Apparatus for producing grooved support member for optic fibers
US4872824A · kind A · utility
5Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Mar 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for making a grooved support member for carrying optical fibers having an extrusion die for forming a plastics sheath upon a strength member so as to form the support member. The die aperture has projections extending into it so as to form the grooves in the support member. To form the grooves into sinuous configuration, a twisting device is located upstream from the die. The twisting device comprises a plurality of gripping wheels on each side of the passline of the strength member, the gripping wheels staggered along the passline. The gripping wheels are rotatable alternately in opposite directions around the passline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.