Patent US1035524A successfully refreshed from Google Patents.
US4097119A
Expired / Lapsed
US
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Optical fiber cable
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1975-06-06
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Granted: 1978-06-27
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Expires: 1995-06-06
Abstract
Abstract An optical fiber cable of a structure comprising optical fibers, cushion layers supporting the fibers by way of low friction layers and a strengthening member provided lengthwise along the cable, wherein concentrated tension and compression applied to the optical fibers due to the external bending force can be dispersed through the cushion and low friction layers and the tension applied to the entire cable can be received by the strengthening member.
Inventors
- 👤 Hiroyuki Kumamaru
- 👤 Hiromu Shioyama
- 👤 Masao Hoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:08
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/441; G02B6/4415; G02B6/4416; G02B6/4429
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
An optical fiber cable comprising: a plurality of bundles of optical fibers, a strengthening member extending lengthwise along the cable, low friction thin, polymeric tape slipping layers on respective sides of said bundles of optical fibers to permit slipping movement between said optical fibers and said low friction layers to prevent breakage of said optical fibers under applied stress to said cable, cushion layers disposed on the side of the low friction layers remote from said bundles of optical fibers, and protection layers underlying the radially innermost cushion layer and overlying the radially outermost cushion layer.
Claim 2
Dependent Claim
96 words
An optical fiber cable comprising: a plurality of bundles of optical fibers, a strengthening member extending lengthwise along the cable, low friction thin, polymeric tape slipping layers on respective sides of said bundles of optical fibers to permit slipping movement between said optical fibers and said low friction layers to prevent breakage of said optical fibers under applied stress to said cable, cushion layers disposed on the side of the low friction layers remote from said bundles of optical fibers, and protection layers underlying the radially innermost cushion layer and overlying the radially outermost cushion layer.
Claim 3
Dependent Claim
18 words
An optical fiber cable as defined in claim 1, further comprising insulated conductors for signal or power transmission.
Claim 4
Dependent Claim
95 words
An optical fiber cable comprising: at least one layer of optical fibers, a strengthening member extending lengthwise along the cable, low friction thin, polymeric tape slipping layers provided on both sides of said at least one layer of optical fibers to permit slipping movement between said optical fibers and said low friction layers to prevent breakage of said optical fibers under applied stress to said cable, cushion layers disposed on the side of the low friction layers remote from said optical fibers and at least an outer protection layer surrounding the radially outermost cushion layer.
Claim 5
Dependent Claim
95 words
An optical fiber cable comprising: at least one layer of optical fibers, a strengthening member extending lengthwise along the cable, low friction thin, polymeric tape slipping layers provided on both sides of said at least one layer of optical fibers to permit slipping movement between said optical fibers and said low friction layers to prevent breakage of said optical fibers under applied stress to said cable, cushion layers disposed on the side of the low friction layers remote from said optical fibers and at least an outer protection layer surrounding the radially outermost cushion layer.
Claim 6
Dependent Claim
17 words
An optical fiber cable as defined in claim 3, wherein the strengthening member is of steel wire.
Claim 7
Dependent Claim
16 words
An optical fiber cable as defined in claim 3, wherein the strengthening member is of plastic.
Claim 8
Dependent Claim
17 words
An optical fiber cable as defined in claim 3, wherein the strengthening member is of reinforced plastic.
Claim 9
Dependent Claim
17 words
An optical fiber cable as defined in claim 3, wherein the strengthening member is of carbon fiber.
Claim 10
Dependent Claim
17 words
An optical fiber cable as defined in claim 3, wherein the strengthening member is of glass fiber.
Claim 11
Dependent Claim
18 words
An optical fiber cable as defined in claim 3, wherein said cushion layers consists of non-woven plastic fiber.
Claim 12
Dependent Claim
17 words
An optical fiber cable as defined in claim 3, wherein said cushion layers consist of foamed plastic.
Claim 13
Dependent Claim
18 words
An optical fiber cable as defined in claim 3, wherein said cushion layers consist of non-woven glass fiber.
Claim 14
Dependent Claim
29 words
An optical fiber cable as defined in claim 7, wherein said low friction layers comprise one member of the group consisting of polyethylene, polyester, FEP tape and TEF tape.
Claim 15
Dependent Claim
18 words
An optical fiber cable as defined in claim 3, further comprising insulated conductors for signal or power transmission.
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |