| United States Patent | 5,815,908 |
| Wichmann | Oct. 6, 1998 |
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.
| Inventors: | Wichmann; Franz-Josef (Friesoythe, DE). |
| Assignee: | Siemens Aktiengesellschaft (Munich, DE). |
| Appl. No.: | 719,861 |
| Filed: | Sept. 25, 1996 |
| Sept. 25, 1995 [DE] | 195 35 621.7 |
| Intl. Cl. : | H01P 11/00, B21B 15/00 |
| Current U.S. Cl.: | 29/600; 219/121.64; 219/121.82; 226/1; 29/33.R; 385/111; 57/6 |
| Field of Search: | 29/600, 33 R; 228/148; 219/121.63, 121.64, 121.82; 226/7, 1; 385/111, 109; 57/6 |
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| 42 10 633 | Apr., 1995 | DE |