US4061319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile truck for relining a converter
Assignee: United States Steel Corp
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Filing: 1976-08-27
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Granted: 1977-12-06
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Expires: 1996-08-27
Abstract
Abstract The rebricking of a converter lining is facilitated by a mobile truck arranged to carry a winch-operated platform to be lowered into the converter when the truck is disposed in overlying relation to the mouth thereof. The truck is moved along rails, at least part of which are rails that mount the movable lower portion of the converter hood.
Inventors
- 👤 Sadaharu Tanaka
- 👤 Sadayuki Saito
- 👤 Sensaburo Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:40
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
In an organization for the pneumatic production of steel including a steelmaking converter having an upwardly opening mouth, a gas collecting hood over the mouth of said converter, means for removing at least the lowermost portion of said hood from its operative position over said converter mouth including a pair of rails straddling the converter mouth in superposed relation thereto, the improvement comprising: a. a second pair of rails parallel to, but spaced below said mouth-straddling rails and extending to a position closely adjacent said converter; b. a mobile truck including a frame of generally rectangular configuration; c. said frame having wheels mounted thereon for engagement with both of said rail pairs; d. platform means carried by said truck; e. winch means mounted on said truck and operatively connecting said platform means for raising and lowering the same to and from the interior of said converter when said truck is disposed in overlying relation to the mouth thereof; and f. means for moving said truck into overlying relation to the mouth of said converter when said hood portion is removed therefrom.
Claim 2
Dependent Claim
181 words
In an organization for the pneumatic production of steel including a steelmaking converter having an upwardly opening mouth, a gas collecting hood over the mouth of said converter, means for removing at least the lowermost portion of said hood from its operative position over said converter mouth including a pair of rails straddling the converter mouth in superposed relation thereto, the improvement comprising: a. a second pair of rails parallel to, but spaced below said mouth-straddling rails and extending to a position closely adjacent said converter; b. a mobile truck including a frame of generally rectangular configuration; c. said frame having wheels mounted thereon for engagement with both of said rail pairs; d. platform means carried by said truck; e. winch means mounted on said truck and operatively connecting said platform means for raising and lowering the same to and from the interior of said converter when said truck is disposed in overlying relation to the mouth thereof; and f. means for moving said truck into overlying relation to the mouth of said converter when said hood portion is removed therefrom.
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) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |