US3611764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling rolling mills
Assignee: Toshiba Corp
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Filing: 1969-07-15
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Granted: 1971-10-12
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Expires: 1989-07-15
Abstract
Abstract IN A METHOD AND APPARATUS FOR CONTROLLING A ROLLING MILL WHEREIN A CROWN CONTROLLER IS USED TO CONTROL THE CROWN OF THE MILL ROLLS AND THE CONTROLLER IS OPERATED IN ACCORDANCE WITH THE SURFACE CONTOUR OF THE STRIP, THE SURFACE CONTOURS AT THE CENTRAL PORTION AND EDGE PORTION OF THE STRIP ARE MEASURED BY PHOTOELECTRIC MEANS TO OBTAIN DIFFERENTIATED SIGNALS CORRESPONDING TO RESPECTIVE SURFACE CONTOURS AND THE DIFFERENCE BETWEEN DIFFERENTIATED SIGNAL IS UTILISED TO OPERATE THE CROWN CONTROLLER.
Inventors
- 👤 Kunji Asano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:11
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/02; B21B37/00; B21B37/28; B21B2267/00; B21B2267/18; B21B2267/22
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |