US3570288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling-mill assembly with improved control system
Assignee: Fried Krupp AG
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Filing: 1968-10-18
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Granted: 1971-03-16
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Expires: 1988-10-18
Abstract
Abstract A ROLLING MILL WITH TWO ROLLS HAS AN IMPROVED CONTROL ASSEMBLY WHICH COMPRISES ELECTROMAGNETIC OR PHOTOELECTRIC SENSORS WHICH METER THE GAP BETWEEN THE ROLLS WHILE REMAINING OUT OF CONTACT WITH THEM. THE OUTPUT OF THIS SENSING ARRANGEMENT IS COMPARED WITH A REFERENCE VALUE TO YIELD AN ERROR SIGNAL WHICH IS FED TO AN ADJUSTMENT MECHANISM TO CHANGE THE ROLLER GAP IF NECESSARY. FURTHER SENSORS FOR METERING A BENDING IN THE ROLLS CAN BE PROVIDED AND COUPLED WITH A DEVICE FOR STRAIGHTENING THE ROLL. IN ADDITION A GUAGE MEASURING THE THICKNESS OF THE ROLLED WORKPIECE CAN BE USED TO PROVIDE A CROSS CHECK ON THE FUNCTIONING OF THE APPARATUS.
Inventors
- 👤 Friedrich Fischer
- 👤 Franz Gutlbauer
- 👤 Robert Kracht
- 👤 Georg Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/58; B21B37/62; B21B38/00; B21B38/10
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |