US4199224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication cable utilizing optical transmission elements
Assignee: Siemens AG
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Filing: 1975-10-10
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Granted: 1980-04-22
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Expires: 1995-10-10
Abstract
Abstract An optical cable is constructed using a core of high tensile strength steel wires around which is disposed a radial system of chambers in the form of a helix retaining the optical conductors so that they are movable radially thereby protecting the optical conductors from tensile, compression and flexural stresses.
Inventors
- 👤 Ulrich Oestreich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:44
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/449; G02B6/4491; G02B6/4401; G02B6/4407; G02B6/4415; G02B6/4416; G02B6/4429; G02B6/443; G02B6/4486; G02B6/4489
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
An optical cable for information transmission comprising: (a) a core of steel wires; (b) a plastic profile member surrounding said core, said member having a cross section in the form of the spokes of a wheel with the spokes forming radial chambers, the chambers disposed about the cable axis in helical fashion; (c) optical elements movably disposed in each of said chambers; (d) a covering of thermoplastic material applied over the circumference of said plastic member covering the outer radial extreme of said chambers; and (e) an outer jacket.
Claim 2
Dependent Claim
89 words
An optical cable for information transmission comprising: (a) a core of steel wires; (b) a plastic profile member surrounding said core, said member having a cross section in the form of the spokes of a wheel with the spokes forming radial chambers, the chambers disposed about the cable axis in helical fashion; (c) optical elements movably disposed in each of said chambers; (d) a covering of thermoplastic material applied over the circumference of said plastic member covering the outer radial extreme of said chambers; and (e) an outer jacket.
Claim 3
Dependent Claim
31 words
A cable according to claim 1 wherein said optical transmission elements are disposed within said chambers so as to rest against said covering when said cable is in an unstressed condition.
Claim 4
Dependent Claim
20 words
A cable according to claim 1 wherein said plastic member comprises a profiled strip placed over said high strength core.
Claim 5
Dependent Claim
20 words
A cable according to claim 1 wherein said plastic member comprises a profiled body extruded onto said high strength core.
Claim 6
Dependent Claim
25 words
A cable according to claim 1 wherein the length of lay of the chambers formed in said plastic member is between 0.2 and 2 m.
Claim 7
Dependent Claim
18 words
A cable according to claim 5 wherein said chambers have a length of lay of approximately 1 m.
Claim 8
Dependent Claim
15 words
A cable according to claim 1 wherein said transmission elements comprise individual, coated glass fibers.
Claim 9
Dependent Claim
25 words
A cable according to claim 1 wherein at least one twisted layer of insulated electrical conductors is arranged between said wrapping and said outer jacket.
Claim 10
Dependent Claim
21 words
A cable according to claim 1 and further including at least one cushioning layer between said wrapping and said outer jacket.
Claim 11
Dependent Claim
35 words
A cable according to claim 1 wherein said optical transmission elements comprise individual, coated glass fibers disposed within said chambers so as to rest against said covering when said cable is in an unstressed condition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |