Patent US3018190A successfully refreshed from Google Patents.
US3018190A
Expired / Lapsed
US
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Method and apparatus for treating metallic strands in hot dip coating
Assignee: Armco Inc
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Filing: 1960-09-26
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Granted: 1962-01-23
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Earle L Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/003; C23C2/0036; C23C2/00361; C23C2/02; C23C2/04; C23C2/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
IN A PROCESS OF COATING A METAL STRAND WITH MOLTEN ALUMINUM, WHEREIN THE STRAND, AFTER UNDERGOING A PRETREATMENT, IS CAUSED TO MOVE VERTICALLY UPWARD AND THROUGH A HOLE IN THE BOTTOM OF A COATING POT CONTAINING MOLTEN ALUMINUM, AND WHEREIN SAID STRAND, IN PASSING FROM THE PRETREATMENT PORTION OF THE APPARATUS TO THE COATING POT, PASSES THROUGH A TUBULAR MEMBER INTO WHICH A NON-OXIDIZING GAS IS FED; THE STEPS OF ENHANCING THE WETTABILITY OF SAID STRAND BY SAID ALUMINUM AND THUS IMPROVING THE QUALITY AND APPEARANCE OF THE ALUMINUM COATED STRAND, WHICH INCLUDE CAUSING SAID STRAND WHILE HOT AND BEFORE IT ENTERS SAID COATING POT, TO MELT AND VAPORIZE METALLIC SODIUM, CAUSING SAID VAPORIZED SODIUM TO CONTACT THE STRAND IN ADMIXTURE WITH SAID NON-OXIDIZING GAS, AND PROTECTING SAID STRAND FROM THE ATMOSPHERE UP TO ITS ENTRY INTO THE COATING METAL.
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |