US4629286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated optical fiber cable structure which prevents longitudinal cracks
Assignee: Furukawa Electric Co Ltd
•
Filing: 1983-07-05
•
Granted: 1986-12-16
•
Expires: 2003-07-05
Abstract
Abstract There is disclosed a coated optical fiber having a buffer layer around the outer periphery of an optical fiber. A curable resin reinforced coated layer made of reinforced fiber materials is disposed around the outer periphery of the buffer layer and a heatcurable resin is impregnated to the materials and cured. A curable resin layer having no fiber material is interposed between the buffer layer and the reinforced coated layer. The reinforced layer includes therein a multiplicity of elongated fiber materials.
Inventors
- 👤 Kenichi Fuse
- 👤 Yusei Shirasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:43
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/4486; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4432
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A coated optical fiber free of longitudinal cracks comprising: (a) a core and a clad (1) around said core; (b) a primary coated layer (2) and a silicon resin buffer layer (3) around the outer periphery of the optical fiber (1); (c) a curable resin layer (4) around the outer periphery of the buffer layer (3); (d) a reinforced thermosetting resin coated (5) around the outer periphery of the resin layer, said reinforced layer (5) including therein a multiplicity of elongated thin reinforcing fiber material (6) therein, said fiber material being selected from the group consisting of glass fiber, carbon fiber, aramide fiber, silica fiber, quartz fiber, and mixtures thereof, and, wherein the core has an outer diameter of between about 50 um to about 125 um, the reinforced resin layer has an outer diameter of between about 950 um to about 1 mm, and the buffer layer has a thickness of about 200 um or less with a Young's modulus of 30 kg/mm 2 .
Claim 2
Dependent Claim
166 words
A coated optical fiber free of longitudinal cracks comprising: (a) a core and a clad (1) around said core; (b) a primary coated layer (2) and a silicon resin buffer layer (3) around the outer periphery of the optical fiber (1); (c) a curable resin layer (4) around the outer periphery of the buffer layer (3); (d) a reinforced thermosetting resin coated (5) around the outer periphery of the resin layer, said reinforced layer (5) including therein a multiplicity of elongated thin reinforcing fiber material (6) therein, said fiber material being selected from the group consisting of glass fiber, carbon fiber, aramide fiber, silica fiber, quartz fiber, and mixtures thereof, and, wherein the core has an outer diameter of between about 50 um to about 125 um, the reinforced resin layer has an outer diameter of between about 950 um to about 1 mm, and the buffer layer has a thickness of about 200 um or less with a Young's modulus of 30 kg/mm 2 .
References Cited (Backward Citations)
US4072400A
Cited
US4113349A
Cited
DE2648996A1
Cited
US4105284A
Cited
US4114981A
Cited
JPS5511233A
Cited
US4334733A
Cited
GB2078996A
Cited
US4504112A
Cited
US4522464A
Cited
US4523804A
Cited
US4552433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |