US2862839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of removing oxides from strip
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1956-12-05
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Granted: 1958-12-02
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Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Mchenry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:42
CPC Classifications
C; C23; C23G; C23G3/00; C23G3/02; C23G3/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN APPARATUS FOR REMOVING OXIDES FROM STRIP MATERIAL FORMED FROM REFRACTORY METAL SELECTED FROM THE CLASS OF TITANIUM, TITANIUM BASE ALLOYS, ZIRCONIUM AND ZIRCONIUM BASE ALLOYS, THE COMBINATION OF, A TANK ADAPTED TO CONTAIN A MOLTEN ALKALI METAL CAUSTIC BATH FOR REACTING WITH THE OXIDES ON THE STRIP, AN IMMERSION ROLL AT LEAST PARTIALLY BELOW THE TOP OF THE TANK AND ADAPTED TO BE AT LEAST PARTIALLY IMMERSED IN SAID BATH AND IN CONTACT WITH THE STRIP FOR HOLDING THE STRIP IMMERSED THEREIN, AN IDLER ROLL PARTIALLY BELOW THE TOP OF THE TANK AND ADPATED TO BE AT LEAST PARTIALLY IMMERSED IN SAID BATH OUT OF CONTACT WITH THE STRIP, MEANS FOR EFFECTING ROTATION OF THE IDLER ROLL, AND MEANS FOR COOLING THE ROTATING IDLER ROLL TO A TEMPERATURE SUBSTANTIALLY LESS THAN THE TEMPERATURE OF THE IMMERSION ROLL, THE COLLED IDLER ROLL COOPERATING IN SAID BATH TO PREFERENTIALLY ATTRACT AND RECEIVE METAL OXIDES REMOVED FROM THE STRIP IN SAID BATH TO THEREBY MAINTAIN THE IMMERSION ROLL SUBSTANTIALLY FREE FROM SAID METAL OXIDES.
Claim 2
Dependent Claim
172 words
IN APPARATUS FOR REMOVING OXIDES FROM STRIP MATERIAL FORMED FROM REFRACTORY METAL SELECTED FROM THE CLASS OF TITANIUM, TITANIUM BASE ALLOYS, ZIRCONIUM AND ZIRCONIUM BASE ALLOYS, THE COMBINATION OF, A TANK ADAPTED TO CONTAIN A MOLTEN ALKALI METAL CAUSTIC BATH FOR REACTING WITH THE OXIDES ON THE STRIP, AN IMMERSION ROLL AT LEAST PARTIALLY BELOW THE TOP OF THE TANK AND ADAPTED TO BE AT LEAST PARTIALLY IMMERSED IN SAID BATH AND IN CONTACT WITH THE STRIP FOR HOLDING THE STRIP IMMERSED THEREIN, AN IDLER ROLL PARTIALLY BELOW THE TOP OF THE TANK AND ADPATED TO BE AT LEAST PARTIALLY IMMERSED IN SAID BATH OUT OF CONTACT WITH THE STRIP, MEANS FOR EFFECTING ROTATION OF THE IDLER ROLL, AND MEANS FOR COOLING THE ROTATING IDLER ROLL TO A TEMPERATURE SUBSTANTIALLY LESS THAN THE TEMPERATURE OF THE IMMERSION ROLL, THE COLLED IDLER ROLL COOPERATING IN SAID BATH TO PREFERENTIALLY ATTRACT AND RECEIVE METAL OXIDES REMOVED FROM THE STRIP IN SAID BATH TO THEREBY MAINTAIN THE IMMERSION ROLL SUBSTANTIALLY FREE FROM SAID METAL OXIDES.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |