Patent US4927229A successfully refreshed from Google Patents.
US4927229A
Expired / Lapsed
US
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Optical cable coupling adapter
Assignee: EIDP Inc
•
Filing: 1989-01-06
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Granted: 1990-05-22
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Expires: 2009-01-06
Abstract
Abstract An optical cable coupling adapter comprises two end portions and a split sleeve. Each end portion holds a plurality of cylindrical rods with their outer circumferences kept in contact with one another. The cylindrical rods define one or more passages for an optical fiber. The split sleeve contacts and holds the exposed outer circumferential surfaces of the cylindrical rods and effects center alignment of the fiber passages in the two end portions.
Inventors
- 👤 Yoshiyasu Tanaka
- 👤 Toshimi Nagaishi
- 👤 Mituyoshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:28
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3834; G02B6/3841; G02B6/3842; G02B6/3873; G02B6/3874; G02B6/3877
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
An optical cable coupling adapter comprising two end portions each holding a plurality of cylindrical rods with their outer circumferences kept in contact with one another, the cylindrical rods in each end portion defining a passage for an optical fiber, and a single piece nearly polygonal split sleeve adapted to make contact with the exposed outer circumferential surfaces of the cylindrical rods and effect center alignment of the fiber passages in the two end portions.
Claim 2
Dependent Claim
75 words
An optical cable coupling adapter comprising two end portions each holding a plurality of cylindrical rods with their outer circumferences kept in contact with one another, the cylindrical rods in each end portion defining a passage for an optical fiber, and a single piece nearly polygonal split sleeve adapted to make contact with the exposed outer circumferential surfaces of the cylindrical rods and effect center alignment of the fiber passages in the two end portions.
Claim 3
Dependent Claim
27 words
The optical cable coupling adapter of claim 1 in which each end portion has three said cylindrical rods and one optical fiber passage defined by the rods.
Claim 4
Dependent Claim
26 words
The optical cable coupling adapter of claim 1 in which each portion has four said cylindrical rods and two optical fiber passages defined by the rods.
Claim 5
Dependent Claim
39 words
The optical cable coupling adapter of claim 1 in which each end portion has six said cylindrical rods arranged so as to have a nearly triangular section as a whole, and four optical fiber passages defined by the rods.
Claim 6
Dependent Claim
27 words
The optical cable coupling adapter of any one of claim 1 to 4 in which the radii of the cylindrical rods are substantially equal to each other.
Claim 7
Dependent Claim
26 words
The optical fiber coupling adapter of any one of claims 1 to 4 in which the radii of the cylindrical rods are different from each other.
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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) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |