Method and apparatus for producing a metal tube containing a lig

Metal working – Method of mechanical manufacture – Electrical device making

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29 33R, 57 6, 21912164, 21912182, 226 1, 385111, H01P 1100, B21B 1500

Patent

active

058159088

ABSTRACT:
A method and apparatus for producing excess lengths of light waveguides in relation to a metal tube containing the waveguide comprises an arrangement for forming a metal tube and an arrangement for inserting the light waveguides into the metal tube at a greater rate of feed than the advancement of the tube being formed by the arrangement for forming a metal tube. The apparatus and method also include introducing a filling compound into the metal tube upstream of the point of introducing the waveguides and an arrangement of rollers for shaping the formed tube to its final cross sectional shape.

REFERENCES:
patent: 4154049 (1979-05-01), King et al.
patent: 4640576 (1987-02-01), Eastwood et al.
patent: 4852790 (1989-08-01), Karlinski
patent: 4985185 (1991-01-01), Mayr et al.
patent: 5143274 (1992-09-01), Laupretre et al.
patent: 5263239 (1993-11-01), Ziemek
patent: 5582748 (1996-12-01), Yoshie et al.

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