US4779953A
Expired / Lapsed
US
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Optical fiber cord or cable containing a polyethylene filament tensile member
Assignee: Toyobo Co Ltd
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Filing: 1986-07-21
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Granted: 1988-10-25
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Expires: 2006-07-21
Abstract
Abstract An optical fiber cord or cable comprising at least one optical fiber and at least one tensile member for reinforcing said optical fiber, said tensile member comprising at least one polyethylene filament having a viscosity average molecular weight of not less than 200,000, a tenacity of not less than 20 g/d and a tensile modulus of not less than 600 g/d.
Inventors
- 👤 Toshihiko Ohta
- 👤 Fujio Okada
- 👤 Masahiro Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:19
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/4434; D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D01F6/02; D01F6/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
101 words
An optical fiber cord or cable comprising at least one optical fiber and at least one tensile member for reinforcing said optical fiber, each tensile member comprising at least one polyethylene filament having a viscosity average molecular weight of not less than 200,000, a tenacity of not less than 20 g/d, a tensile modulus of not less than 600 g/d, a viscosity rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) of not less than 60%, and a section area of not less than 0.018 mm 2 .
Claim 2
Dependent Claim
101 words
An optical fiber cord or cable comprising at least one optical fiber and at least one tensile member for reinforcing said optical fiber, each tensile member comprising at least one polyethylene filament having a viscosity average molecular weight of not less than 200,000, a tenacity of not less than 20 g/d, a tensile modulus of not less than 600 g/d, a viscosity rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) of not less than 60%, and a section area of not less than 0.018 mm 2 .
Claim 3
Dependent Claim
37 words
The optical fiber cord or cable according to claim 1, which comprises an optical fiber or a bundle of optical fibers and a plurality of tensile members surrounding the optical fiber or the bundle of optical fibers.
Claim 4
Dependent Claim
37 words
The optical fiber cord or cable according to claim 1, which comprises a tensile member or a bundle of tensile members and a plurality of optical fibers surrounding the tensile member or the bundle of tensile members.
Claim 5
Dependent Claim
21 words
The optical fiber cord or cable according to claim 1, 2, or 3, which has a protective shell at the outside.
Claim 6
Dependent Claim
20 words
The optical fiber cord or cable according to claim 4, wherein the protective shell is made of a metallic material.
Claim 7
Dependent Claim
20 words
The optical fiber cord or cable according to claim 4, wherein the proective shell is made of a plastic material.
Claim 8
Dependent Claim
20 words
The optical fiber cord or cable according claim 1, wherein the viscosity average molecular weight is not less than 300,000.
Claim 9
Dependent Claim
21 words
The optical fiber cord or cable according to claim 1, wherein the viscosity average molecular weight is not less than 1,000,000.
Claim 10
Dependent Claim
19 words
The optical fiber cord or cable according to claim 1, wherein the tenacity is not less than 23 g/d.
Claim 11
Dependent Claim
19 words
The optical fiber cord or cable according to claim 1, wherein the tenacity is not less than 25 g/d.
Claim 12
Dependent Claim
20 words
The optical fiber cord or cable according to claim 1, wherein the tensile modulus is not less than 700 g/d.
Claim 13
Dependent Claim
20 words
The optical fiber cord or cable according to claim 1, wherein the tensile modulus is not less than 800 g/d.
Claim 14
Dependent Claim
39 words
The optical fiber cord or cable according to claim 1, wherein the viscosity average molecular weight is not less than 300,000, the tenacity is not less than 23 g/d and the tensile modulus is not less than 700 g/d.
Claim 15
Dependent Claim
26 words
The optical fiber cord or cable according to claim 1, wherein the polyethylene filament has a section area of not less than 0.03 mm 2 .
Claim 16
Dependent Claim
26 words
The optical fiber cord or cable according to claim 1, wherein the polyethylene filament has a section area of not less than 0.05 mm 2 .
Claim 17
Dependent Claim
40 words
The optical fiber cord or cable according to claim 1, wherein the variation rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) is not less than 60%.
Claim 18
Dependent Claim
21 words
The optical fiber cord or cable according to claim 1, wherein the viscosity average molecular weight is not less than 500,000.
Claim 19
Dependent Claim
111 words
An optical fiber cord or cable comprising an optical fiber or a bundle of optical fibers and a plurality of tensile members surrounding the optical fiber or the bundle of optical fibers, each tensile member comprising at least one polyethylene filament having a viscosity average molecular weight of not less than 200,000, a tenacity of not less than 20 g/d, a tensile modulus of not less than 600 g/d and a variation rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) of not less than 60%, and a section area of not less than 0.018 mm 2 .
Claim 20
Dependent Claim
111 words
An optical fiber cord or cable comprising an optical fiber or a bundle of optical fibers and a plurality of tensile members surrounding the optical fiber or the bundle of optical fibers, each tensile member comprising at least one polyethylene filament having a viscosity average molecular weight of not less than 200,000, a tenacity of not less than 20 g/d, a tensile modulus of not less than 600 g/d and a variation rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) of not less than 60%, and a section area of not less than 0.018 mm 2 .
Claim 21
Dependent Claim
18 words
The optical fiber cord or cable according to claim 18, which has a protective shell at the outside.
Claim 22
Dependent Claim
19 words
The optical fiber cord or cable according to claim 18, wherein the protective shell is made of plastic material.
Claim 23
Dependent Claim
21 words
The optical fiber cord or cable according to claim 18, wherein the viscosity average molecular weight is not less than 300,000.
Claim 24
Dependent Claim
21 words
The optical fiber cord or cable according to claim 18, wherein the viscosity average molecular weight is not less than 1,000,000.
Claim 25
Dependent Claim
19 words
The optical fiber cord or cable according to claim 18, wherein the tenacity is not less than 23 g/d.
Claim 26
Dependent Claim
19 words
The optical fiber cord or cable according to claim 18, wherein the tenacity is not less than 25 g/d.
Claim 27
Dependent Claim
20 words
The optical fiber cord or cable according to claim 18, wherein the tensile modulus is not less than 700 g/d.
Claim 28
Dependent Claim
20 words
The optical fiber cord or cable according to claim 18, wherein the tensile modulus is not less than 800 g/d.
Claim 29
Dependent Claim
39 words
The optical fiber cord or cable according to claim 18, wherein the viscosity average molecular weight is not less than 300,000, the tenacity is not less than 23 g/d and the tensile modulus is not less than 700 g/d.
Claim 30
Dependent Claim
40 words
The optical fiber cord or cable according to claim 18, wherein the variation rate of the dynamic modulus at an elevated temperature (E' 80 ° C.) to that at room temperature (E' 20 ° C.) is not less than 70%.
Claim 31
Dependent Claim
21 words
The optical fiber cord or cable according to claim 18, wherein the viscosity average molecular weight is not less than 500,000.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
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