US3598258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for charging shaft-type furnaces
Assignee: Huettenwerk Oberhausen AG
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Filing: 1969-07-08
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Granted: 1971-08-10
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Expires: 1989-07-08
Abstract
Abstract An apparatus for the charging and sealing of shaft-type furnaces in which a pair of sliding-plate gas locks are provided above and below a roof-shaped distributor in the charging housing. The distributor coacts with a pair of swingable flaps to prevent free flow of the charge, the flaps being simultaneously swung in opposite senses to open chutes for the charge into the furnace when the lower gate is open.
Inventors
- 👤 Rudolf Grewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:43
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; C21B7/20; F; F27; F27B; F27B1/00; F27B1/10; F27B1/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
194 words
An apparatus for charging a shaft-type furnace, comprising: a horizontally elongated housing surmounting said furnace; an upper and a lower gate along upper and lower portions of said housing and alternately operable to permit communication between said housing and said furnace and between the exterior and said housing; an upwardly converging roof-type distributor disposed in said housing in the path of a charge introduced into said upper portion of said housing, said distributor spanning said housing in the longitudinal direction along a vertical median plane through said housing; and a pair of swingable flaps mounted in said housing below said distributor and extending parallel to said distributor for temporarily retaining the charge in said housing, but swingable into an open position in which said flaps are downwardly convergent to permit passage of the charge into said furnace through said lower portion of said housing, said lower gate including a horizontal frame surrounding an opening immediately below the path of said flaps, and a plate horizontally shiftable in said frame across said opening, said housing having a pair of downwardly convergent walls reaching beneath the path of the flaps and terminating slightly above said plate.
Claim 2
Independent Claim
194 words
An apparatus for charging a shaft-type furnace, comprising: a horizontally elongated housing surmounting said furnace; an upper and a lower gate along upper and lower portions of said housing and alternately operable to permit communication between said housing and said furnace and between the exterior and said housing; an upwardly converging roof-type distributor disposed in said housing in the path of a charge introduced into said upper portion of said housing, said distributor spanning said housing in the longitudinal direction along a vertical median plane through said housing; and a pair of swingable flaps mounted in said housing below said distributor and extending parallel to said distributor for temporarily retaining the charge in said housing, but swingable into an open position in which said flaps are downwardly convergent to permit passage of the charge into said furnace through said lower portion of said housing, said lower gate including a horizontal frame surrounding an opening immediately below the path of said flaps, and a plate horizontally shiftable in said frame across said opening, said housing having a pair of downwardly convergent walls reaching beneath the path of the flaps and terminating slightly above said plate.
Claim 3
Dependent Claim
62 words
The apparatus defined in claim 1, further comprising a Pair of mutually parallel shafts extending in the longitudinal direction in said housing and journaled thereon within the outlines of said distributor and rigidly carrying said flaps, means for coupling said shafts for joint rotation in opposite senses and actuating means for rotating at least one of said shafts relative to said housing.
Claim 4
Dependent Claim
43 words
The apparatus defined in claim 2 wherein said flaps extend outwardly beyond said distributor in a ''''closed'''' position thereof, said housing having symmetrically downwardly converging walls cooperating with said flaps for retaining the charge temporarily thereon in the closed position of said flaps.
Claim 5
Independent Claim
269 words
An apparatus for charging a shaft-type furnace, comprising: a horizontally elongated housing surmounting said furnace; an upper and a lower gate along upper and lower portions of said housing and alternately operable to permit communication between said housing and said furnace and between the exterior and said housing; an upwardly converging roof-type distributor disposed in said housing in the path of a charge introduced into said upper portion of said housing, said distributor spanning said housing in the longitudinal direction along a vertical median plane through said housing; a pair of swingable flaps mounted in said housing below said distributor and extending parallel to said distributor for temporarily retaining the charge in said housing but swingable into an open position to permit passage of the charge into said furnace through said lower portion of said housing, a pair of mutually parallel shafts extending in the longitudinal direction in said housing and journaled thereon within the outlines of said distributor and rigidly carrying said flaps; means for coupling said shafts for joint rotation in opposite senses; and actuating means for rotating at least one of said shafts relative to said housing, said flaps extending outwardly beyond said distributor in a ''''closed'''' position thereof, said housing having symmetrically downwardly converging walls cooperating with said flaps for retaining the charge temporarily thereon in the closed position of said flaps, said distributor comprising a pair of downwardly diverging generally flat flanks joined in a peak lying along said median plane, and a pair of aprons integral with said flanks and surrounding said shafts, said aprons substantially abutting said flaps in said closed position.
Claim 6
Independent Claim
269 words
An apparatus for charging a shaft-type furnace, comprising: a horizontally elongated housing surmounting said furnace; an upper and a lower gate along upper and lower portions of said housing and alternately operable to permit communication between said housing and said furnace and between the exterior and said housing; an upwardly converging roof-type distributor disposed in said housing in the path of a charge introduced into said upper portion of said housing, said distributor spanning said housing in the longitudinal direction along a vertical median plane through said housing; a pair of swingable flaps mounted in said housing below said distributor and extending parallel to said distributor for temporarily retaining the charge in said housing but swingable into an open position to permit passage of the charge into said furnace through said lower portion of said housing, a pair of mutually parallel shafts extending in the longitudinal direction in said housing and journaled thereon within the outlines of said distributor and rigidly carrying said flaps; means for coupling said shafts for joint rotation in opposite senses; and actuating means for rotating at least one of said shafts relative to said housing, said flaps extending outwardly beyond said distributor in a ''''closed'''' position thereof, said housing having symmetrically downwardly converging walls cooperating with said flaps for retaining the charge temporarily thereon in the closed position of said flaps, said distributor comprising a pair of downwardly diverging generally flat flanks joined in a peak lying along said median plane, and a pair of aprons integral with said flanks and surrounding said shafts, said aprons substantially abutting said flaps in said closed position.
Claim 7
Dependent Claim
39 words
The apparatus defined in claim 4, further comprising charge feed means above said upper portion of said housing and said upper gate and shiftable in the longitudinal direction parallel to said distributor, for depositing said charge in said housing.
Claim 8
Dependent Claim
41 words
The apparatus defined in claim 4, further comprising abutment means along said walls engageable with free ends of said flaps in said closed position, said flaps abutting one another in said open position, said flaps extending generally radially from said shafts.
Claim 9
Dependent Claim
58 words
The apparatus defined in claim 6 wherein said upper and lower gates each include a frame aligned with the respective opening of said housing and formed with a pair of confronting guides channels, a closure plate slidably received in said frame and guided in said channels, and alternately operable fluid-responsive cylinders connected with said plates for actuating same.
Claim 10
Dependent Claim
25 words
The apparatus defined in claim 7 wherein each of said frames is formed with a chamber receiving the respective plate in a retracted position thereof.
Claim 11
Dependent Claim
33 words
The apparatus defined in claim 8, further comprising conveyor means above said upper gate for delivering metallurgical pellets to said bucket through said upper gate in a retracted position of the corresponding plate.
References Cited (Backward Citations)
US2614708A
Cited
US3511390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |