US4548630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibre fusion splicing
Assignee: STC PLC
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Filing: 1984-12-07
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Granted: 1985-10-22
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Expires: 2004-12-07
Abstract
Abstract A method and apparatus for fusion splicing optical fibres, in which the first clamping arrangement comprising arms 3 and 4 and clamps 3a, 4a pivots over from a first position to a second position in which magnetic fibre clamps 14a, 14b hold the fibre ends in a two-part fibre V-location 8a, 8b to precisely coaxially align the fibre ends. Fusion electrodes 11, 12 fuse the ends together.
Inventors
- 👤 Ryszard Biedka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/255; G02B6/2551
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
217 words
Apparatus for joining the ends of two optical fibres comprising: first and second spaced apart clamping means having first and second recesses, respectively, which are aligned axially for holding first and second optical fibres, respectively, in said first and second recesses by clamping the protective coatings of said fibres; third and fourth clamping means positioned between said first and second clamping means and having third and fourth recesses, respectively, which are aligned axially for holding said first and second optical fibres, respectively, in said third and fourth recesses by clamping said fibres; said first and second clamping means being pivotally mounted for movement about an axis parallel to the aligned axis of said fibres between a first position and a second position in which said four recesses are aligned along a common axis, said first and second clamping means being linked for pivotal movement together, and stop means for limiting the pivotal movement of said first and second clamping means to said second position; means for moving said first and second optical fibres along said common axis to adjust the relative positions of the ends of said optical fibres which are to be joined; and means located between said third and fourth clamping means for joining together said first and second optical fibres by fusing said ends.
Claim 2
Dependent Claim
217 words
Apparatus for joining the ends of two optical fibres comprising: first and second spaced apart clamping means having first and second recesses, respectively, which are aligned axially for holding first and second optical fibres, respectively, in said first and second recesses by clamping the protective coatings of said fibres; third and fourth clamping means positioned between said first and second clamping means and having third and fourth recesses, respectively, which are aligned axially for holding said first and second optical fibres, respectively, in said third and fourth recesses by clamping said fibres; said first and second clamping means being pivotally mounted for movement about an axis parallel to the aligned axis of said fibres between a first position and a second position in which said four recesses are aligned along a common axis, said first and second clamping means being linked for pivotal movement together, and stop means for limiting the pivotal movement of said first and second clamping means to said second position; means for moving said first and second optical fibres along said common axis to adjust the relative positions of the ends of said optical fibres which are to be joined; and means located between said third and fourth clamping means for joining together said first and second optical fibres by fusing said ends.
Claim 3
Dependent Claim
60 words
Apparatus for joining together the ends of two optical fibres according to claim 1 wherein said coupling means include a bar extending parallel to said common axis and between said first and second clamping means and said fixing means include a bar rest against which said bar rests when said first and second clamping means are in said second position.
Claim 4
Dependent Claim
61 words
Apparatus for joining together the ends of two optical fibres according to claim 1 wherein said third and fourth clamping means each include a surface in which one of said recesses for clamping one of said fibres is located and a pivotally mounted arm movable between an open position and a closed position in which said arm extends across said recess.
Claim 5
Dependent Claim
28 words
Apparatus for joining together the ends of two optical fibres according to claim 3 wherein said arm carries a rubberised magnetic material which is attracted to said surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |