EP0372867A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical fiber-containing insulators and process for producing same
Assignee: NGK Insulators Ltd
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Filing: 1989-12-01
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Granted: —
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Expires: 2009-12-01
Abstract
Abstract An optical fiber-containing insulator including an insulator body (1) having a through hole and an optical fiber inserted into the through hole (2) in which an insulation gas or an organic material (6) is filled in a middle portion (2-1) of the through hole is disclosed, which comprises wide-mouthed portions (2-2) arranged in both end portions of the through hole, cylindrical members (4) inserted into the wide-mouthed portions and heat-resistive adhesive agent member (7) arranged between the insulation gas or organic insulation material and the cylindrical member. The space between the cylindrical member and inner wall of the hole and the space between the cylindrical member and the optical fiber is sealed with an inorganic material (5). A process for producing such an optical fiber-containing insulator is also disclosed.
Inventors
- 👤 Shoji Seike
- 👤 Toshiyuki Mima
- 👤 Koichi Mori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 01:58
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/56; H01B17/58; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4417; G02B6/442
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
An optical fiber-containing insulator including an insulator body having a through hole provided in a center axis portion thereof and an optical fiber inserted into said through hole, in which an insulation gas or an organic insulation material is filled in a middle portion of said through hole, comprising wide-mouthed portions arranged in both end portions of said through hole, cylindrical members inserted into said wide-mouthed portions and having an outer surface corresponding to an inner surface of said wide-mouthed portions, the optical fiber in said cylindrical member and a space between the outer surface of said cylindrical member and the inner surface of said wide-mouthed portion being sealed by an inorganic material, and heat-resistive adhesive agent members arranged between said insulation gas or organic insulation material and said cylindrical member.
Claim 2
Dependent Claim
131 words
An optical fiber-containing insulator including an insulator body having a through hole provided in a center axis portion thereof and an optical fiber inserted into said through hole, in which an insulation gas or an organic insulation material is filled in a middle portion of said through hole, comprising wide-mouthed portions arranged in both end portions of said through hole, cylindrical members inserted into said wide-mouthed portions and having an outer surface corresponding to an inner surface of said wide-mouthed portions, the optical fiber in said cylindrical member and a space between the outer surface of said cylindrical member and the inner surface of said wide-mouthed portion being sealed by an inorganic material, and heat-resistive adhesive agent members arranged between said insulation gas or organic insulation material and said cylindrical member.
Claim 3
Dependent Claim
16 words
An optical fiber-containing insulator according to claim 1, wherein said wide-mouthed portion has a tapered shape.
Claim 4
Dependent Claim
215 words
A process for producing an optical fiber-containing insulator including an insulator body having a through hole provided in a center axis portion thereof and an optical fiber inserted into said through hole, in which an insulation gas or an organic insulation material is filled in a middle portion of said through hole, comprising the steps of (a) inserting the optical fiber into said through hole, the both end portions of which have wide-mouthed portions, (b) filling said insulation gas or organic insulation material into a center portion of said through hole, (c) arranging heat-resistive adhesive agents between a sealing portion consisting of said insulation gas or organic insulation material and said wide-mouthed portions, (d) inserting conductive cylindrical members having an outer surface corresponding to an inner surface of said wide-mouthed portions into said wide-mouthed portions through an inorganic glass, (e) inserting inorganic glass member into said conductive cylindrical member through the optical fiber, and (f) melting said inorganic glass arranged between the inner surface of said wide-mouthed portions and the outer surface of said cylindrical members and said inorganic glass member arranged in said cylindrical member, through which the optical fiber is arranged, by heating said conductive cylindrical member by means of a high frequency induction heating method so as to form end sealing constructions.
Claim 5
Dependent Claim
215 words
A process for producing an optical fiber-containing insulator including an insulator body having a through hole provided in a center axis portion thereof and an optical fiber inserted into said through hole, in which an insulation gas or an organic insulation material is filled in a middle portion of said through hole, comprising the steps of (a) inserting the optical fiber into said through hole, the both end portions of which have wide-mouthed portions, (b) filling said insulation gas or organic insulation material into a center portion of said through hole, (c) arranging heat-resistive adhesive agents between a sealing portion consisting of said insulation gas or organic insulation material and said wide-mouthed portions, (d) inserting conductive cylindrical members having an outer surface corresponding to an inner surface of said wide-mouthed portions into said wide-mouthed portions through an inorganic glass, (e) inserting inorganic glass member into said conductive cylindrical member through the optical fiber, and (f) melting said inorganic glass arranged between the inner surface of said wide-mouthed portions and the outer surface of said cylindrical members and said inorganic glass member arranged in said cylindrical member, through which the optical fiber is arranged, by heating said conductive cylindrical member by means of a high frequency induction heating method so as to form end sealing constructions.
References Cited (Backward Citations)
No citation records indexed.
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