US3725558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass furnace
Assignee: SERSTEVENS MT
•
Filing: 1971-05-24
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Granted: 1973-04-03
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Expires: 1991-05-24
Abstract
Abstract This invention relates to a glass factory kiln comprising principal heating electrodes which transverse the bed and which, by conductivity, produce the thermal energy which, in normal operation, is necessary to keep a glass bath at the desired temperature. The kiln furthermore involves auxiliary heating electrodes which traverse the side walls and which, in the upper portion of the glass bath, produce a supporting thermal energy which makes it possible to control the upper level of the glass bath and thus the thickness of the compound layer which is on top of this glass bath.
Inventors
- 👤 Serstevens M T
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
A glass factory kiln comprising: a bottom having a vertical symmetry axis, lateral walls extending successively above said bottom along a regularly polygonal line centered on said symmetry axis, an arch carried by said lateral walls, charge openings for charging the solid elements of the compound layer, a plurality of extraction channels for extracting the molten glass, said extraction channels being provided in said lateral walls, at the level of said bottom, and being regularly located with respect to said symmetry axis, vertical electrodes extending upwards from said bottom into the glass bath and arranged regularly around said symmetry axis, said vertical electrodes producing the main thermal energy necessary for keeping the glass bath at the desired temperature, and and horizontal electrodes extending inwards from said lateral walls, all at the same level, into the upper portion of the glass bath and arranged regularly around said symmetry axis, for producing a supplementary thermal energy for controlling the temperature of said upper portion of said glass bath and the thickness of said compound layer.
Claim 2
Dependent Claim
173 words
A glass factory kiln comprising: a bottom having a vertical symmetry axis, lateral walls extending successively above said bottom along a regularly polygonal line centered on said symmetry axis, an arch carried by said lateral walls, charge openings for charging the solid elements of the compound layer, a plurality of extraction channels for extracting the molten glass, said extraction channels being provided in said lateral walls, at the level of said bottom, and being regularly located with respect to said symmetry axis, vertical electrodes extending upwards from said bottom into the glass bath and arranged regularly around said symmetry axis, said vertical electrodes producing the main thermal energy necessary for keeping the glass bath at the desired temperature, and and horizontal electrodes extending inwards from said lateral walls, all at the same level, into the upper portion of the glass bath and arranged regularly around said symmetry axis, for producing a supplementary thermal energy for controlling the temperature of said upper portion of said glass bath and the thickness of said compound layer.
Claim 3
Dependent Claim
17 words
The glass factory kiln of claim 1 wherein said charge openings are provided in said lateral walls.
Claim 4
Dependent Claim
16 words
The glass factory kiln of claim 1 wherein said charge openings are provided in said arch.
Claim 5
Dependent Claim
31 words
A glass factory kiln as claimed in claim 1 further comprising vertical electrodes extending upwards from the bottoms of the extraction channels into the molten glass contained in said extraction channels.
Claim 6
Dependent Claim
225 words
A glass factory kiln comprising: a bottom having a vertical symmetry axis, lateral walls extending successively above said bottom along a regularly polygonal line centered on said symmetry axis, an arch carried by said lateral walls, charge openings for charging the solid elements of the compound layer, said charge openings being provided in said lateral walls, extraction channels for extracting the molten glass, said extraction channels being provided in said lateral walls at the level of said bottom and being regularly located with respect to said symmetry axis, vertical electrodes extending upwards from said bottom into the glass bath and arranged regularly around said symmetry axis, said vertical electrodes producing the main thermal energy necessary for keeping the glass bath at the desired temperature, horizontal electrodes extending inwards from said lateral walls, all at the same level, into the upper portion of the glass bath and arranged regularly around said symmetry axis, said horizontal electrodes producing a supplementary thermal energy for controlling the temperature of said upper portion of said glass bath and the thickness of said compound layer, and a device for charging said solid elements of said compound layer through said charge openings, said charging device penetrating into the interior of the kiln at a movement speed controlled with the help of a reference pattern homologous to the internal configuration of said kiln.
Claim 7
Dependent Claim
225 words
A glass factory kiln comprising: a bottom having a vertical symmetry axis, lateral walls extending successively above said bottom along a regularly polygonal line centered on said symmetry axis, an arch carried by said lateral walls, charge openings for charging the solid elements of the compound layer, said charge openings being provided in said lateral walls, extraction channels for extracting the molten glass, said extraction channels being provided in said lateral walls at the level of said bottom and being regularly located with respect to said symmetry axis, vertical electrodes extending upwards from said bottom into the glass bath and arranged regularly around said symmetry axis, said vertical electrodes producing the main thermal energy necessary for keeping the glass bath at the desired temperature, horizontal electrodes extending inwards from said lateral walls, all at the same level, into the upper portion of the glass bath and arranged regularly around said symmetry axis, said horizontal electrodes producing a supplementary thermal energy for controlling the temperature of said upper portion of said glass bath and the thickness of said compound layer, and a device for charging said solid elements of said compound layer through said charge openings, said charging device penetrating into the interior of the kiln at a movement speed controlled with the help of a reference pattern homologous to the internal configuration of said kiln.
Claim 8
Dependent Claim
66 words
A glass factory kiln comprising vertical heating electrodes producing the main thermal energy for keeping the glass bath at desired temperature and a device for charging the solid elements of the compound layer through charge openings, said charging device penetrating into the interior of the kiln at a movement speed controlled with the help of a reference pattern homologous to the internal configuration of said kiln.
Claim 9
Dependent Claim
66 words
A glass factory kiln comprising vertical heating electrodes producing the main thermal energy for keeping the glass bath at desired temperature and a device for charging the solid elements of the compound layer through charge openings, said charging device penetrating into the interior of the kiln at a movement speed controlled with the help of a reference pattern homologous to the internal configuration of said kiln.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |