US3276759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen lance manipulator for open hearth furnaces
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1963-08-12
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Granted: 1966-10-04
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Augustine J Kardos
- 👤 Jr Walter Mainwaring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:42
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
APPARATUS FOR INSERTING AND RETRACTING AN OXYGEN LANCE THROUGH AN OPENING IN THE ROOF OF AN OPEN HEARTH FURNACE COMPRISING, A TOWER, MEANS TO MOVE THE TOWER BETWEEN A GENERALLY HORIZONTAL POSITION AND A GENERALLY VERTICAL POSITION, MEANS SUPPORTING AN OXYGEN LANCE ON SAID TOWER, SAID SUPPORTING MEANS INCLUDING MEANS TO RAISE AND LOWER THE LANCE BETWEEN A RETRACTED POSITION AND AN OPERATING POSITION WHEN THE TOWER IS VERTICAL, SAID SUPPORTING MEANS COMPRISING MEANS FOR CARRYING THE LANCE WITH THE TOWER WHEN THE LANCE IS IN ITS RETRACTED POSITION AND THE TOWER IS MOVED BETWEEN ITS VERTICAL AND HORIZONTAL POSITION AND FOR MAINTAINING THE LANCE VERTICAL WHEN THE LANCE IS IN ITS OPERATING POSITION AND THE TOWER IS MOVED BETWEEN ITS VERTICAL AND HORIZONTAL POSITIONS.
Claim 2
Dependent Claim
125 words
APPARATUS FOR INSERTING AND RETRACTING AN OXYGEN LANCE THROUGH AN OPENING IN THE ROOF OF AN OPEN HEARTH FURNACE COMPRISING, A TOWER, MEANS TO MOVE THE TOWER BETWEEN A GENERALLY HORIZONTAL POSITION AND A GENERALLY VERTICAL POSITION, MEANS SUPPORTING AN OXYGEN LANCE ON SAID TOWER, SAID SUPPORTING MEANS INCLUDING MEANS TO RAISE AND LOWER THE LANCE BETWEEN A RETRACTED POSITION AND AN OPERATING POSITION WHEN THE TOWER IS VERTICAL, SAID SUPPORTING MEANS COMPRISING MEANS FOR CARRYING THE LANCE WITH THE TOWER WHEN THE LANCE IS IN ITS RETRACTED POSITION AND THE TOWER IS MOVED BETWEEN ITS VERTICAL AND HORIZONTAL POSITION AND FOR MAINTAINING THE LANCE VERTICAL WHEN THE LANCE IS IN ITS OPERATING POSITION AND THE TOWER IS MOVED BETWEEN ITS VERTICAL AND HORIZONTAL POSITIONS.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |