Patent US4337122A successfully refreshed from Google Patents.
US4337122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke oven door
Assignee: Koritsu Machine Industries Ltd
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Filing: 1980-12-19
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Granted: 1982-06-29
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Expires: 2000-12-19
Abstract
Abstract A new and useful coke oven door which is simple in construction but provides complete sealing efficiency. A pair of supporting holes are formed on each of upper and lower portions of the side plates of the door body, and through the supporting holes a locking bar extends which has on the center portion an arm for rotating and on both ends rollers eccentrically located with respect thereto. By rotating the locking bar with the arm, the door can be moved slightly backward or forward when removing or installating lest the knife edge should scratch the door sealing frame.
Inventors
- 👤 Tetsuo Kurihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:38
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
In a coke oven, a combination comprising a door body having side plates; upper and lower supporting holes formed horizontally in said side plates; upper and lower locking bars each extending through one of said holes and having an axis of rotation and two spaced ends; and a pair of rollers mounted on each of said locking bars at the respective ends thereof and turnable about an axis which is eccentric relative to said axis of rotation, said rollers being adapted for engagement with latching hooks projecting from the sealing frame of the door.
Claim 2
Dependent Claim
94 words
In a coke oven, a combination comprising a door body having side plates; upper and lower supporting holes formed horizontally in said side plates; upper and lower locking bars each extending through one of said holes and having an axis of rotation and two spaced ends; and a pair of rollers mounted on each of said locking bars at the respective ends thereof and turnable about an axis which is eccentric relative to said axis of rotation, said rollers being adapted for engagement with latching hooks projecting from the sealing frame of the door.
Claim 3
Dependent Claim
25 words
A combination as defined in claim 1; and further comprising a knife-edge sealing member on said door at a side thereof facing the coke oven.
Claim 4
Dependent Claim
36 words
A combination as defined in claim 1; and further comprising an operating arm engaging a center portion of each locking bar and extending transverse to said axis of rotation, so as to rotate the locking bar.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |