Patent · US Active

Dual layer buffer tube

US11592633B2 · kind B2 · utility

0Cited by

3References

16Claims

0Family size

Assignee

Sterlite Technologies Limited · IN

Inventors

Sravan Kumar · Deo, IN
Hemanth Kondapalli · Manesar, IN
Kishore Sahoo · Gurugram, IN

Key dates

Filing date	Feb 27, 2020
Grant date	Feb 28, 2023
Priority date	—
Expiry date	Feb 27, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/4403
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A buffer tube for an optical fiber cable provided by the present disclosure includes an optical fiber ribbon stack, a first layer, a second layer, an optical fiber cable, a central strength member, a plurality of buffer tubes, a water blocking layer, and a sheath and plurality of rip cords. The first layer is an inner layer of the buffer tube. The first layer is made of a soft material. The soft material of the first layer is one of low smoke zero halogen, thermoplastic elastomers and thermoplastic polyurethane. The second layer is an outer layer of the buffer tube. The second layer surrounds the first layer. The second layer is made of a hard material. The hard material of the second layer is one of polypropylene, polybutylene terephthalate, and nylon.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.