US3682339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free fall charging apparatus for a coking furnace
Assignee: Carl Still GmbH and Co KG
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Filing: 1970-07-21
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Granted: 1972-08-08
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Expires: 1990-07-21
Abstract
Abstract A coking furnace charging hopper includes a lower discharge which is connected to a transfer funnel leading to the furnace head, and a valve member is pivotally mounted in the funnel for movement between an axially extending fully opened position to a transversely extending closed position. The hopper includes a coal inflow gauge or device for measuring the inflow rate of the charging coal which is connected to a control for regulating the valve between its fully opened and fully closed position in order to maintain the volume or weight reduction of the coal in the hopper constant per unit of time.
Inventors
- 👤 Johannes Knappstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
C; C10; C10B; C10B31/00; C10B31/02; C10B31/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A free fall charging apparatus for coking furnaces comprising a charging hopper having a lower furnace discharge connected through a narrowed lower portion leading to the furnace, a flow valve pivotally mounted in said narrowed lower portion and being pivotable between an axially extending fully open position to a transversely extending closed position, and pressure responsive means associated with said hopper and connected to said valve and being responsible to changes of the amount of coal moving through said hopper to regulate said valve after it has been initially opened betweEn fully and partly opened and closed positions in accordance with the amount of coal moving through said hopper to maintain coal reduction constant.
Claim 2
Dependent Claim
114 words
A free fall charging apparatus for coking furnaces comprising a charging hopper having a lower furnace discharge connected through a narrowed lower portion leading to the furnace, a flow valve pivotally mounted in said narrowed lower portion and being pivotable between an axially extending fully open position to a transversely extending closed position, and pressure responsive means associated with said hopper and connected to said valve and being responsible to changes of the amount of coal moving through said hopper to regulate said valve after it has been initially opened betweEn fully and partly opened and closed positions in accordance with the amount of coal moving through said hopper to maintain coal reduction constant.
Claim 3
Dependent Claim
57 words
A device, according to claim 1, wherein said pressure responsive means includes a measuring ring at the entrance of said hopper through which the charged material is directed, a coal gauge mounted in said measuring ring and having a weight depending therefrom extending through said hopper, and control means connected to said gauge for regulating said valve.
Claim 4
Dependent Claim
57 words
A device, according to claim 2, wherein said control means includes an electrically operated solenoid valve, fluid pressure means connected to said flow valve for shifting said valve between opened and closed positions and fluid pressure supply means associated with said solenoid valve for controlling the operation of said fluid pressure means for controlling said flow valve.
Claim 5
Dependent Claim
42 words
A device, according to claim 1, wherein said pressure responsive means includes a fluid pressure member, said hopper being supported on said fluid pressure member and said fluid pressure member being pressurized in accordance with the weight of the hopper bearing thereon.
Claim 6
Dependent Claim
84 words
A device, according to claim 1, including a fluid pressure flow valve operating cylinder, a piston slidable in said cylinder and connected to said flow valve to move said flow valve between opened and closed positions, means for supplying fluid under pressure to a selected side of said cylinder for moving said piston, and wherein said pressure responsive means includes an electrical control system responsive to the amount of coal passing through said hopper for regulating said fluid supply to said fluid pressure cylinder.
Claim 7
Dependent Claim
22 words
A device, according to claim 5, wherein said control system includes a coal gauge with a weight portion extending through said hopper.
Claim 8
Dependent Claim
38 words
A device, according to claim 5, wherein said control system includes a fluid pressure member, said hopper being supported on said fluid pressure member and influencing the pressure therein in accordance with the amount of coal passing therethrough.
Claim 9
Dependent Claim
13 words
A device, according to claim 1, wherein said valve comprises a vertical flap.
Claim 10
Dependent Claim
92 words
Free-fall charging apparatus for coking furnaces comprising a hopper with a bottom outlet, a closing element adjacent said bottom outlet, secured on said hopper, a capacitative coal gauge arranged in said hopper, which is connected with said closing element, a control device arranged between said closing element and said coal gauge for opening and closing said closing element to keep the volume or weight reduction of the coal in the hopper constant per unit of time, after opening of the closing element, by influencing the degree of opening of the closing element.
Claim 11
Dependent Claim
92 words
Free-fall charging apparatus for coking furnaces comprising a hopper with a bottom outlet, a closing element adjacent said bottom outlet, secured on said hopper, a capacitative coal gauge arranged in said hopper, which is connected with said closing element, a control device arranged between said closing element and said coal gauge for opening and closing said closing element to keep the volume or weight reduction of the coal in the hopper constant per unit of time, after opening of the closing element, by influencing the degree of opening of the closing element.
Claim 12
Dependent Claim
15 words
Apparatus according to claim 9, characterized in that the closing element is a vertical flap.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |