Patent US4740271A successfully refreshed from Google Patents.
US4740271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke oven doors for horizontal-chamber coke ovens
Assignee: RAG AG
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Filing: 1986-09-30
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Granted: 1988-04-26
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Expires: 2006-09-30
Abstract
Abstract This invention is directed to an extremely lightweight construction for coke oven doors with simultaneous optimal sealing, by assuring that the oven door comprises one sealing unit and the closing forces act simultaneously on the seal, thereby avoiding heat loss between the two units as much as possible.
Inventors
- 👤 Wolfgang Becker
- 👤 Heinz Tewes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:47
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/04; C10B25/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
327 words
A coke oven door in combination with a horizontal chamber coking oven, said oven having a door opening within a coking chamber, said oven having a door frame about said door opening for receiving said oven door, and an oven chamber for receiving an oven filling, said oven door having a door stopper adjacent thereto to serve as a heat barrier; said oven door having a closed position and an open position; said oven door comprising a separate force transmittal unit and a separate sealing unit, said sealing unit having a sealing element, which sealing element, in said closed position of said oven door, is kept against said door frame by said force transmittal unit; joint means connecting said force transmittal unit and said sealing unit; said force transmittal unit being movably disposable to keep said sealing unit in a closed position by holding said sealing unit element against said door frame; said force transmittal unit comprising a framework of elongated closed hollow members having elongated closed hollow spaces therewithin, said elongated hollow members comprising two substantially vertical members, said framework having a shape substantially similar to said door frame with said two vertical members being adjacent and outside vertical portions of said door frame in said closed position; a locking unit for locking said force transmittal unit into said closed position; said framework having means for exerting force against said sealing unit, said sealing unit for being disposed between said door frame of said coke oven and said framework in the closed position with said locking unit exerting force against said framework, said force exerting means in said closed position then being disposed to exert force against said sealing unit; said framework comprising additional lateral members connecting said two substantially vertical members; said closed, hollow, vertical members having openings at their top and bottom ends for permitting heated air from said hollow members to exit from said openings in said top ends of said vertical members.
Claim 2
Dependent Claim
327 words
A coke oven door in combination with a horizontal chamber coking oven, said oven having a door opening within a coking chamber, said oven having a door frame about said door opening for receiving said oven door, and an oven chamber for receiving an oven filling, said oven door having a door stopper adjacent thereto to serve as a heat barrier; said oven door having a closed position and an open position; said oven door comprising a separate force transmittal unit and a separate sealing unit, said sealing unit having a sealing element, which sealing element, in said closed position of said oven door, is kept against said door frame by said force transmittal unit; joint means connecting said force transmittal unit and said sealing unit; said force transmittal unit being movably disposable to keep said sealing unit in a closed position by holding said sealing unit element against said door frame; said force transmittal unit comprising a framework of elongated closed hollow members having elongated closed hollow spaces therewithin, said elongated hollow members comprising two substantially vertical members, said framework having a shape substantially similar to said door frame with said two vertical members being adjacent and outside vertical portions of said door frame in said closed position; a locking unit for locking said force transmittal unit into said closed position; said framework having means for exerting force against said sealing unit, said sealing unit for being disposed between said door frame of said coke oven and said framework in the closed position with said locking unit exerting force against said framework, said force exerting means in said closed position then being disposed to exert force against said sealing unit; said framework comprising additional lateral members connecting said two substantially vertical members; said closed, hollow, vertical members having openings at their top and bottom ends for permitting heated air from said hollow members to exit from said openings in said top ends of said vertical members.
Claim 3
Dependent Claim
23 words
The coke oven door according to claim 1 wherein the vertical members are provided with openings where they meet with the lateral members.
Claim 4
Dependent Claim
24 words
The coke oven door according to claim 1, wherein said vertical and lateral members have a number of pressure bolts arranged at equal intervals.
Claim 5
Dependent Claim
18 words
The coke oven door according to claim 3 wherein said pressure bolts are bolts having springs positioned therearound.
Claim 6
Dependent Claim
26 words
The coke oven door according to claim 1 wherein said hollow framework comprises a boxed structure having a cross section with a width and a depth.
Claim 7
Dependent Claim
26 words
The coke oven door according to claim 2 wherein said hollow framework comprises a boxed structure having a cross section with a width and a depth.
Claim 8
Dependent Claim
27 words
The coke oven door according to claim 5 wherein said hollow boxed structure has walls which are thin as compared to either said width or said depth.
Claim 9
Dependent Claim
41 words
The coke oven door according to claim 1 wherein said lateral members having hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 10
Dependent Claim
26 words
The coke oven door according to claim 3 wherein said hollow framework comprises a boxed structure having a cross section with a width and a depth.
Claim 11
Dependent Claim
26 words
The coke oven door according to claim 4 wherein said hollow framework comprises a boxed structure having a cross section with a width and a depth.
Claim 12
Dependent Claim
27 words
The coke oven door according to claim 9 wherein said hollow boxed structure has walls which are thin as compared to either said width or said depth.
Claim 13
Dependent Claim
27 words
The coke oven door according to claim 10 wherein said hollow boxed structure has walls which are thin as compared to either said width or said depth.
Claim 14
Dependent Claim
41 words
The coke oven door according to claim 2 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 15
Dependent Claim
41 words
The coke oven door according to claim 3 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 16
Dependent Claim
41 words
The coke oven door according to claim 4 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 17
Dependent Claim
41 words
The coke oven door according to claim 5 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 18
Dependent Claim
41 words
The coke oven door according to claim 6 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 19
Dependent Claim
41 words
The coke oven door according to claim 7 wherein said lateral members have hollow spaces therein and said hollow spaces of said vertical and lateral hollow members are joined together to form a continuous hollow space extending around said door frame.
Claim 20
Dependent Claim
35 words
The coke oven door according to claim 7 wherein said walls of said hollow boxed structure are about 4 millimeters thick, and said width and said depth are about 80 millimeters and 40 millimeters, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |