Process and apparatus for making fiber optic cable

Details Process and apparatus for making fiber optic cable Process and apparatus for making fiber optic cable

1987-02-18

1988-07-19

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57 9, 57 13, 57352, H01B 1302, H01B 1122, G02B 604

Patent

active

047576758

ABSTRACT:
An apparatus and a process for simultaneously twisting a channeled core rod, inserting optical fibers into the channels and capturing the twist of the rod while minimizing the insertion stresses imposed on the optical fibers. The apparatus comprises a shape capture die, an insertion die and a core capture means which are located proximate one another to provide a short region of twisting. The insertion die is rotationally fixed to the shape capture die so that as the core passes through the center of the insertion die the fibers are automatically inserted into the channels of the core. The core and inserted fibers are then passed to a core capture means which controls rotation of the core but permits its axial translation. The rotating elements of the machine are driven from a line shaft or other suitable means providing them with identical rotation rates. In this way the core is twisted to form helical channels with inserted fibers without requiring elaborate synchronization of the core translation drive and the fiber insertion die.

REFERENCES:
patent: 4154049 (1979-05-01), King et al.
patent: 4205899 (1980-06-01), King et al.
patent: 4620412 (1986-11-01), Portinari
patent: 4635430 (1987-01-01), Missout et al.
patent: 4663926 (1987-05-01), Girardon et al.
patent: 4676054 (1987-06-01), Veld

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