Patent US4733180A successfully refreshed from Google Patents.
US4046535A
Expired / Lapsed
US
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Glass melter having reflective top wall and method for using same
Assignee: Owens Corning
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Filing: 1975-09-24
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Granted: 1977-09-06
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Expires: 1995-09-24
Abstract
Abstract Method of and apparatus for supplying streams of molten glass including: a feeder with a chamber having an opening for supply of glass marbles for conversion to a molten body; a bottom wall for the chamber having orifices for discharging the molten glass as streams; means for heating the feeder; and a surface above the molten glass effective to reflect radiation so that reflected radiation is concentrated in a chamber where unmelted glass is present during melting.
Inventors
- 👤 Charles J. Stalego
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:52
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/081; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A feeder for supplying molten glass comprising: a. sidewalls; b. a bottom wall having at least one orifice for discharging molten glass; c. a resistance element within said feeder to convert unmelted glass to a molten condition; d. a top wall adapted to reflect vertically upwardly moving heat from molten glass in said feeder to a single focal point in said feeder above said resistance element; and, e. conduit means for introducing unmelted glass into said feeder.
Claim 2
Dependent Claim
77 words
A feeder for supplying molten glass comprising: a. sidewalls; b. a bottom wall having at least one orifice for discharging molten glass; c. a resistance element within said feeder to convert unmelted glass to a molten condition; d. a top wall adapted to reflect vertically upwardly moving heat from molten glass in said feeder to a single focal point in said feeder above said resistance element; and, e. conduit means for introducing unmelted glass into said feeder.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 in which said top wall defines a paraboloid of revolution.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 in which said conduit means is on a common vertical line with said focal point.
Claim 5
Independent Claim
85 words
The method of supplying streams of molten glass comprising: a. introducing unmelted glass into a feeder having a bottom wall which has orifices through which streams of molten glass are discharged; b. heating said unmelted glass with a resistance element positioned within said feeder to form a body of molten glass; and, c. reflecting vertically upwardly moving heat from one or a plurality of walls of said feeder to concentrate said heat at a single focal point positioned in said feeder above said resistance element.
Claim 6
Independent Claim
85 words
The method of supplying streams of molten glass comprising: a. introducing unmelted glass into a feeder having a bottom wall which has orifices through which streams of molten glass are discharged; b. heating said unmelted glass with a resistance element positioned within said feeder to form a body of molten glass; and, c. reflecting vertically upwardly moving heat from one or a plurality of walls of said feeder to concentrate said heat at a single focal point positioned in said feeder above said resistance element.
Claim 7
Dependent Claim
27 words
The method of claim 4 in which said heat is concentrated at the locus in said feeder at which the coolest of said unmelted glass is positioned.
Claim 8
Dependent Claim
20 words
The method of claim 5 in which said heat is reflected from a surface which is a paraboloid of revolution.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |