US4092396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber bundle consolidation
Assignee: International Telephone and Telegraph Corp
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Filing: 1977-03-11
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Granted: 1978-05-30
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Expires: 1997-03-11
Abstract
Abstract A fiber optic cable for use in a fiber optic connector in which a ferrule is compressed around the end of the fiber bundle in the cable. The bore in the ferrule has a cylindrical wall with circumferentially spaced flat surfaces thereon which minimize the compression hoop effects on the peripheral fibers of the bundle, thereby maximizing fiber bundle consolidation.
Inventors
- 👤 Ronald L. McCartney
- 👤 Vaughn C. Hogan
- 👤 Eleanor A. Landgreen
- 👤 Michael I. Bauerkemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/40; G02B6/403; G02B6/406; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A method of consolidating a fiber bundle in a plastic ferrule having a cylindrical bore therein comprising the steps of: forming circumferentially spaced, longitudinally extending, flat surfaces on the cylindrical wall of said bore adjacent to the forward end of said ferrule with said flat surfaces joined by arcuate segments of said cylindrical wall; inserting a fiber bundle into said ferrule from the rear end thereof until the forward end of said bundle is approximately coplanar with the forward end of said ferrule; and applying a compressive external force to the outer surface of said ferrule adjacent to said forward end thereof to constrict said ferrule around said bundle and consolidate the fibers in said bundle into a closed pack array.
Claim 2
Independent Claim
121 words
A method of consolidating a fiber bundle in a plastic ferrule having a cylindrical bore therein comprising the steps of: forming circumferentially spaced, longitudinally extending, flat surfaces on the cylindrical wall of said bore adjacent to the forward end of said ferrule with said flat surfaces joined by arcuate segments of said cylindrical wall; inserting a fiber bundle into said ferrule from the rear end thereof until the forward end of said bundle is approximately coplanar with the forward end of said ferrule; and applying a compressive external force to the outer surface of said ferrule adjacent to said forward end thereof to constrict said ferrule around said bundle and consolidate the fibers in said bundle into a closed pack array.
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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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |