IP Library › Granted Patent US 12,399,336
Granted Patent B2
US 12,399,336 · App. 18/059,001 · Granted Aug 26, 2025

Optical fiber cable with partitioned case for optical fiber cable

Inventors: Takayuki Yokochi (Osaka, JP); Kenichiro Otsuka (Osaka, JP); Takayuki Shimazu (Osaka, JP)
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
G02B6/4447G02B6/4482
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Quick Facts
Patent No.
US 12,399,336
App. No.
18/059,001
Filed
Nov 28, 2022
Granted
Aug 26, 2025
Kind
B2
Art Unit
2874
USPC
385/114
Abstract

An optical fiber cable includes a plurality of first optical fiber cords including a trunk optical fiber cord and a branch optical fiber cord, a second optical fiber cord connected to the branch optical fiber cord, and a case covering a part of the plurality of first optical fiber cords and a part of the second optical fiber cord, where the case includes a first tube portion through which a trunk optical fiber cord is passed, a second tube portion adjacent to the first tube portion and through which a branch optical fiber cord is passed, and a partition wall partitioning the first tube portion and the second tube portion.

Claims (27)

1. An optical fiber cable comprising:

a plurality of first optical fiber cords including a trunk optical fiber cord and a branch optical fiber cord;

a second optical fiber cord connected to the branch optical fiber cord; and

a case covering a part of the plurality of first optical fiber cords and a part of the second optical fiber cord,

wherein the case includes:

a first tube portion through which the trunk optical fiber cord is passed;

a second tube portion adjacent to the first tube portion and through which the branch optical fiber cord is passed; and

a partition wall partitioning the first tube portion and the second tube portion,

wherein an optical connecting portion of the branch optical fiber cord and the second optical fiber cord is accommodated in the second tube portion,

wherein a first end of the second tube portion is located between a first end of the first tube portion and a second end of the first tube portion, the first end of the second tube portion communicating with an interior space of the first tube portion, and

wherein the partition wall extends from the first end of the second tube portion to a second end of the second tube portion.

2. The optical fiber cable according to claim 1 , further comprising:

a first tube located at least outside the case, the first tube covering the plurality of first optical fiber cords;

a second tube located at least outside the case, the second tube covering the second optical fiber cord; and

a resin member surrounding at least the first end of the first tube portion, the second end of the first tube portion, and the second end of the second tube portion,

wherein the resin member is in contact with at least a part of the case, a part of the first tube, and a part of the second tube.

3. The optical fiber cable according to claim 2 , wherein the resin member has a thermal shrinkage property.

4. The optical fiber cable according to claim 1 ,

wherein the case includes a body including the first tube portion, the second tube portion, and the partition wall, and

wherein the body is an assembly structure of a first main body portion and a second main body portion, the first main body portion defining a first part of the first tube portion, a first part of the second tube portion, and a first part of the partition wall, and the second main body portion defining a second part of the first tube portion, a second part of the second tube portion, and a second part of the partition wall.

5. The optical fiber cable according to claim 4 , further comprising a connecting portion connecting the first main body portion and the second main body portion.

6. The optical fiber cable according to claim 1 , further comprising a sleeve covering the optical connecting portion,

wherein an outer face of the sleeve is sandwiched by the second tube portion.

7. The optical fiber cable according to claim 6 ,

wherein a projection located between the first end and the second end of the second tube portion is provided on an inner wall of the second tube portion, and

wherein the projection is in contact with the outer face.

8. The optical fiber cable according to claim 7 , wherein the projection has elasticity.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 28, 2022
From: YOKOCHI, TAKAYUKI; OTSUKA, KENICHIRO; SHIMAZU, TAKAYUKI
To: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Reel/Frame 061889/0615 →
Priority Claims (1)
JP 2021-197035 · Dec 3, 2021 · national
Continuity (1)
Related Publication 20230176307A1 · Jun 8, 2023
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