US3837824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing optical fiber under superatmospheric pressure
Assignee: American Optical Corp
•
Filing: 1973-05-29
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Granted: 1974-09-24
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Expires: 1993-05-29
Abstract
Abstract Heating and drawing bundles of optical fibers under superatmospheric pressure to avoid the formation of gas bubbles therewithin and blemishing caused by their inclusions in components drawn from the bundle. Apparatus is provided within which heating and drawing of the bundle of optical fibers is accomplished in a pressure chamber while the component being drawn therefrom is continuously removed from the chamber through a fluid sealed gland.
Inventors
- 👤 W Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:51
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
149 words
The method of drawing a continuous multiple fiber component from one end of a bundle of juxtapositioned light-conducting fibers comprising the steps of: placing the bundle of fibers within a pressure chamber; heating one end of said bundle to a temperature conducive to drawing within said chamber; drawing a portion of said heated end of said bundle into a preliminary length of said multiple fiber component; directing said preliminary length of said drawn component outwardly of said chamber through gland means, said gland means containing a liquid for sealing said chamber for pressurization; pressurizing said chamber sufficiently to at least substantially prevent outgasing of materials of said bundle during continued heating and further drawing of said bundle; and further heating and continuously drawing said bundle to a desired final length of multiple fiber component while maintaining sufficient liquid in said gland means for retaining said pressurization of said chamber.
Claim 2
Independent Claim
149 words
The method of drawing a continuous multiple fiber component from one end of a bundle of juxtapositioned light-conducting fibers comprising the steps of: placing the bundle of fibers within a pressure chamber; heating one end of said bundle to a temperature conducive to drawing within said chamber; drawing a portion of said heated end of said bundle into a preliminary length of said multiple fiber component; directing said preliminary length of said drawn component outwardly of said chamber through gland means, said gland means containing a liquid for sealing said chamber for pressurization; pressurizing said chamber sufficiently to at least substantially prevent outgasing of materials of said bundle during continued heating and further drawing of said bundle; and further heating and continuously drawing said bundle to a desired final length of multiple fiber component while maintaining sufficient liquid in said gland means for retaining said pressurization of said chamber.
Claim 3
Dependent Claim
22 words
The method according to claim 1 further including the step of continuously lowering said bundle of fibers during said further drawing thereof.
References Cited (Backward Citations)
US1771055A
Cited
US2958899A
Cited
US3410672A
Cited
US3395006A
Cited
US3660062A
Cited
US3690853A
Cited
US3788827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |