US4314834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating apparatus for manufacturing optical fibers
Assignee: US Philips Corp
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Filing: 1980-06-02
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Granted: 1982-02-09
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Expires: 2000-06-02
Abstract
Abstract Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, and, after drying of the coating, the fiber is wound onto a reel. For applying a coating to the fiber, the fiber is passed through a nozzle which has a polygonal nozzle opening.
Inventors
- 👤 Johannes Feenstra
- 👤 Marius A. F. Klop
- 👤 Wilhelmus C. P. M. Meerman
- 👤 Jan G. J. Peelen
- 👤 Hermanus N. Tuin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/027; C03B37/02718; C03B37/029; C03C25/12; C03B2205/00; C03B2205/60; C03B2205/62; C03B2205/63; C03B2205/70; C03B2205/80; C03B2205/82; C03B2205/90; C03B2205/98; Y; Y10; Y10S; Y10S118/00; Y10S118/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
An apparatus for manufacturing optical fibers comprising: means for holding and feeding a preform; means for heating the preform received from the holding and feeding means; means for drawing an optical fiber from the heated preform, said optical fiber having a substantially circular cross-section; and means for providing a protective coating on the fiber, said coating means comprising a funnel provided with a nozzle opening at an outlet end, said nozzle having a polygonal shape and having suitable dimensions such that a circle, having a diameter greater than the outside diameter of the fiber to be coated, may be inscribed in the nozzle opening.
Claim 2
Independent Claim
104 words
An apparatus for manufacturing optical fibers comprising: means for holding and feeding a preform; means for heating the preform received from the holding and feeding means; means for drawing an optical fiber from the heated preform, said optical fiber having a substantially circular cross-section; and means for providing a protective coating on the fiber, said coating means comprising a funnel provided with a nozzle opening at an outlet end, said nozzle having a polygonal shape and having suitable dimensions such that a circle, having a diameter greater than the outside diameter of the fiber to be coated, may be inscribed in the nozzle opening.
Claim 3
Dependent Claim
62 words
A coating apparatus, for providing a protective coating around optical fibers having substantially circular cross-sections, comprising a funnel provided with a nozzle opening at an outlet end, said nozzle having a polygonal shape and having suitable dimensions such that a circle, having a diameter greater than the outside diameter of the fiber to be coated, may be inscribed in the nozzle opening.
Claim 4
Dependent Claim
62 words
A coating apparatus, for providing a protective coating around optical fibers having substantially circular cross-sections, comprising a funnel provided with a nozzle opening at an outlet end, said nozzle having a polygonal shape and having suitable dimensions such that a circle, having a diameter greater than the outside diameter of the fiber to be coated, may be inscribed in the nozzle opening.
Claim 5
Dependent Claim
25 words
An apparatus as claimed in claim 1 or 2, wherein the funnel is provided with a plurality of adjustable segments which define the nozzle opening.
Claim 6
Dependent Claim
13 words
An apparatus as claimed in claim 3, wherein the nozzle opening is square.
Claim 7
Dependent Claim
13 words
An apparatus as claimed in claim 3, wherein the nozzle opening is triangular.
Claim 8
Dependent Claim
13 words
An apparatus as claimed in claim 3, wherein the nozzle opening is hexagonal.
Claim 9
Dependent Claim
28 words
An apparatus for manufacturing optical fibers, as claimed in claim 1, wherein the inscribed circle has a diameter approximately 10% larger than the outside diameter of the fiber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |