US3897202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for heating open melting baths, especially galvanizing baths, enameling baths and glass baths
Assignee: SAG SIEGENER AG
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Filing: 1974-03-26
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Granted: 1975-07-29
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Expires: 1994-03-26
Abstract
Abstract A method of and device for heating open melting baths, e.g. galvanizing baths, enameling baths, glass baths and the like, according to which an inert gas is by means of pipes, passages, slots and the like introduced into the respective bath and is withdrawn above the pipes and the like when no articles are to be immersed into the bath for treatment therein, whereas, when articles are to be immersed into the bath for treatment therein, the inert gas is withdrawn outside the path of movement of such articles or outside a device for feeding and withdrawing additional substances into and out of the bath respectively.
Inventors
- 👤 Werner Ackermann
- 👤 Frohmut Vollhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:35
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/08; F27B14/14; C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/2356; C23; C23C; C23C2/00; C23C2/003; C23C2/0036; C23D; C23D9/00; F27D; F27D3/00; F27D3/16
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
76 words
The method of treating an article in a heated liquid bath which comprises immersing said article in said bath in an open immersion area and heating the liquid by circulating an inert gas through a system closed to atmosphere, heating said gas and introducing said gas into said liquid below the surface spaced from said immersion area and collecting said gas passing upwardly through the surface of said liquid to continue circulation without exposure to air.
Claim 2
Independent Claim
76 words
The method of treating an article in a heated liquid bath which comprises immersing said article in said bath in an open immersion area and heating the liquid by circulating an inert gas through a system closed to atmosphere, heating said gas and introducing said gas into said liquid below the surface spaced from said immersion area and collecting said gas passing upwardly through the surface of said liquid to continue circulation without exposure to air.
Claim 3
Dependent Claim
39 words
The method of treating an article as claimed in claim 1, in which said article is a web, which further comprises passing said web through a chamber and circulating said inert gas through said chamber to heat said web.
Claim 4
Dependent Claim
39 words
The method of treating an article as claimed in claim 1, which further comprises shielding said gas from said immersion area in said bath, to direct said gas upwardly to the surface and confine it to the closed system.
Claim 5
Dependent Claim
44 words
A method in combination to claim 1 for treating bodies and articles to be immersed in the bath, which includes the steps of: directing the gas after leaving the bath onto the article to be treated in the bath and subsequently heating said gas.
Claim 6
Dependent Claim
33 words
A method in combination according to claim 1 which includes the steps of: directing the gas after leaving the bath onto the article treated in the bath, and subsequently heating the inert gas.
Claim 7
Dependent Claim
42 words
A method in combination according to claim 1, which includes the step of filling the container up to a level above the mouth of the conduits and the lower end of a withdrawing passage means of the container for the inert gas.
Claim 8
Independent Claim
164 words
A device for heating open melting baths, especially enameling baths, lead coating baths, metal baths, and glass baths, which includes: container means adapted to receive a melting bath, upright partition means arranged within said container means and at least partially defining gas receiving space means adapted at the upper and lower end portions thereof to communicate with the respective adjacent container space outside said gas receiving means, first conduit means leading into the upper portion of and downwardly in said gas receiving space means for conveying inert gas into said gas receiving space means, collector means arranged above said gas receiving space means for collecting gas ascending in said gas receiving space means, compressor means arranged outside said container means and communicating with said collector means for receiving collected gas therefrom and compressing same, heat exchanger means communicating with said compressor means for receiving said inert gas therefrom, and second conduit means establishing communication between said heat exchanger means and said first conduit means.
Claim 9
Independent Claim
164 words
A device for heating open melting baths, especially enameling baths, lead coating baths, metal baths, and glass baths, which includes: container means adapted to receive a melting bath, upright partition means arranged within said container means and at least partially defining gas receiving space means adapted at the upper and lower end portions thereof to communicate with the respective adjacent container space outside said gas receiving means, first conduit means leading into the upper portion of and downwardly in said gas receiving space means for conveying inert gas into said gas receiving space means, collector means arranged above said gas receiving space means for collecting gas ascending in said gas receiving space means, compressor means arranged outside said container means and communicating with said collector means for receiving collected gas therefrom and compressing same, heat exchanger means communicating with said compressor means for receiving said inert gas therefrom, and second conduit means establishing communication between said heat exchanger means and said first conduit means.
Claim 10
Dependent Claim
51 words
A device according to claim 7, which comprises a heater including said heat exchanger means and also including a burner and an air preheater for combustion air for said burner, and third conduit means leading from said compressor means to said heater and from the latter to said first conduit means.
Claim 11
Dependent Claim
62 words
A device according to claim 7, in which said first conduit means comprises a plurality of pipes for conveying inert gas into said gas receiving space, and in which said collector means includes a channel having at least one side wall overlapping the respective adjacent partition means while ending at a higher level than the lower end of said first conduit means.
Claim 12
Dependent Claim
30 words
A device according to claim 7, in which saiD first conduit means include immersion tubes arranged in rows substantially parallel to and near the side walls of said container means.
Claim 13
Dependent Claim
43 words
A device according to claim 10, in which said partition means includes a wall provided between the lower portion of said immersion tubes and that one wall of said channel of said collector means which faces toward the interior of said container means.
Claim 14
Dependent Claim
39 words
A device according to claim 11, in which said wall of said partition means ends above the lower edge of said one wall of said channel of said collector means which faces toward the interior of said container means.
Claim 15
Dependent Claim
20 words
A device according to claim 11, in which the lower portion of said partition means is an upright supporting grate.
Claim 16
Dependent Claim
20 words
A device according to claim 7, in which said partition means is spaced from the bottom of said container means.
Claim 17
Dependent Claim
22 words
A device according to claim 7, which includes separator means arranged on opposite container sides and communicating with said first conduit means.
Claim 18
Dependent Claim
46 words
A device according to claim 7, which includes conveying means interconnecting said collector means and said compressor means for conveying an inert gas therethrough, and a gas-tight treatment chamber arranged in said conveying means between said collector means and said compressor means for treating an article.
Claim 19
Dependent Claim
38 words
A device according to claim 8, which includes conveying means interconnecting said collector means and said air preheater, for conveying an inert gas therethrough and a gas-tight treatment chamber interposed in said conveying means for treating an article.
Claim 20
Dependent Claim
50 words
A device according to claim 7, in which said gas receiving space means include deviating cylinder means having a bottom and being open at the top and respectively surrounding the lower portions of said first conduit means in spaced relationship thereto, the open end of said cylinder means pointing upwardly.
Claim 21
Dependent Claim
40 words
A device according to claim 18, in which said collector means include hood means arranged above and in spaced relationship to the open end of said cylinder means, and also include gas withdrawing pipe means extending into said hood means.
Claim 22
Dependent Claim
37 words
A device according to claim 19, in which said cylinder means and said first conduit means and said hood means together form a plurality of substantially coaxially arranged structural units arranged on opposite sides of said container.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |