Electric heating – Metal heating – By arc
Patent
1993-06-16
1995-06-20
Paschall, Mark H.
Electric heating
Metal heating
By arc
21912164, 21912182, B23K 2600, B23K 2608
Patent
active
054262771
ABSTRACT:
An apparatus for manufacturing a metal tube covered optical fiber cable, including an assembly (2) having a plurality of roller pairs, for causing both side edges of a metal strip (1) to abut against each other to form the metal strip into a metal tube, a laser welding device (7) for radiating a laser beam to abutment portions of the metal tube to bond the abutment portions to obtain a sealed metal tube (1c), and an optical fiber guiding element (6) for guiding an optical fiber (5) in a formed metal tube (1a) comprises
an extra length control system comprising
a tension adjusting element (15) for the metal strip (1) arranged in the upstream of the assembly (2) and a tension adjusting element (14) for the optical fiber (5) arranged in the upstream of the optical fiber guide element (6), and
a traction element (11, 13) including tension variable element (11) for the metal tube covered optical fiber cable (1d).
REFERENCES:
patent: 4504112 (1985-03-01), Gould et al.
patent: 4651917 (1987-03-01), Gould et al.
patent: 4759487 (1988-07-01), Karlinski
patent: 4852790 (1989-08-01), Karlinski
patent: 5096518 (1992-03-01), Fujikawa et al.
patent: 5231260 (1993-07-01), Yoshie et al.
Tsukui Takashi
Yoshie Yasunori
NKK Corporation
Paschall Mark H.
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