Patent US4549200A successfully refreshed from Google Patents.
US4097340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning coke oven doors
Assignee: Dr C Otto and Co GmbH
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Filing: 1977-08-24
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Granted: 1978-06-27
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Expires: 1997-08-24
Abstract
Abstract Apparatus for cleaning incrusted deposits from the regions of coke oven doors between a central refractory sealing plug and a surrounding sealing edge or strip with the use of two pairs of nozzles carried on the upper and lower ends of a frame which can traverse the inner end of the door on which the sealing plug is carried. The frame has a length preferably one-half the height of the door such that the upper nozzles will clean the upper half of the door while the lower nozzles clean the lower half. The nozzles are pivotally carried on the frame such that they can be actuated to clean the horizontally-extending portions of the door between the sealing plug and the sealing strip at the upper and lower extremities of the door.
Inventors
- 👤 Erich Pries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:40
CPC Classifications
C; C10; C10B; C10B43/00; C10B43/02; C10B43/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
219 words
Apparatus for cleaning the regions of coke oven doors between a surrounding sealing edge and a refractory door plug, comprising a frame vertically reciprocable along the end of a coke oven door which carries said sealing plug, a first pair of nozzles carried on the upper portion of said frame and arranged to force fluid into the upper portions of those regions of the coke oven door between a surrounding sealing edge and the door plug, and a second pair of nozzles carried on the lower portion of said frame and arranged to force fluid into the lower portions of those regions of the coke oven door between said surrounding sealing edge and the door plug, said nozzles being pivotal about generally vertical axes such that the first pair of nozzles can be pivoted inwardly when they reach the upper edge of the coke oven door upon upward movement of the frame to clean the region between the upper edge of the door plug and the upper horizontally-extending portion of the sealing edge, the second pair of nozzles being pivotal inwardly when they reach the lower edge of the coke oven door upon downward movement of the frame to clean the region between the lower edge of the door plug and the lower horizontally-extending portion of the sealing edge.
Claim 2
Dependent Claim
219 words
Apparatus for cleaning the regions of coke oven doors between a surrounding sealing edge and a refractory door plug, comprising a frame vertically reciprocable along the end of a coke oven door which carries said sealing plug, a first pair of nozzles carried on the upper portion of said frame and arranged to force fluid into the upper portions of those regions of the coke oven door between a surrounding sealing edge and the door plug, and a second pair of nozzles carried on the lower portion of said frame and arranged to force fluid into the lower portions of those regions of the coke oven door between said surrounding sealing edge and the door plug, said nozzles being pivotal about generally vertical axes such that the first pair of nozzles can be pivoted inwardly when they reach the upper edge of the coke oven door upon upward movement of the frame to clean the region between the upper edge of the door plug and the upper horizontally-extending portion of the sealing edge, the second pair of nozzles being pivotal inwardly when they reach the lower edge of the coke oven door upon downward movement of the frame to clean the region between the lower edge of the door plug and the lower horizontally-extending portion of the sealing edge.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein said frame is provided with rollers which ride on track rails mounted on a vertical support column.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 including a thermally-insulated protective shield which surrounds the refractory door plug and is mounted on said frame.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1 wherein said frame is caused to reciprocate by means of a hydraulic cylinder.
Claim 6
Dependent Claim
14 words
The apparatus of claim 1 including individual control valves for each of said nozzles.
References Cited (Backward Citations)
US3892250A
Cited
US3847753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |