Patent US5013127A successfully refreshed from Google Patents.
US5013127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible fiber optic distribution cable
Assignee: Corning Research and Development Corp
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Filing: 1990-04-26
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Granted: 1991-05-07
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Expires: 2010-04-26
Abstract
Abstract Described is a fiber optic distribution cable having increased flexibility despite the presence of a metallic shield. The shield is a metal tape having dense transverse corrugations. Flexibility also arises from the use of multiple strength members and filaments rather than a single tensile strength member. Such flexibility is highly useful when routing the cable through distribution pedestals.
Inventors
- 👤 Werner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:22
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; G02B6/4432; G02B6/4431; G02B6/4435
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
44 words
A fiber optic cable, comprising: (a) a first tube containing a plurality of optical fibers; (b) a second tube containing the first tube; and, (c) a metallic tube having at least 15 transverse corrugations per inch between the first tube and the second tube.
Claim 2
Dependent Claim
44 words
A fiber optic cable, comprising: (a) a first tube containing a plurality of optical fibers; (b) a second tube containing the first tube; and, (c) a metallic tube having at least 15 transverse corrugations per inch between the first tube and the second tube.
Claim 3
Dependent Claim
21 words
A fiber optic cable as recited in claim 1, wherein the metallic tube has at least 22 transverse corrugations per inch.
Claim 4
Dependent Claim
22 words
A fiber optic cable as recited in claim 2, wherein the metallic tube has a corrugation depth of less than 0.30 millimeters.
Claim 5
Dependent Claim
20 words
A fiber optic cable as recited in claim 3 having a long term minimum bending radius not exceeding 150 millimeters.
Claim 6
Dependent Claim
21 words
A fiber optic cable as recited in claim 2, wherein the metallic tube comprises a steel tape having a longitudinal seam.
Claim 7
Dependent Claim
74 words
A fiber optic cable, comprising: (a) a plurality of light waveguides being mechanically combined in the form of light waveguide pairs; (b) a first plastic tube containing said light waveguide pairs and a waterblocking material; (c) a metallic tube having at least 22 transverse corrugations per inch containing the first plastic tube; (d) reinforcing members between the metallic tube and the first plastic tube; and, (e) a second plastic tube containing the metallic tube.
Claim 8
Dependent Claim
74 words
A fiber optic cable, comprising: (a) a plurality of light waveguides being mechanically combined in the form of light waveguide pairs; (b) a first plastic tube containing said light waveguide pairs and a waterblocking material; (c) a metallic tube having at least 22 transverse corrugations per inch containing the first plastic tube; (d) reinforcing members between the metallic tube and the first plastic tube; and, (e) a second plastic tube containing the metallic tube.
Claim 9
Dependent Claim
22 words
A fiber optic cable as recited in claim 6, wherein the metallic tube has a corrugation depth of less than 0.30 millimeters.
Claim 10
Dependent Claim
20 words
A fiber optic cable as recited in claim 6 having a long term minimum bending radius not exceeding 150 millimeters.
Claim 11
Dependent Claim
20 words
A fiber optic cable as recited in claim 7 having a long term minimum bending radius not exceeding 150 millimeters.
Claim 12
Dependent Claim
56 words
A fiber optic cable as recited in claim 7, wherein each optical fiber in a light waveguide pair is coated with a rubber or plastic material and the pair is joined by the rubber or plastic material having a thickness less than the outer diameter of either of the two coated light waveguides of the pair.
Claim 13
Dependent Claim
23 words
A fiber optic cable as recited in claim 10, wherein the first plastic tube is notched and a ripcord underlies the metallic tube.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |