US4093342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber cable
Assignee: Nortel Networks Ltd
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Filing: 1976-11-17
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Granted: 1978-06-06
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Expires: 1996-11-17
Abstract
Abstract An optical fiber cable in which elongation under longitudinal tension is reduced by the use of a molecularly oriented plastic reinforcement member extending along the neutral axis of the cable.
Inventors
- 👤 Stanley G. Foord
- 👤 Walter E. Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:03
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/4434; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; G02B6/441; G02B6/4413; B29C48/06; B29C48/09; B29C48/11; B29C48/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
An optical fiber cable comprising: a plurality of optical fibers disposed lengthwise around a high elastic modulus strength reinforcement member extending along the neutral axis of the cable; said reinforcement member consisting of a prestretched molecularly oriented plastic; a plastic tape wrapped about said fibers on said reinforement member; an extruded plastic sheath surrounding said tape on said reinforcement member; and said plastic tape being of a material different than said sheath and being contiguous with said sheath, said plastic tape providing a heat shield for said reinforcement member so that shrinkage of said reinforcement member will not occur during extrusion of said plastic sheath.
Claim 2
Dependent Claim
105 words
An optical fiber cable comprising: a plurality of optical fibers disposed lengthwise around a high elastic modulus strength reinforcement member extending along the neutral axis of the cable; said reinforcement member consisting of a prestretched molecularly oriented plastic; a plastic tape wrapped about said fibers on said reinforement member; an extruded plastic sheath surrounding said tape on said reinforcement member; and said plastic tape being of a material different than said sheath and being contiguous with said sheath, said plastic tape providing a heat shield for said reinforcement member so that shrinkage of said reinforcement member will not occur during extrusion of said plastic sheath.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |