US3580976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating the temperature of glass at the outlet of a very high temperature glass melting furnace
Assignee: Individual
•
Filing: 1970-01-26
•
Granted: 1971-05-25
•
Expires: 1990-01-26
Abstract
Abstract The regulating device provides at its outlet a glass whose temperature is adapted to the use of conventional feeders, notwithstanding the very high temperature prevailing in the furnace with which the device is associated. The glass flows through an extension which is surrounded by an enclosure which has, first, a heat-permeable wall for cooling the glass and, then, a heat-impermeable wall. A resistance corrects the temperature of the glass in the outlet by means of a control loop.
Inventors
- 👤 Jacques Marie Yves Le Cl Bussy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:57
CPC Classifications
C; C03; C03B; C03B7/00; C03B7/08; C03B7/088; C03B5/00; C03B5/02; C03B5/027; C03B5/0275; C03B5/16; C03B5/24; F; F27; F27D; F27D3/00; F27D3/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
39 words
A device as claimed in claim 1, wherein said enclosure is filled with a reducing gas supplied at a pressure slightly higher than atmospheric pressure, excess of this gas being taken off at the lower end of the enclosure.
Claim 2
Dependent Claim
37 words
A device as claimed in claim 1, wherein a sleeve of platinum extends the wall of said extracting passage at the lower end of said extension so as to protect the material of the extension from oxidation.
Claim 3
Dependent Claim
27 words
A device as claimed in claim 1, comprising a heating element surrounding the portion of said tubular extension which extends through said upper part of the enclosure.
Claim 4
Dependent Claim
64 words
A device as claimed in claim 1, comprising a valve member located in the outlet orifice of said tubular extension and having a shape matching the shape of the outlet orifice, and means for adjusting the valve member in height so as to define a flow passage whose size is adjustable as a function of the characteristics of the glass melted in the furnace.
Claim 5
Dependent Claim
44 words
A device as claimed in claim 5, wherein a heat-responsive element is incorporated in said valve member, said responsive element being connected to a control loop having an output which supplies power to said heating element located in said lower part of the enclosure.
Claim 6
Dependent Claim
24 words
A device as claimed in claim 1, comprising a metal tube defining the upper part of said enclosure, and means for cooling said tube.
Claim 7
Dependent Claim
23 words
A device as claimed in claim 7, wherein said cooling means comprise a coil of cooling pipe adapted to receive a cooling liquid.
Claim 8
Dependent Claim
32 words
A device as claimed in claim 1, comprising a structure defining the lower part of the enclosure, said structure including an annular inner chamber and a heat-insulating material in said inner chamber.
Claim 9
Dependent Claim
21 words
A device as claimed in claim 9, wherein said heat-insulating material comprises a mass of hollow aluminum balls of small diameter.
Claim 10
Dependent Claim
39 words
A device as claimed in claim 1, comprising an expansion joint closing the lower end of the enclosure, the expansion joint being fixed to an end of said tubular extension and to a fixed part of the regulating device.
Claim 11
Dependent Claim
25 words
A device as claimed in claim 5, wherein said outlet orifice is downwardly divergent and has a conicity matching the conicity of said valve member.
References Cited (Backward Citations)
US1622666A
Cited
US2830107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |