Patent US4708433A successfully refreshed from Google Patents.
US4708433A
Expired / Lapsed
US
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Optical connector and method of manufacturing a pair of ferrules therefor
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1985-09-04
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Granted: 1987-11-24
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Expires: 2005-09-04
Abstract
Abstract An optical connector for joining exposed fiber ends of coated fibers and a method of manufacturing a pair of ferrules for the optical connector. The optical connector includes a pair of the ferrules each having a flange, the coated fiber and a metal pipe molded integrally with one another by using molding resin, a coupling pin fitted through holes of the ferrules, a sleeve for receiving the metal pipes of the ferrules, and a housing member for axially clamping the ferrules to each other.
Inventors
- 👤 Toshiaki Kakii
- 👤 Koichiro Matsuno
- 👤 Shuzo Suzuki
- 👤 Fumihiro Ashiya
- 👤 Koushi Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:08
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3873; G02B6/3885; B; B29; B29C; B29C45/00; B29C45/14; B29C45/14467; G02B6/3833; G02B6/3865; G02B6/389; G02B6/3874; G02B6/3875; G02B6/3877
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A multi-fiber connector for joining exposed fiber ends of multicore coated fibers each having multiple optical fibers, comprising: a pair of ferrules each of which includes a plurality of said multicore coated fibers and a plurality of metal pipes molded integrally with each other by using molding resin such that said metal pipes act as a plurality of coupling portions of each of said ferrules, respectively; said multicore coated fibers being, respectively, extended through said metal pipes such that said exposed fiber ends of each of said multicore coated fibers are disposed at a distal end of each of said metal pipes; a plurality of sleeves into which said metal pipes of one of said ferrules and said metal pipes of the other one of said ferrules are fitted from opposite ends of said sleeves, respectively; and a housing member for axially clamping said ferrules to each other.
Claim 2
Dependent Claim
148 words
A multi-fiber connector for joining exposed fiber ends of multicore coated fibers each having multiple optical fibers, comprising: a pair of ferrules each of which includes a plurality of said multicore coated fibers and a plurality of metal pipes molded integrally with each other by using molding resin such that said metal pipes act as a plurality of coupling portions of each of said ferrules, respectively; said multicore coated fibers being, respectively, extended through said metal pipes such that said exposed fiber ends of each of said multicore coated fibers are disposed at a distal end of each of said metal pipes; a plurality of sleeves into which said metal pipes of one of said ferrules and said metal pipes of the other one of said ferrules are fitted from opposite ends of said sleeves, respectively; and a housing member for axially clamping said ferrules to each other.
Claim 3
Dependent Claim
21 words
A multi-fiber connector as claimed in claim 1, wherein said metal pipes of each of said ferrules have different outside diameters.
Claim 4
Dependent Claim
26 words
A multi-fiber connector as claimed in claim 1, wherein each of said ferrules is provided with a mark for indicating a coupling direction of said ferrules.
Claim 5
Dependent Claim
34 words
A multi-fiber connector as claimed in claim 1, wherein said coupling portions of each of said ferrules are so disposed in each of said ferrules as to indicate a coupling direction of said ferrules.
Claim 6
Dependent Claim
16 words
A multi-fiber connector as claimed in claim 1, wherein said sleeves are accommodated in a housing.
References Cited (Backward Citations)
FR2408844A1
Cited
JPS54127337A
Cited
JPS54160248A
Cited
US4470660A
Cited
JPS5928113A
Cited
EP0105597A2
Cited
JPS5988172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |