Patent US4776665A successfully refreshed from Google Patents.
US4776665A
Expired / Lapsed
US
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Metal-free, self-bearing optical cable for high-tension overhead lines
Assignee: Siemens AG
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Filing: 1986-07-18
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Granted: 1988-10-11
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Expires: 2006-07-18
Abstract
Abstract A metal free self-bearing optical cable is provided for use as an overhead cable in the field region between phase wires of a high-tension power line. The cable core is formed of slightly electrically conductive material having series resistances of between 10 5 Ω cm and 10 10 Ω cm.
Inventors
- 👤 Ulrich Oestreich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4422; G02B6/4417; G02B6/4419
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
80 words
A metal-free, self-beariang optical cable for use as an overhead cable of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; a cable cladding covering said cable core; and said cable being strung in the field region between phase wires of the overhead high tension line, said cable being held by and clipped to grounded portions of a lattice tower.
Claim 2
Dependent Claim
80 words
A metal-free, self-beariang optical cable for use as an overhead cable of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; a cable cladding covering said cable core; and said cable being strung in the field region between phase wires of the overhead high tension line, said cable being held by and clipped to grounded portions of a lattice tower.
Claim 3
Dependent Claim
36 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable cladding is formed of slightly electrically conductive material, said cable cladding having a resistivity of between 10 7 Ωcm and 10 12 Ωcm.
Claim 4
Dependent Claim
28 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said optical cable has an overall insulating resistance of between 10 12 Ω/m and 10 7 Ω/m.
Claim 5
Dependent Claim
73 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core and said cable cladding are formed of moisture absorbing materials.
Claim 6
Dependent Claim
73 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core and said cable cladding are formed of moisture absorbing materials.
Claim 7
Dependent Claim
77 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core and said cable cladding are of a material having an additive of aluminum hydroxide.
Claim 8
Dependent Claim
77 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core and said cable cladding are of a material having an additive of aluminum hydroxide.
Claim 9
Dependent Claim
23 words
A metal-free, self-bearing optical cable as claimed in claim 5, wherein said aluminum hydroxide additive is between 10 and 60 percent by weight.
Claim 10
Dependent Claim
32 words
A metal-free, self-bearing optical cable as claimed in claim 1, further comprising: grounding devices for said optical cable, said grounding devices being provided at said cable core and at said cable cladding.
Claim 11
Dependent Claim
46 words
A metal-free, self-bearing optical cable as claimed in claim 7, wherein said cable cladding is stripped from said cable core at grounding locations at which said grounding devices are applied to said cable core, and further comprising: a sealing compound at said grounding locations for sealing.
Claim 12
Dependent Claim
17 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable core includes plastic filaments.
Claim 13
Dependent Claim
19 words
A metal-free, self-bearing optical cable as claimed in claim 9, wherein said plastic filaments are mixed with glass filaments.
Claim 14
Dependent Claim
17 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable core includes polyamide filaments.
Claim 15
Dependent Claim
19 words
A metal-free, self-bearing optical cable as claimed in claim 11, wherein said polyamide filaments are mixed with glass filaments.
Claim 16
Dependent Claim
22 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable core includes polyester filaments provided with an ionogenic slip.
Claim 17
Dependent Claim
22 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable core includes glass filaments provided with an ionogenic slip.
Claim 18
Dependent Claim
69 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core includes filaments enhanced with swelling powders.
Claim 19
Dependent Claim
69 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core includes filaments enhanced with swelling powders.
Claim 20
Dependent Claim
69 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core includes filaments enhanced by aluminum hydroxide.
Claim 21
Dependent Claim
69 words
A metal-free, self-bearing optical cable for use as an overhead cable in a field region between and outside of phase wires of a high-tension overhead line, comprising: a cable core of slightly electrically conductive material, said core having a resistivity of between 10 5 ohm cm and 10 10 ohm cm; and a cable cladding covering said cable core; wherein said cable core includes filaments enhanced by aluminum hydroxide.
Claim 22
Dependent Claim
20 words
A metal-free, self-bearing optical cable as claimed in claim 1, wherein said cable core includes filaments enhanced by ionogenic layers.
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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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |