Ngk Insulators, Inc.

Koichi Mori

Shoji Seike

Hiroyuki Katsukawa

Hisakazu Okajima

Masayuki Nozaki

Mitsuji Ikeda

Kazumi Nakanishi

Kenji Doi

Toshiyuki Mima

An excellent optical fiber built-in type composite insulator including at least two insulator bodies each having a penetration bore, at least one optical fiber inserted in the penetration bores, and sealing structures for the penetration bores of the insulator bodies and for a joining layer of opposing end surfaces of adjacent insulator bodies, is provided, which effectively prevents leakage of inner silicone grease, bending and breakage of the optical fiber, leakage of electric current along the penetration bores, short circuited trouble, and destruction of the insulator bodies, improves joining strength of the opposing end surfaces of the insulator bodies, and maintains the joining strength for a long period, affords a change of numbers of the insulator bodies, and facilitates the production. A method of producing such composite insulator is also provided.

Optical fiber built-in type composite insulator and method for producing

Optical fiber built-in type composite insulator and method of producing

An optical fiber-containing insulator including an insulator body having a through hole and an optical fiber inserted into the through hole in which an insulation gas or an organic material is filled in a middle portion of the through hole, the insulator comprising wide-mouthed portions arranged in both end portions of the through hole, cylindrical members inserted into the wide-mouthed portions and heat-resistive adhesive agent member arranged between the insulation gas or organic insulation material and the cylindrical member. A process for producing such an optical fiber-containing insulator is also disclosed.

Optical fiber-containing insulators and producing process thereof

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Handa, Japan

Koichi Mori