Patent US3913898A successfully refreshed from Google Patents.
US3913898A
Expired / Lapsed
US
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Steel producing plant with one or several electric arc furnaces
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1974-03-20
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Granted: 1975-10-21
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Expires: 1994-03-20
Abstract
Abstract A multi-bay steel producing plant that has one or more electric arc furnaces arranged on a floor and surrounded by a closed cell. The cell has a portion of its wall that is movable to allow for access to the furnace, and is made of sound-absorbing materials to deaden the loud noises emanating from the furnace. An exhaust fan and pipe are provided in the cell to rid the interior of the cell of exhaust gases. A transfer vehicle for transporting the ladle containing the steel charge is movable on tracks located below the cell and a taphole of the furnace.
Inventors
- 👤 Gunter Wolters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:17
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/52; C21C5/5294; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
Multi-bay steel producing plant with at least one electric arc furnace mounted on a floor comprising a closed cell surrounding said at least one arc furnace, said closed cell comprising a wall structure consisting of sound-absorbing materials and exhaust means for exhausting the flue gases contained in said cell, a charging crane located above said closed cell, said wall structure of said closed cell comprising a vertical wall and an upper cover in the area of said charging crane, means for movably supporting said vertical wall and said upper cover to allow access to said at least one arc furnace while said furnace is enclosed in said cell and to allow the charging of the furnace, a transfer vehicle for transferring the steel contained in a ladle to a subsequent processing station, and track means for allowing the transfer vehicle to move laterally of said cell from a position directly under a taphole in said furnace to the subsequent processing station.
Claim 2
Dependent Claim
161 words
Multi-bay steel producing plant with at least one electric arc furnace mounted on a floor comprising a closed cell surrounding said at least one arc furnace, said closed cell comprising a wall structure consisting of sound-absorbing materials and exhaust means for exhausting the flue gases contained in said cell, a charging crane located above said closed cell, said wall structure of said closed cell comprising a vertical wall and an upper cover in the area of said charging crane, means for movably supporting said vertical wall and said upper cover to allow access to said at least one arc furnace while said furnace is enclosed in said cell and to allow the charging of the furnace, a transfer vehicle for transferring the steel contained in a ladle to a subsequent processing station, and track means for allowing the transfer vehicle to move laterally of said cell from a position directly under a taphole in said furnace to the subsequent processing station.
Claim 3
Dependent Claim
62 words
The multi-bay steel producing plant according to claim 1, wherein said wall structure comprises a stationary portion, said means for movably support said vertical wall and said upper cover comprising roller means that permit said vertical wall and upper cover to move relative to said stationary portion, and packing means for sealing said movable means from said stationary portion and the floor.
Claim 4
Dependent Claim
58 words
The multi-bay steel producing plant according to claim 1, further comprising a raw material supply house arranged directly next to the closed cell, said wall structure of said closed cell comprising a stationary portion and locks formed in said stationary portion for effecting the transfer of the raw material from said supply house to said electric arc 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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |