US3707400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of gas wiping wire emerging from a hot-dip coating bath
Assignee: United States Steel Corp
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Filing: 1970-12-28
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Granted: 1972-12-26
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Expires: 1990-12-28
Abstract
Abstract A GAS JET IS DIRECTED RADIALLY ONTO A WIRE IN THE AXIS OF THE JET TO DETERMINE THE THICKNESS AND SMOOTHNESS OF LIQUID COATING ON THE WIRE. THE QUALITY OF THE COATING ACHIEVED IS MARKEDLY IMPROVED IF THE RESULTING DOWNWARD COMPONENT OF THE JET IS CONFINED BY WALLS EXTENDING FROM THE WIPE REGION DOWN TO THE BATH, TO CAUSE THE WIPING JET TO FLUCTUATE AT A MUCH LOWER FREQUENCY. WHERE THE LIQUID COATING IS AN OXIDIZABLE METAL SUCH AS ZN OR AL, IT IS ALSO DESIRABLE TO EMPLOY AN INERT OR REDUCING GAS, TO FURTHER IMPROVE COAT QUALITY.
Inventors
- 👤 Mahlon A Harvey
- 👤 Charles D Stricker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/14; C23C2/16; C23C2/18; C23C2/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |