MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202421103749 A) filed by Aberdare Technologies Private Limited on December 27, 2024, for Method For Manufacturing A Double-Layer Metal Armored Fire-Resistant Optical Cable.
Inventors include Huai, Yexing; Lu, Guoqing; Song, Zhenxu; Chen, Long; Wu, Laiqiang; Gu, Wenwei; Satpute, Shankar; Gaikwad, Swapnil; Bera, Pabitra; and Paswan, Diwakar.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: The present disclosure relates to a double-layer metal armored fire-resistant optical cable (100) and a manufacturing method (200). The optical cable (100) includes a core with optical fibers (102) contained within loose tubes (104), which are filled with jelly (106) for protection. The loose tubes (104) are twisted around a central reinforcement element, and the core is armored with chrome-plated corrugated steel belts (112), both for mechanical protection and to enhance fire resistance. The inner sheaths (108) and the outer sheaths (110) are made from flame-retardant ceramic polyolefin materials, providing additional fire-resistance. The manufacturing process (200) involves multiple steps, including coloring (202) the optical fibers (102) using UV curing ink, applying (204) a secondary coating to the loose tubes (104), stranding (206) the tubes around a central reinforcement element, and forming the sheaths (208). The final product undergoes stringent testing for optical, physical, and fire-resistance properties.
Disclaimer: Curated by HT Syndication.
