US3084081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of ferrous strip materials with separator coating
Assignee: Armco Inc
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Filing: 1957-12-30
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Granted: 1963-04-02
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Victor W Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:17
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; C21D1/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A METHOD OF HEAT TREATING FERROUS METALLIC STRIP WITH THE USE OF AN ANNEALING SEPARATOR CONTAINING WATER OF CONSTITUTION CAPABLE OF BEING DRIVEN OFF AT A TEMPERATURE LOWER THAN THE HIGHEST TEMPERATURE TO BE REACHED IN THE SAID HEAT TREATMENT, WHICH COMPRISES COATING METALLIC STRIP WITH SAID SEPARATOR, COILING THE COATED STRIP, AND, IN A FIRST STAGE POSITIONING THE COILS SO FORMED WITH THEIR AXES IN A SUBSTANTIALLY HORIZONTAL DIRECTION AND WITH BOTH ENDS OPEN TO THE ATMOSPHERE AND APPLYING HEAT PRIMARILY TO THE ENDS OF SAID COILS SO AS TO HEAT ALL PARTS OF SAID COILS TO A TEMPERATURE AT WHICH SAID WATER OF CONSTITUTION IS DRIVEN OFF WHILE AVOIDING A TEMPERATURE AT WHICH SAID COILS SAG DUE TO HEAT SOFTENING, REMOVING THE EVOLVED WATER OF CONSITUTION FROM THE VICINITY OF SAID COILS, AND IN A SECOND STAGE POSITIONING SAID COILS WITH THEIR AXES SUBSTANTIALLY VERTICAL, AND HEATING THEM TO A HIGHER TEMPERATURE BY APPLYING HEAT THERETO PRIMARILY TRANSVERSELY TO THE AXES OF SAID COILS.
Claim 2
Independent Claim
166 words
A METHOD OF HEAT TREATING FERROUS METALLIC STRIP WITH THE USE OF AN ANNEALING SEPARATOR CONTAINING WATER OF CONSTITUTION CAPABLE OF BEING DRIVEN OFF AT A TEMPERATURE LOWER THAN THE HIGHEST TEMPERATURE TO BE REACHED IN THE SAID HEAT TREATMENT, WHICH COMPRISES COATING METALLIC STRIP WITH SAID SEPARATOR, COILING THE COATED STRIP, AND, IN A FIRST STAGE POSITIONING THE COILS SO FORMED WITH THEIR AXES IN A SUBSTANTIALLY HORIZONTAL DIRECTION AND WITH BOTH ENDS OPEN TO THE ATMOSPHERE AND APPLYING HEAT PRIMARILY TO THE ENDS OF SAID COILS SO AS TO HEAT ALL PARTS OF SAID COILS TO A TEMPERATURE AT WHICH SAID WATER OF CONSTITUTION IS DRIVEN OFF WHILE AVOIDING A TEMPERATURE AT WHICH SAID COILS SAG DUE TO HEAT SOFTENING, REMOVING THE EVOLVED WATER OF CONSITUTION FROM THE VICINITY OF SAID COILS, AND IN A SECOND STAGE POSITIONING SAID COILS WITH THEIR AXES SUBSTANTIALLY VERTICAL, AND HEATING THEM TO A HIGHER TEMPERATURE BY APPLYING HEAT THERETO PRIMARILY TRANSVERSELY TO THE AXES OF SAID COILS.
References Cited (Backward Citations)
US2394047A
Cited
US2495561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |