US3169158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for annealing coils of steel strip
Assignee: United States Steel Corp
•
Filing: 1961-06-28
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Granted: 1965-02-09
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Wigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:25
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/663; C21D9/667; C21D9/67; C21D1/00; C21D1/74; C21D1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
APPARATUS FOR ANNEALING COILS OF STEEL STRIP COMPRISING MEANS FOR SUPPORTING A COIL OF STRIP, A COVER FOR ENCLOSING SAID SUPPORTED COIL OF STRIP, A CONDUIT FOR DELIVERING A HEAT TREATING ATMOSPHERE GAS TO THE COIL OF STRIP WITHIN SAID COVER, A U-TUBE HAVING TWO SUBSTANTIALLY VERTICAL LEGS AND A CONNECTION BETWEEN THE LOWER ENDS OF SAID LEGS, SAID VERTICAL LEGS AND SAID CONNECTION CONTAINING WATER, MEANS CONNECTING THE UPPER END OF THE FIRST OF SAID LEGS TO SAID CONDUIT, MEANS FOR SUPPLYING WATER TO THE SECOND LEG OF SAID U-TUBE, AND MEANS FOR SUPPLYING HEAT
Claim 2
Dependent Claim
96 words
APPARATUS FOR ANNEALING COILS OF STEEL STRIP COMPRISING MEANS FOR SUPPORTING A COIL OF STRIP, A COVER FOR ENCLOSING SAID SUPPORTED COIL OF STRIP, A CONDUIT FOR DELIVERING A HEAT TREATING ATMOSPHERE GAS TO THE COIL OF STRIP WITHIN SAID COVER, A U-TUBE HAVING TWO SUBSTANTIALLY VERTICAL LEGS AND A CONNECTION BETWEEN THE LOWER ENDS OF SAID LEGS, SAID VERTICAL LEGS AND SAID CONNECTION CONTAINING WATER, MEANS CONNECTING THE UPPER END OF THE FIRST OF SAID LEGS TO SAID CONDUIT, MEANS FOR SUPPLYING WATER TO THE SECOND LEG OF SAID U-TUBE, AND MEANS FOR SUPPLYING HEAT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |