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US 12,298,578 B2Granted
Optical fiber cable production method, and optical fiber cable
AssigneeFujikura Ltd.
InventorsTomoaki Kaji, Akira Namazue, Ken Osato
Life of this patent
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Abstract
An optical fiber cable includes: a core including optical fibers; a reinforcing wrap that surrounds the core; and a sheath that accommodates the core and the reinforcing wrap. The reinforcing wrap includes an overlapping portion. A first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of the optical fiber cable in a cross-sectional view.
Claims9
An optical fiber cable comprising:
- a core comprising optical fibers;
- a reinforcing wrap that surrounds the core;
- and
- a sheath that accommodates the core and the reinforcing wrap, wherein
- the reinforcing wrap comprises an overlapping portion,
- a first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of the optical fiber cable in a cross-sectional view,
- the overlapping portion:
- extends in a longitudinal direction of the optical fibers, and comprises:
- a first longitudinal portion in which:
- the first end portion and the second end portion are partially in contact with each other, and
- a partial-width gap extends over only a part of the first longitudinal portion in the circumferential direction;
- and
- a second longitudinal portion in which the first end portion and the second end portion are in contact with each other without a gap, and
- a resin that forms the sheath is inserted into the partial-width gap.
11 more elements
An optical fiber cable production method comprising:
- feeding a core comprising optical fibers;
- winding a reinforcing wrap around the core and forming an overlapping portion that extends in a longitudinal direction of the optical fibers and in which a first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of a optical fiber cable;
- and
- performing extrusion molding of a sheath on an outside of the reinforcing wrap, wherein, the overlapping portion comprises:
- a first longitudinal portion in which:
- the first end portion and the second end portion are partially in contact with each other, and
- a partial-width gap extends over only a part of the first longitudinal portion in the circumferential direction;
- and
- a second longitudinal portion in which the first end portion and the second end portion are in contact with each other without a gap, and
- the performing extrusion molding comprises inserting a resin that forms the sheath into the partial-width gap.
7 more elements
Dependencies are inferred from the claim text.