Patent US3758019A successfully refreshed from Google Patents.
Patent US4136828A successfully refreshed from Google Patents.
US4136828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxide depositing ribbon burner
Assignee: Corning Glass Works
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Filing: 1977-06-27
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Granted: 1979-01-30
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Expires: 1997-06-27
Abstract
Abstract An elongated burner for producing a stream of metal oxide soot comprises a burner face having two parallel arrays of orifices for issuing a gas-oxygen mixture to produce two intersecting linear flames. Disposed between the gas-oxygen orifices is an array of orifices for issuing metal halide vapor into the flame. Two parallel arrays of orifices, one on each side of the vapor orifices and closely spaced therewith provide high velocity jets of inner shield gas on opposite sides of the vapor streams. Disposed between the inner shield gas orifices and the gas-oxygen orifices are two elongated slots which are much greater in width than the diameters of the aforementioned orifices. These slots provide a large volume, low pressure dry, nonreactive gas which prevents the flame from "backsplashing" onto the region of the vapor orifices and further prevents the deposition of soot on the burner face.
Inventors
- 👤 Joseph W. Anderson
- 👤 Donald L. Guile
- 👤 Roy E. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:16
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; C; C03; C03B; C03B19/00; C03B19/14; C03B19/1415; C03B19/1423; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/01413; C03B37/0142; C03B2207/00; C03B2207/02; C03B2207/20; C03B2207/42; C03B2207/50; C03B2207/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A burner for producing a flame in which a reactant gas undergoes a chemical reaction comprising a housing, a portion of which defines a burner face, means in said housing defining a first linear array of orifices for providing a plurality of streams of said reactant gas, means in said housing defining second and third parallel linear arrays of orifices, for directing angled streams of combustible gas which intersect the streams of reactant gas, said second and third arrays being disposed on opposite sides of said first array and being equally spaced therefrom, and means disposed between said first array of orifices and said second and third arrays of orifices, respectively, for providing a first shield gas at a velocity less than that with which said reactant gas issues from said first orifices, the total flow rate of said first shield gas being greater than that of said reactant gas, said means for providing a first shield gas comprising first and second elongated rectangular slots in said burner face, one of said slots being disposed between said first linear array and each of said second and third linear arrays, the width of each of said slots being at least one half the distance between said first and second arrays.
Claim 2
Dependent Claim
209 words
A burner for producing a flame in which a reactant gas undergoes a chemical reaction comprising a housing, a portion of which defines a burner face, means in said housing defining a first linear array of orifices for providing a plurality of streams of said reactant gas, means in said housing defining second and third parallel linear arrays of orifices, for directing angled streams of combustible gas which intersect the streams of reactant gas, said second and third arrays being disposed on opposite sides of said first array and being equally spaced therefrom, and means disposed between said first array of orifices and said second and third arrays of orifices, respectively, for providing a first shield gas at a velocity less than that with which said reactant gas issues from said first orifices, the total flow rate of said first shield gas being greater than that of said reactant gas, said means for providing a first shield gas comprising first and second elongated rectangular slots in said burner face, one of said slots being disposed between said first linear array and each of said second and third linear arrays, the width of each of said slots being at least one half the distance between said first and second arrays.
Claim 3
Dependent Claim
57 words
A burner in accordance with claim 1 further comprising third and fourth parallel linear arrays of orifices for providing a plurality of streams of a second shield gas, said third array being disposed between said first array and said first rectangular slot, and said fourth array being disposed between said first array and said second rectangular slot.
Claim 4
Dependent Claim
61 words
A burner in accordance with claim 2 further comprising manifold means for supplying said first shield gas, and first and second distribution slots, one of said distribution slots connecting said manifold means to each rectangular slot, the cross-sectional area of each rectangular slot at said burner face being at least ten times the cross-sectional area of each of said distribution slots.
Claim 5
Dependent Claim
40 words
A burner in accordance with claim 3 wherein each of said rectangular slots comprises two elongated walls that extend the length of said arrays of orifices, both walls of each rectangular slot being angled toward said streams of reactant gas.
Claim 6
Dependent Claim
21 words
A burner in accordance with claim 4 wherein the width of each of said rectangular slots increases toward said burner face.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |