Method and apparatus for use in the manufacture of optical cable slotted rods
US5830517A · kind A · utility
6Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Apr 1, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/60
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for extruding a plastic rod having helical slots in its external surface includes the use of a die including a relieved exit end face, resulting in a more uniform drag on the plastic melt. Plastic rods so formed are used in slotted core type optical fiber telecommunication cables. The die includes internal channels which form peripheral ribs on the plastic rod. The channels may follow either a helical or a straight path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.