Patent US3559970A successfully refreshed from Google Patents.
US3559970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the gas pressure from a converter
Assignee: Kawasaki Heavy Industries Ltd
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Filing: 1968-05-03
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Granted: 1971-02-02
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Expires: 1988-05-03
Abstract
Abstract A system for controlling the pressure of the gas generated from a converter in noncombustion state and collected in a hood with atmospheric air being excluded from the hood including cooling and dust removing means for the gas before the gas is stored. The pressure of the gas within the hood is detected as one signal factor, said detected signal factor being applied to an adjusting instrument so as to actuate a mechanism in said system for controlling the pressure of the gas by opening and closing a damper located in a duct leading from the hood. The system further includes a mechanism for delaying the time the damper in said duct is opened or closed by applying a signal factor other than said signal factor derived from the pressure of the gas in said hood to said adjusting instrument.
Inventors
- 👤 Ichizo Hamabe
- 👤 Motoaki Hirao
- 👤 Gunji Kagamiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:47
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
In a system for controlling the pressure of gas generated from a converter comprising: a. a gas collecting device having a hood for collecting gas discharged from said converter in a noncombustion state; b. a duct for drawing gas from said hood; c. a damper in said duct for regulating gas flow from said hood; d. cooling and filtering means for treating said gas drawn through said duct; e. means preventing atmospheric air from entering said hood so that only said gas generated from said converter can be effectively collected in said hood; f. means for generating a first signal responsive to the pressure of said gas within said hood; and g. means responsive to said first signal for controlling the pressure of said gas in said hood including an adjusting instrument for opening and closing said damper; the improvement comprising: means for generating a second signal responsive to charging of the subsidiary raw materials into the converter, and means for applying said signal to said adjusting instrument before said first signal to hasten opening and closing of said damper.
Claim 2
Dependent Claim
50 words
In a system for controlling the pressure of gas generated from a converter according to claim 1, the improvement further comprising means for generating a third signal responsive to the temperature of said gas in a stagnating layer of said hood, said third signal being applied to said adjusting instrument.
Claim 3
Dependent Claim
50 words
In a system for controlling the pressure of gas generated from a converter according to claim 2, the improvement further comprising means for generating a third signal responsive to the temperature of said gas in a stagnating layer of said hood, said third signal being applied to said adjusting instrument.
Claim 4
Dependent Claim
47 words
In a system for controlling the pressure of gas generated from a converter according to claim 1, the improvement comprising means for generating a third signal responsive to charging of subsidiary raw materials into said converter, and means for applying said third signal to said adjusting instrument.
Claim 5
Dependent Claim
40 words
The system as claimed in claim 5, further comprising: means for generating a signal responsive to the temperature of said gas in a stagnating layer of said hood and means for applying said temperature responsive signal to said adjusting instrument.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |