US3814402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for collecting gases from a converter
Assignee: Creusot Loire SA
•
Filing: 1973-07-09
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Granted: 1974-06-04
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Expires: 1993-07-09
Abstract
Abstract A device for collecting gases from the spout of a converter for use in a dust-collecting installation comprises a hood for connection to the dust-collecting installation, a skirt connected in fluid-tight manner to the hood and mounted to be stationary in use of the converter, a canopy surrounding with clearance the converter spout, connected to the skirt in fluid-tight manner, supported in a cut-away in a platform at the level of the converter spout and provided with a cut-away with a vertical plane normal to that including the converter trunnions, a shutter for closing the cut-away in the canopy, movable vertically relative thereto and connected to the skirt in fluid-tight manner, and pressure control means for maintaining the pressure within the skirt substantially equal to that externally of the skirt.
Inventors
- 👤 A Maubon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:33
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
215 words
A device for collecting gases from a converter comprising: 1. a hood adapted for connection to a dust-extraction installation; 2. a skirt adapted for surmounting the spout of the converter to be stationary during operation of the converter; 3. means coupling said skirt to said hood in a gas-tight manner; 4. platform means adapted to be located at the level of the spout of the converter and defining an opening which will, in use, be in register with the spout of the converter; 5. a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which will, in use, be located to one side of the vertical plane including the horizontal axis of tilting of the converter, said canopy being shaped so as in use to leave clearance between it and the converter; 6. means coupling said canopy to said skirt in a gas-tight manner; 7. a shutter mounted in the cut-away in said canopy; 8. means for moving said shutter to open and close said cut-away in said canopy; 9. means coupling said shutter to said skirt in a gas-tight manner; and 10. means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
Claim 2
Independent Claim
215 words
A device for collecting gases from a converter comprising: 1. a hood adapted for connection to a dust-extraction installation; 2. a skirt adapted for surmounting the spout of the converter to be stationary during operation of the converter; 3. means coupling said skirt to said hood in a gas-tight manner; 4. platform means adapted to be located at the level of the spout of the converter and defining an opening which will, in use, be in register with the spout of the converter; 5. a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which will, in use, be located to one side of the vertical plane including the horizontal axis of tilting of the converter, said canopy being shaped so as in use to leave clearance between it and the converter; 6. means coupling said canopy to said skirt in a gas-tight manner; 7. a shutter mounted in the cut-away in said canopy; 8. means for moving said shutter to open and close said cut-away in said canopy; 9. means coupling said shutter to said skirt in a gas-tight manner; and 10. means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
Claim 3
Dependent Claim
18 words
a skirt adapted for surmounting the spout of the converter to be stationary during operation of the converter;
Claim 4
Dependent Claim
18 words
a skirt adapted for surmounting the spout of the converter to be stationary during operation of the converter;
Claim 5
Dependent Claim
24 words
A device according to claim 1 wherein said opening in said platforms means includes a cut-away in register with said cut-away in said canopy.
Claim 6
Independent Claim
204 words
a device for collecting gases from the spout of the converter and comprising: a. a hood adapted for connection to a dust-extraction installation; b. a skirt surmounting the spout of the converter to be stationary during operation of said converter; c. means coupling said skirt to said hood in a gas-tight manner; d. platform means located at the level of said spout of said converter and defining an opening in register with said spout of said converter; e. a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which is located to one side of the vertical plane including the horizontal axis of tilting of said converter, said canopy being shaped so as to leave clearance between it and said converter; f. means coupling said canopy to said skirt in a gas-tight manner; g. a shutter mounted in the cut-away in said canopy; h. means for moving said shutter to open and close said cut-away in said canopy; i. means coupling said shutter to said skirt in a gas-tight manner; and j. means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
Claim 7
Independent Claim
204 words
a device for collecting gases from the spout of the converter and comprising: a. a hood adapted for connection to a dust-extraction installation; b. a skirt surmounting the spout of the converter to be stationary during operation of said converter; c. means coupling said skirt to said hood in a gas-tight manner; d. platform means located at the level of said spout of said converter and defining an opening in register with said spout of said converter; e. a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which is located to one side of the vertical plane including the horizontal axis of tilting of said converter, said canopy being shaped so as to leave clearance between it and said converter; f. means coupling said canopy to said skirt in a gas-tight manner; g. a shutter mounted in the cut-away in said canopy; h. means for moving said shutter to open and close said cut-away in said canopy; i. means coupling said shutter to said skirt in a gas-tight manner; and j. means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
Claim 8
Dependent Claim
11 words
means coupling said skirt to said hood in a gas-tight manner;
Claim 9
Dependent Claim
11 words
means coupling said skirt to said hood in a gas-tight manner;
Claim 10
Dependent Claim
26 words
A device according to claim 1 including means for coupling said shutter to said canopy in a fluid-tight manner, said coupling means permitting relative movement therebetween.
Claim 11
Dependent Claim
48 words
A device according to claim 1 wherein said means coupling said shutter and said skirt include plate means mounted on to one of said shutter and said skirt, and a liquid bath into which said plate means extends mounted on the other of said shutter and said skirt.
Claim 12
Dependent Claim
32 words
platform means adapted to be located at the level of the spout of the converter and defining an opening which will, in use, be in register with the spout of the converter;
Claim 13
Dependent Claim
32 words
platform means adapted to be located at the level of the spout of the converter and defining an opening which will, in use, be in register with the spout of the converter;
Claim 14
Dependent Claim
63 words
a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which will, in use, be located to one side of the vertical plane including the horizontal axis of tilting of the converter, said canopy being shaped so as in use to leave clearance between it and the converter;
Claim 15
Dependent Claim
63 words
a flame resistant canopy in register with said opening in said platform and coaxial with said skirt, said canopy being cut away on that side which will, in use, be located to one side of the vertical plane including the horizontal axis of tilting of the converter, said canopy being shaped so as in use to leave clearance between it and the converter;
Claim 16
Dependent Claim
4 words
A converter installation comprising:
Claim 17
Dependent Claim
4 words
A converter installation comprising:
Claim 18
Dependent Claim
11 words
means coupling said canopy to said skirt in a gas-tight manner;
Claim 19
Dependent Claim
11 words
means coupling said canopy to said skirt in a gas-tight manner;
Claim 20
Dependent Claim
9 words
a shutter mounted in the cut-away in said canopy;
Claim 21
Dependent Claim
9 words
a shutter mounted in the cut-away in said canopy;
Claim 22
Dependent Claim
14 words
means for moving said shutter to open and close said cut-away in said canopy;
Claim 23
Dependent Claim
14 words
means for moving said shutter to open and close said cut-away in said canopy;
Claim 24
Dependent Claim
12 words
means coupling said shutter to said skirt in a gas-tight manner; and
Claim 25
Dependent Claim
12 words
means coupling said shutter to said skirt in a gas-tight manner; and
Claim 26
Dependent Claim
17 words
means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
Claim 27
Dependent Claim
17 words
means for controlling the pressure within said skirt in dependence on the pressure externally of said skirt.
References Cited (Backward Citations)
US1417588A
Cited
US3215425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |