US5319730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable construction containing optical fibers and reinforcement means
Assignee: Nokia Kaapeli Oy
•
Filing: 1991-07-18
•
Granted: 1994-06-07
•
Expires: 2011-07-18
Abstract
Abstract A cable construction comprising at least one package (3) of fibre ribbons, which package consists of at least one fibre ribbon (4) comprising several parallel optical fibres (5) and a covering (6) joining them together, and at least one reinforcing member (7a) extending in the longitudinal direction of the cable. The package (3) of fibre ribbons is arranged in a cavity (2) with an elongated cross-section in the vertical direction such that the natural bending plane (A) of the fibre ribbon package (3) is substantially perpendicular with respect to the longitudinal plane (B) of the cavity. The reinforcing member (7a) is arranged in the cable construction in such a way that the bending plane (D) of the whole cable defined thereby also is substantially perpendicular with respect to the longitudinal plane (B) of the cavity.
Inventors
- 👤 Timo Rasanen
- 👤 Jussi Ravela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/441; G02B6/4411; G02B6/4403; G02B6/4429; G02B6/443; G02B6/4432; G02B6/4433
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
A cable construction comprising a cable having a substantially circular cross-section with vertical and horizontal diametral axes, said cable having a cavity extending lengthwise along the cable, said cavity being centered on the vertical axis and elongated in the vertical direction, a package of fibre ribbons in said cavity, each said ribbon including a plurality of parallel optical fibres stacked one on the other in the vertical direction such that the fibres are confined in the horizontal direction but have free play in the vertical direction, and reinforcing means extending lengthwise in said cable, said reinforcing means being centered on said horizontal axis and being substantially symmetrically arranged relative to said vertical axis to provide less bending resistance around said horizontal axis than around said vertical axis, said cable having a core part constituting said reinforcing means, said core part providing said cavity therewithin.
Claim 2
Dependent Claim
144 words
A cable construction comprising a cable having a substantially circular cross-section with vertical and horizontal diametral axes, said cable having a cavity extending lengthwise along the cable, said cavity being centered on the vertical axis and elongated in the vertical direction, a package of fibre ribbons in said cavity, each said ribbon including a plurality of parallel optical fibres stacked one on the other in the vertical direction such that the fibres are confined in the horizontal direction but have free play in the vertical direction, and reinforcing means extending lengthwise in said cable, said reinforcing means being centered on said horizontal axis and being substantially symmetrically arranged relative to said vertical axis to provide less bending resistance around said horizontal axis than around said vertical axis, said cable having a core part constituting said reinforcing means, said core part providing said cavity therewithin.
Claim 3
Dependent Claim
16 words
A cable construction according to claim 1, wherein said core part has a substantially ellipse-shaped cross-section.
Claim 4
Dependent Claim
40 words
A cable construction according to claim 1, wherein said core part is substantially rectangular in cross-section and includes a peripheral part and at least two said cavities in parallel relation, said core part as a whole constituting the reinforcing means.
Claim 5
Dependent Claim
40 words
A cable construction according to claim 1, wherein said core part is substantially rectangular in cross-section and includes a peripheral part and partition walls enclosing at least two said cavities in parallel relation, said peripheral part constituting the reinforcing means.
Claim 6
Dependent Claim
33 words
A cable construction according to claim 4, wherein said cable has an outer surface provided with grooved, reinforcement portions arranged solely in areas closet to ends of the cavity on said vertical axis.
Claim 7
Dependent Claim
144 words
A cable construction comprising a cable having a substantially circular cross-section with vertical and horizontal diametral axes, said cable having a cavity extending lengthwise along the cable, said cavity being centered on the vertical axis and elongated in the vertical direction, a package of fibre ribbons in said cavity, each said ribbon including a plurality of parallel optical fibres stacked one on the other in the vertical direction such that the fibres are confined in the horizontal direction but have free play in the vertical direction, and reinforcing means extending lengthwise in said cable, said reinforcing means being centered on said horizontal axis and being substantially symmetrically arranged relative to said vertical axis to provide less bending resistance around said horizontal axis than around said vertical axis, said reinforcing means comprising a profile member centrally arranged in said cable and providing said cavity therewithin.
Claim 8
Dependent Claim
144 words
A cable construction comprising a cable having a substantially circular cross-section with vertical and horizontal diametral axes, said cable having a cavity extending lengthwise along the cable, said cavity being centered on the vertical axis and elongated in the vertical direction, a package of fibre ribbons in said cavity, each said ribbon including a plurality of parallel optical fibres stacked one on the other in the vertical direction such that the fibres are confined in the horizontal direction but have free play in the vertical direction, and reinforcing means extending lengthwise in said cable, said reinforcing means being centered on said horizontal axis and being substantially symmetrically arranged relative to said vertical axis to provide less bending resistance around said horizontal axis than around said vertical axis, said reinforcing means comprising a profile member centrally arranged in said cable and providing said cavity therewithin.
Claim 9
Dependent Claim
33 words
A cable construction according to claim 6, wherein said cable has an outer surface provided with grooved, reinforcement portions arranged solely in areas closest to ends of the cavity on said vertical axis.
References Cited (Backward Citations)
EP0022036A1
Cited
JPS58150907A
Cited
JPS58211713A
Cited
US4859025A
Cited
US4846566A
Cited
GB2215081A
Cited
GB2219100A
Cited
US4997257A
Cited
US4979794A
Cited
WO1991000477A1
Cited
US5163116A
Cited
US5067830A
Cited
US5224191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |