Patent US5067791A successfully refreshed from Google Patents.
US5067791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber identification in an optical fiber composite overhead ground wire
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1987-05-11
•
Granted: 1991-11-26
•
Expires: 2007-05-11
Abstract
Abstract An optical fiber composite overhead ground wire in which a plurality of optical fibers are wound together on a tension member to form an optical unit. A plurality of such optical units are disposed in a spacer around which ground wires are wound. The optical fibers within a unit are identified by color and possibly winding order. Each tension member is also identified from other tension members so each optical fiber can be uniquely identified.
Inventors
- 👤 Satoshi Nishiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:58
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/4482; G02B6/4401; G02B6/4407; G02B6/4415; G02B6/4416; G02B6/4422; G02B6/46; G02B6/56; G02B6/562
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
An optical fiber composite overhead ground wire, comprising: two or more optical fiber units bundled together; and a plurality of ground wires provided externally to said units, each of said optical fiber units comprising: a tension member; and a plurality of optical fibers wound on said tension member; wherein each of said tension members is uniquely identifiable for identifying said each tension member from any other of said plurality of tension members, and each of said optical fibers within said optical fiber unit is uniquely identifiable for identifying said each optical fiber from any other of said plurality of optical fibers within said optical fiber unit.
Claim 2
Dependent Claim
106 words
An optical fiber composite overhead ground wire, comprising: two or more optical fiber units bundled together; and a plurality of ground wires provided externally to said units, each of said optical fiber units comprising: a tension member; and a plurality of optical fibers wound on said tension member; wherein each of said tension members is uniquely identifiable for identifying said each tension member from any other of said plurality of tension members, and each of said optical fibers within said optical fiber unit is uniquely identifiable for identifying said each optical fiber from any other of said plurality of optical fibers within said optical fiber unit.
Claim 3
Dependent Claim
20 words
An optical fiber composite overhead ground wire as recited in claim 1, wherein said identifying means are visual identifying means.
Claim 4
Dependent Claim
43 words
An optical fiber composite overhead ground wire as recited in claim 2, wherein each said plurality of optical fibers includes a same second identifying means for identifying each optical fiber from any other optical fiber within one of said pluralities of optical fibers.
Claim 5
Dependent Claim
30 words
An optical fiber composite overhead ground wire as recited in claim 3, wherein said second identifying means includes a different color surface on each of said plurality of optical fibers.
Claim 6
Dependent Claim
36 words
An optical fiber composite overhead ground wire as recited in claim 1, further comprising: a spacer in which said optical units are disposed; and a tube, said plurality of ground wires wound exteriorly to said spacer.
References Cited (Backward Citations)
DE2302662A1
Cited
US4235511A
Cited
EP0015425A2
Cited
DE3200760A1
Cited
US4696541A
Cited
US4693551A
Cited
EP0146757A1
Cited
US4671610A
Cited
US4701015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |