Patent US4984859A successfully refreshed from Google Patents.
US4984859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fiber ribbon end-structure
Assignee: Mitsubishi Chemical Corp
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Filing: 1990-02-16
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Granted: 1991-01-15
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Expires: 2010-02-16
Abstract
Abstract The invention provides an end structure for at least one optical fiber ribbon wherein the same-side ends of the optical fiber ribbons are bundled together and tightly fitted in a metallic sleeve member so that coating layers of the optical fiber ribbons may be on the inner surface of the metallic sleeve member.
Inventors
- 👤 Takashi Fujigaki
- 👤 Yoshikazu Fujinaga
- 👤 Shuichiro Tokuda
- 👤 Noriyuki Furukawa
- 👤 Kiyoshi Ichimura
- 👤 Yukio Shibuya
- 👤 Shigeru Iuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:09
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4439; G02B6/4471; G02B6/44775; G02B6/4401; G02B6/4403
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
An end structure for at least one optical fiber ribbon, said at least one optical fiber ribbon comprising a plurality of optical fibers which are arranged in the form of a tape and having a coating layer on one side of said tape for holding them together, wherein the same-side end of said at least one optical fiber ribbon is bundled together and tightly fitted in a metallic sleeve member so that the inner surface of said metallic sleeve member is adjacent to only said coating layer of said at least one optical fiber ribbon, and said coating layer of each optical fiber ribbon is adjacent to at least one of said inner surface of said metallic sleeve member, a non-coating layer side of said tape comprising said at least one optical fiber ribbon, and a non-coating layer side of another optical fiber ribbon.
Claim 2
Dependent Claim
144 words
An end structure for at least one optical fiber ribbon, said at least one optical fiber ribbon comprising a plurality of optical fibers which are arranged in the form of a tape and having a coating layer on one side of said tape for holding them together, wherein the same-side end of said at least one optical fiber ribbon is bundled together and tightly fitted in a metallic sleeve member so that the inner surface of said metallic sleeve member is adjacent to only said coating layer of said at least one optical fiber ribbon, and said coating layer of each optical fiber ribbon is adjacent to at least one of said inner surface of said metallic sleeve member, a non-coating layer side of said tape comprising said at least one optical fiber ribbon, and a non-coating layer side of another optical fiber ribbon.
Claim 3
Dependent Claim
158 words
An optical fiber bundle comprising at least one optical fiber ribbon, said at least one optical fiber ribbon comprising a coating layer having a first and second side, a plurality of optical fibers which are arranged in the form of a tape, one side of said tape being affixed to said first side of said coating layer, and an end structure, said end structure comprising a metallic sleeve member having an inner surface wherein the improvement comprises said ribbon being bundled such that the outside of said bundle comprises only said second side of said coating layer, and said coating layer of each optical fiber ribbon is adjacent to at least one of said inner surface of said metallic sleeve member, a non-coating layer side of said tape comprising said at least one optical fiber ribbon, and a non-coating layer side of another optical fiber ribbon, and wherein said bundle is tightly fitted within said metallic sleeve member.
Claim 4
Dependent Claim
158 words
An optical fiber bundle comprising at least one optical fiber ribbon, said at least one optical fiber ribbon comprising a coating layer having a first and second side, a plurality of optical fibers which are arranged in the form of a tape, one side of said tape being affixed to said first side of said coating layer, and an end structure, said end structure comprising a metallic sleeve member having an inner surface wherein the improvement comprises said ribbon being bundled such that the outside of said bundle comprises only said second side of said coating layer, and said coating layer of each optical fiber ribbon is adjacent to at least one of said inner surface of said metallic sleeve member, a non-coating layer side of said tape comprising said at least one optical fiber ribbon, and a non-coating layer side of another optical fiber ribbon, and wherein said bundle is tightly fitted within said metallic sleeve member.
Claim 5
Dependent Claim
17 words
The optical fiber bundle of claim 2, wherein said sleeve member is pressed into a desired shape.
Claim 6
Dependent Claim
13 words
The optical fiber bundle of claim 3, wherein said shape is substantially circular.
Claim 7
Dependent Claim
13 words
The optical fiber bundle of claim 3, wherein said shape is substantially rectangular.
Claim 8
Dependent Claim
13 words
The optical fiber bundle of claim 3, wherein said shape is substantially square.
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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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |