US5067830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indented tube for optical ribbon
Assignee: Corning Research and Development Corp
•
Filing: 1990-12-21
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Granted: 1991-11-26
•
Expires: 2010-12-21
Abstract
Abstract Disclosed is a tube holding optical fibers or optical ribbons, the tube having indentations in its inner and outer surfaces. The indentations are adjacent to better enable opening of the tube to gain access to the ribbons.
Inventors
- 👤 Warren W. McAlpine
- 👤 Dieter Kundis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:15
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/441; G02B6/4411; G02B6/4403; G02B6/4429; G02B6/443; G02B6/4431
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
40 words
An optical cable element, comprising: (a) a tube having a first lengthwise indentation in its outer surface and a second lengthwise identation in its inner surface adjacent to the first lengthwise indentation; and (b) an optical waveguide within the tube.
Claim 2
Dependent Claim
40 words
An optical cable element, comprising: (a) a tube having a first lengthwise indentation in its outer surface and a second lengthwise identation in its inner surface adjacent to the first lengthwise indentation; and (b) an optical waveguide within the tube.
Claim 3
Dependent Claim
44 words
an optical cable element as recited in claim 1, wherein the tube has a third lengthwise indentation in its outer surface located 180° from the first lengthwise indentation and a fourth lengthwise indentation in its inner surface located 180° from the second lengthwise indentation.
Claim 4
Dependent Claim
41 words
An optical cable element, comprising: (a) a tube having a first lengthwise indentation in its outer surface and a second lengthwise indentation in its inner surface adjacent to the first lengthwise indentation; and (b) an optical waveguide ribbon within the tube.
Claim 5
Dependent Claim
41 words
An optical cable element, comprising: (a) a tube having a first lengthwise indentation in its outer surface and a second lengthwise indentation in its inner surface adjacent to the first lengthwise indentation; and (b) an optical waveguide ribbon within the tube.
Claim 6
Dependent Claim
44 words
An optical cable element as recited in claim 3, wherein the tube has a third lengthwise indentation in its outer surface located 180° from the first lengthwise indentation and a fourth lengthwise indentation in its inner surface located 180° from the second lengthwise indentation.
Claim 7
Dependent Claim
30 words
An optical cable element as recited in claim 4, wherein the optical waveguide ribbon is oriented such that the second lengthwise indentation is next to the middle of the ribbon.
Claim 8
Dependent Claim
21 words
An optical cable element as recited in claim 5, wherein the optical waveguide ribbon has an even number of optical waveguides.
Claim 9
Dependent Claim
36 words
An optical cable element as recited in claim 6, wherein the space between the two middle optical waveguides in the ribbon is greater than the distance between any other two adjacent optical waveguides in the ribbon.
Claim 10
Dependent Claim
30 words
An optical cable element as recited in claim 3, wherein the optical waveguide ribbon is oriented such that the second lengthwise indentation is next to the middle of the ribbon.
Claim 11
Dependent Claim
21 words
An optical cable element as recited in claim 8, wherein the optical waveguide ribbon contains an even number of optical waveguides.
Claim 12
Dependent Claim
36 words
An optical cable element as recited in claim 9, wherein the distance between the two middle optical waveguides in the ribbon is greater than the distance between any other two adjacent optical waveguides in the ribbon.
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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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |