Patent US3925050A successfully refreshed from Google Patents.
US3925050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing glass having metal oxide coating
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 1974-02-01
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Granted: 1975-12-09
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Expires: 1994-02-01
Abstract
Abstract A process and an apparatus are provided for disposing of the exhaust gases which are generated in a step of forming a metal oxide coating on the surface of a sheet-like glass. It is well known that when a solution of a metal compound is sprayed onto the surface of the sheet glass at a high temperature, a metal oxide coating is formed on the glass surface and at the same time, large quantities of exhaust gases are generated by the heat decomposition of the metal compound, and that many of such exhaust gases are noxious. In accordance with this invention, the exhaust gases are conducted to the outside and fed into a glass melting furnace held at a high temperature, where the noxious substances are completely decomposed and rendered non-noxious. The invention can be performed at low installation costs, and no running cost is required. Since the present invention makes it possible to release the treated gases into the atmosphere from a chimney of the glass melting furnace, it is excellent as a measure for preventing pollution.
Inventors
- 👤 Akira Kushihashi
- 👤 Yutaka Fuziwara
- 👤 Naotomo Akashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:31
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/001; C03C17/002
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
77 words
A PROCESS FOR PRODUCING GLASS HAVING A METAL OXIDE COATING, WHICH COMPRISES A STEP OF COATING THE SURFACE OF HIGH TEMPERATURE GLASS WITH A HEAT-DECOMPOSABLE METAL COMPOUND OR ITS SOLUTION, A STEP OF SUCKING AND REMOVING EXHAUST GASES GENERATED IN SAID STEP FROM THE VICINITY OF THE SURFACE OF THE GLASS, AND A STEP OF FEEDING THE EXHAUST GASES SO REMOVED INTO A REGNERATOR CHAMBER OF A GLASS MELTING FURNACE AND THEN RELEASING THEM INTO THE ATMOSPHERE.
Claim 2
Dependent Claim
77 words
A PROCESS FOR PRODUCING GLASS HAVING A METAL OXIDE COATING, WHICH COMPRISES A STEP OF COATING THE SURFACE OF HIGH TEMPERATURE GLASS WITH A HEAT-DECOMPOSABLE METAL COMPOUND OR ITS SOLUTION, A STEP OF SUCKING AND REMOVING EXHAUST GASES GENERATED IN SAID STEP FROM THE VICINITY OF THE SURFACE OF THE GLASS, AND A STEP OF FEEDING THE EXHAUST GASES SO REMOVED INTO A REGNERATOR CHAMBER OF A GLASS MELTING FURNACE AND THEN RELEASING THEM INTO THE ATMOSPHERE.
Claim 3
Dependent Claim
115 words
A process for producing a ribbon-like glass having a metal oxide coating, which comprises a step of forming molten glass into a ribbon-like glass and advancing it, a step of spraying a heat-decomposable metal compound or its solution on to the surface of said ribbon-like glass while it is still hot, a step of removing the exhaust gases generated in the spraying step from the vicinity of the surface of the ribbon-like glass, a step of feeding the exhaust gases into a regenerator chamber of a glass melting furnace and releasing them into the atmosphere, and a step of advancing the ribbon-lkie glass having formed a metal oxide coating thereon further within an annealing lehr.
Claim 4
Dependent Claim
115 words
A process for producing a ribbon-like glass having a metal oxide coating, which comprises a step of forming molten glass into a ribbon-like glass and advancing it, a step of spraying a heat-decomposable metal compound or its solution on to the surface of said ribbon-like glass while it is still hot, a step of removing the exhaust gases generated in the spraying step from the vicinity of the surface of the ribbon-like glass, a step of feeding the exhaust gases into a regenerator chamber of a glass melting furnace and releasing them into the atmosphere, and a step of advancing the ribbon-lkie glass having formed a metal oxide coating thereon further within an annealing lehr.
Claim 5
Dependent Claim
112 words
A process for producing a ribbon-like glass having a metal oxide coating, which comprises spraying a heat-decomposable metal compound or its solution on the surface of a ribbon-like glass advancing between a molten metal bath tank and an annealing lehr or within the annealing lehr to form a coating of a metal oxide on the surface of the glass, a step of removing exhaust gases generated in said step, a step of feeding the removed exhaust gases into a regenerator chamber of a glass melting furnace, and releasing them into the atmosphere, and a step of advancing the ribbon-like glass having formed thereon a metal oxide coating, further through the annealing lehr.
Claim 6
Dependent Claim
112 words
A process for producing a ribbon-like glass having a metal oxide coating, which comprises spraying a heat-decomposable metal compound or its solution on the surface of a ribbon-like glass advancing between a molten metal bath tank and an annealing lehr or within the annealing lehr to form a coating of a metal oxide on the surface of the glass, a step of removing exhaust gases generated in said step, a step of feeding the removed exhaust gases into a regenerator chamber of a glass melting furnace, and releasing them into the atmosphere, and a step of advancing the ribbon-like glass having formed thereon a metal oxide coating, further through the annealing lehr.
Claim 7
Dependent Claim
26 words
The process of claim 2 wherein the exhaust gases removed are fed into a regenerator chamber on the air sucking side of the glass melting furnace.
Claim 8
Dependent Claim
33 words
The process of claim 2 wherein the exhaust gases removed are fed into a regenerator chamber of a glass melting furnace for forming the ribbon-like glass having formed thereon a metal oxide coating.
Claim 9
Independent Claim
77 words
AN APPARATUS FOR PRODUCING GLASS HAVING A METAL OXIDE COATING, COMPRISING MEANS FOR SPRAYING A HEAT-DECOMPOSABLE METAL COMPOUND OR ITS SOLUTION ONTO THE SURFACE OF GLASS HELD AT A HIGH TEMPERATURE, EXHAUSTING MEANS FOR SUCKING AND REMOVING EXHAUST GASES GENERATED AS A RESULT OF SPRAYING, FROM THE VICIMITY OF THE SURFACE OF THE GLASS, AND A CONDUIT FOR CONDUCTING EXHAUST GASES SUCKED AND REMOVED BY THE EXHAUST MEANS INTO A REGENERATOR CHAMBER OF A GLASS MELTING FURNACE.
Claim 10
Independent Claim
77 words
AN APPARATUS FOR PRODUCING GLASS HAVING A METAL OXIDE COATING, COMPRISING MEANS FOR SPRAYING A HEAT-DECOMPOSABLE METAL COMPOUND OR ITS SOLUTION ONTO THE SURFACE OF GLASS HELD AT A HIGH TEMPERATURE, EXHAUSTING MEANS FOR SUCKING AND REMOVING EXHAUST GASES GENERATED AS A RESULT OF SPRAYING, FROM THE VICIMITY OF THE SURFACE OF THE GLASS, AND A CONDUIT FOR CONDUCTING EXHAUST GASES SUCKED AND REMOVED BY THE EXHAUST MEANS INTO A REGENERATOR CHAMBER OF A GLASS MELTING FURNACE.
Claim 11
Independent Claim
116 words
An apparatus for producing a ribbon-like glass having a metal oxide coating, comprising a device for forming molten glass into a ribbon-like glass, means for transferring the formed ribbon-like glass, spray means running or oscillating toward the surface of the ribbon-like glass at a position where the temperature of the ribbon-like glass in transit is high, means for feeding a heat-decomposable metal compound or its solution to the spray means, exhaust means for sucking and removing exhaust gases generated from the sprayed metal compound or its solution, from the vicinity of the surface of the glass, and a conduit for conducting the sucked and removed exhaust gases into a regenerator chamber of a glass melting furnace.
Claim 12
Independent Claim
116 words
An apparatus for producing a ribbon-like glass having a metal oxide coating, comprising a device for forming molten glass into a ribbon-like glass, means for transferring the formed ribbon-like glass, spray means running or oscillating toward the surface of the ribbon-like glass at a position where the temperature of the ribbon-like glass in transit is high, means for feeding a heat-decomposable metal compound or its solution to the spray means, exhaust means for sucking and removing exhaust gases generated from the sprayed metal compound or its solution, from the vicinity of the surface of the glass, and a conduit for conducting the sucked and removed exhaust gases into a regenerator chamber of a glass melting furnace.
Claim 13
Independent Claim
139 words
An apparatus for producing a ribbon-like glass having a metal oxide coating, comprising a spray device for spraying a heat-decomposable metal compound or its solution onto the surface of a ribbon-like glass advancing between a molten metal bath tank and an annealing lehr or within the annealing lehr, said spray device being adapted to run or oscillate toward the surface of the ribbon-like glass in its widthwise direction, exhaust means for sucking and removing exhaust gases generated from the sprayed metal compound or its solution, from the vicinity of the surface of the ribbon-like glass through a pair of suction openings located on both sides of the running or oscillating path of said spray device, and a conduit for conducting the eXhaust gases sucked and removed by the exhaust means into a regenerator chamber of a glass melting furnace.
Claim 14
Independent Claim
139 words
An apparatus for producing a ribbon-like glass having a metal oxide coating, comprising a spray device for spraying a heat-decomposable metal compound or its solution onto the surface of a ribbon-like glass advancing between a molten metal bath tank and an annealing lehr or within the annealing lehr, said spray device being adapted to run or oscillate toward the surface of the ribbon-like glass in its widthwise direction, exhaust means for sucking and removing exhaust gases generated from the sprayed metal compound or its solution, from the vicinity of the surface of the ribbon-like glass through a pair of suction openings located on both sides of the running or oscillating path of said spray device, and a conduit for conducting the eXhaust gases sucked and removed by the exhaust means into a regenerator chamber of a glass melting furnace.
Claim 15
Dependent Claim
48 words
The apparatus of claim 7, wherein an exchanger cooperating with a gas exchanger of the glass melting furnace is provided in the passageway of said conduit so that the exhaust gases are always fed into a regenerator chamber on the air suction side of the glass melting furnace.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |