US4360305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distribution apparatus for throat closures of shaft furnaces, in particular for blast furnace closures
Assignee: Mannesmann Demag AG
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Filing: 1980-07-03
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Granted: 1982-11-23
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Expires: 2000-07-03
Abstract
Abstract The invention relates to a distribution apparatus for throat closures of shaft furnaces, in particular blast-furnace closures, with a lock chamber arranged within the furnace dome, at the entrance of which is arranged a funnel tube and underneath which, opening out above the charging surface is arranged a distribution pipe which may be swung around the pivot axis by means of a horizontal pair of swivel pins, within a frame, whereby the frame is arranged by means of a hollow shaft or a shaft pin normal to the pivot axis, also extending horizontally and penetrating the furnace dome to which it is sealed and connected to a swing drive, and the pivot drive for the distribution pipe is connected to a drive shaft penetrating the hollow shaft and connected with a pin of the swivel-pin pair.
Inventors
- 👤 Georg Dorsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:04
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; C21B7/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
205 words
A distribution apparatus for the top closures of shaft furnaces having furnace domes comprising: (a) a funnel tube arranged at the entrance of said furnace dome; (b) a distribution pipe extending below said funnel tube and capable of selectively directing charge material to a charging surface; (c) said distribution pipe being pivotally supported by a pair of horizontal swivel pins to thereby enable said distribution pipe to swing about a horizontal axis passing through said swivel pins; (d) a frame element supporting said swivel pins; (e) said frame element being supported by a hollow shaft extending perpendicular to the horizontal axis passing through said swivel pins; (f) said hollow shaft passing through said furnace dome; (g) a swing drive connected to said hollow shaft for selectively rotating said distribution pipe about the axis passing through said hollow shaft; (h) a pivot drive passing through said hollow shaft; (i) said pivot drive having a first vertical drive disc; (j) a second vertical drive disc connected to one pin of said pair of swivel pins; and (k) power transmission elements serving to couple said first and second drive discs so that rotation of said pivot drive causes said distribution pipe to swivel about said horizontal swivel pins.
Claim 2
Dependent Claim
205 words
A distribution apparatus for the top closures of shaft furnaces having furnace domes comprising: (a) a funnel tube arranged at the entrance of said furnace dome; (b) a distribution pipe extending below said funnel tube and capable of selectively directing charge material to a charging surface; (c) said distribution pipe being pivotally supported by a pair of horizontal swivel pins to thereby enable said distribution pipe to swing about a horizontal axis passing through said swivel pins; (d) a frame element supporting said swivel pins; (e) said frame element being supported by a hollow shaft extending perpendicular to the horizontal axis passing through said swivel pins; (f) said hollow shaft passing through said furnace dome; (g) a swing drive connected to said hollow shaft for selectively rotating said distribution pipe about the axis passing through said hollow shaft; (h) a pivot drive passing through said hollow shaft; (i) said pivot drive having a first vertical drive disc; (j) a second vertical drive disc connected to one pin of said pair of swivel pins; and (k) power transmission elements serving to couple said first and second drive discs so that rotation of said pivot drive causes said distribution pipe to swivel about said horizontal swivel pins.
Claim 3
Dependent Claim
45 words
A distribution apparatus as claimed in claim 1 wherein: (a) said first and second drive discs have peripheral areas which extend below one half of the angle formed by the axis of the hollow shaft and said one pin of said pair of swivel pins.
Claim 4
Dependent Claim
14 words
A distribution apparatus as claimed in claim 2 wherein: (a) said angle is 90°.
Claim 5
Dependent Claim
19 words
A distribution apparatus as claimed in claim 2 wherein: (a) said first and second drive discs are circularly shaped.
Claim 6
Dependent Claim
19 words
A distribution apparatus as claimed in claim 2 wherein: (a) said first and second drive discs are segmentally shaped.
Claim 7
Dependent Claim
16 words
A distribution apparatus as claimed in claim 1 wherein: (a) said power transmission elements are cables.
Claim 8
Dependent Claim
35 words
A distribution apparatus as claimed in claim 1 wherein: (a) said drive discs are provided with cable grooves such that the angled peripheral areas between said cable grooves can be rolled on to each other.
Claim 9
Dependent Claim
66 words
A distribution apparatus as claimed in claim 7 wherein: (a) a cable is provided in each groove of said drive discs, said cable extending in mirror reflection relative to the center plane of said drive discs and across opposite peripheral areas of said drive discs; (b) said cables having one of their ends fixed to each drive disc; and (c) said cables are maintained under tension.
References Cited (Backward Citations)
US4032024A
Cited
US4243351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |