US4226504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of optical fibers
Assignee: BRAND-REX WILLIMATIC CT
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Filing: 1976-03-15
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Granted: 1980-10-07
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Expires: 1996-03-15
Abstract
Abstract There is provided a fiber optic cable wherein optical fibers are protected from breakage or damage utilizing a core having a fiber optic rod or rods intertwined with at least one thread made of nonfiber optic material. The core has an outer jacket over it which may be extruded in a conventional manner.
Inventors
- 👤 Robert A. Bellino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:42
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/441; G02B6/4414; G02B6/4402
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
A fiber optic communication system comprising: a core, said core including at least one glass fiber optic rod and at least one soft, cushiony shock absorbant thread; said rod providing a low loss optical communications channel independent of the remainder of said core; said at least one soft, cushiony shock absorbant thread being substantially spiralled about and being in contact with said fiber optic rod; the contact between said thread and said rod being nonperpendicular to the longitudinal axis of said rod; a jacket covering said core whereby said fiber optic rod is protected from mechanical stress by said soft, cushiony shock absorbant thread.
Claim 2
Dependent Claim
104 words
A fiber optic communication system comprising: a core, said core including at least one glass fiber optic rod and at least one soft, cushiony shock absorbant thread; said rod providing a low loss optical communications channel independent of the remainder of said core; said at least one soft, cushiony shock absorbant thread being substantially spiralled about and being in contact with said fiber optic rod; the contact between said thread and said rod being nonperpendicular to the longitudinal axis of said rod; a jacket covering said core whereby said fiber optic rod is protected from mechanical stress by said soft, cushiony shock absorbant thread.
Claim 3
Dependent Claim
98 words
A fiber optic cable comprising: a core, said core including at least one highly frangible fiber optic rod, and a soft, cushiony shock absorbant thread; said rod providing a low loss optical channel independent of the remainder of said core; said thread wound about and being in contact with said fiber optic rod in substantially a spiralled fashion; the contact between said thread and said rod being nonperpendicular to the longitudinal axis of said rod; an outer jacket enclosing said core, whereby said fiber optic rod is protected from mechanical stress by said soft, cushiony shock absorbant thread.
Claim 4
Dependent Claim
98 words
A fiber optic cable comprising: a core, said core including at least one highly frangible fiber optic rod, and a soft, cushiony shock absorbant thread; said rod providing a low loss optical channel independent of the remainder of said core; said thread wound about and being in contact with said fiber optic rod in substantially a spiralled fashion; the contact between said thread and said rod being nonperpendicular to the longitudinal axis of said rod; an outer jacket enclosing said core, whereby said fiber optic rod is protected from mechanical stress by said soft, cushiony shock absorbant thread.
Claim 5
Dependent Claim
26 words
A cable as set forth in claim 2 wherein the distance between each adjacent spiral turn is in the range of 1/4 inch to 12 inches.
Claim 6
Dependent Claim
16 words
A cable as set forth in claim 2 further including a plurality of fiber optic rods.
Claim 7
Dependent Claim
17 words
A cable as set forth in claim 2 further including a plurality of threads in said core.
Claim 8
Dependent Claim
41 words
A cable as set forth in claim 2, wherein said thread is made from a material which is not adapted to transmit optical signals, but is of sufficient mechanical strength and thickness to protect said fiber optic rod from mechanical stress.
Claim 9
Dependent Claim
21 words
A fiber optical cable as set forth in claim 2 wherein said at least one fiber optic rod is substantially straight.
Claim 10
Dependent Claim
24 words
A fiber optic cable as set forth in claim 2 wherein said at least one highly frangible fiber optic rod is made of glass.
References Cited (Backward Citations)
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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) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |