; Pramod Agarwal; Jyoti Prakash Das
- Web page: https://patentgrep.com/patent/US20250093604A1

## CPC

- G02B 6/4403: {with ribbon structure (G02B6/4429, G02B6/4439, G02B6/4479 take precedence)}
- G02B 6/4432: {with fibre reinforcements}
- G02B 6/441: {built up from sub-bundles (G02B6/4429, G02B6/4439, G02B6/4479 take precedence)}
- G02B 6/443: {Protective covering}
- G02B 6/4433: {Double reinforcement laying in straight line with optical transmission element}
- G02B 6/4434: {Central member to take up tensile loads}
- G02B 6/44384: {the means comprising water blocking or hydrophobic materials (G02B6/4439, G02B6/4479 take precedence)}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure provides an armored cable (100) comprising a central core (102) comprising a plurality of intermittently bonded ribbon (IBR) bundles (104) enclosed in a protective layer (106), which is placed within an armor layer (108). An outer cable jacket (110) surrounds the armor layer (108), which optionally comprises at least a strength member (114).

## Claims

### Claim 1

An optical fiber cable (100) comprising:
a. a central core (102) comprising a plurality of intermittently bonded ribbon (IBR) bundles (104);
b. a protective layer (106) enclosing the central core (102);
c. an armor layer (108) surrounding the protective layer (106); and
d. an outer cable jacket (110).

### Claim 2 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein IBR bundle (104) comprises a plurality of IBRs, and each IBR comprises a plurality of optical fibers (112).

### Claim 3 (depends on 2)

The optical fiber cable (100) as claimed in claim 2, wherein a plurality of IBRs are bundled into at least an IBR bundle (104) by at least a bundling member, said bundling member is selected from the group consisting of yarn and tape.

### Claim 4 (depends on 3)

The optical fiber cable (100) as claimed in claim 3, wherein at least one bundling member is uniquely colored.

### Claim 5 (depends on 3)

The optical fiber cable (100) as claimed in claim 3, wherein at least two IBR bundles (104) are helically stranded or S-Z stranded.

### Claim 6 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein the protective layer (106) is restrictively wrapped around the central core (102), or longitudinally placed along the length of the central core (102).

### Claim 7 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein the protective layer (106) material is selected from the group consisting of polymeric tape, water swellable tape, aramid yarn, IGFR yarns, polymeric yarns, superabsorbent material, and combinations thereof.

### Claim 8 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein said protective layer (106) is a single layer of tape coated with superabsorbent material, which can be a woven tape or non-woven tape.

### Claim 9 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein the protective layer (106) has thickness in range 0.1 mm to 1.0 mm.

### Claim 10 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, wherein the armor layer (108) is selected from the group consisting of corrugated steel tape, aluminum tape, spiral interlocking steel, and spiral interlocking aluminum.

### Claim 11 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, comprising at least a strength member (114) partially or fully embedded in the outer cable jacket (110).

### Claim 12 (depends on 1)

The optical fiber cable (100) as claimed in claim 1, comprising at least a strength member (114) located in the central core (102).

### Claim 13 (depends on 11, 12)

The optical fiber cable (100) as claimed in claims 11-12, wherein the strength member (114) is selected from the group consisting of steel wires, aramid reinforced plastic (ARP), fiber reinforced plastic (FRP), glass reinforced plastic (GRP), aramid yarn, and impregnated glass fiber reinforcement (IGFR) yarn.

### Claim 14 (depends on 13)

The optical fiber cable (100) as claimed in claim 13, wherein said strength member (114) is coated with any one or more of non-abrasive material, adhesive material, superabsorbent material, and combinations thereof.