Water-blocked fiber optic ribbon cable
US6633709B2 · kind B2 · utility
23Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4411
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A water-tight fiber optic ribbon communications cable constructed without the use of gel or grease in the buffer tube(s) thereof. A plurality of water-blocking yarns are provided around at least a portion of the stack of fiber optic ribbons loosely positioned within the buffer tube(s) that possess water swellable characteristics. The swell capacity of the plurality of water blocking yarns exceeds the critical mass of water that could enter the buffer tube(s) by a factor of 2.0 or more. Optionally, superabsorbent powder can be applied between and/or on the fiber optic ribbon stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.