Patent US3552162A successfully refreshed from Google Patents.
US3552162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill control system
Assignee: Bethlehem Steel Corp
•
Filing: 1968-04-22
•
Granted: 1971-01-05
•
Expires: 1988-04-22
Abstract
Abstract A ROLLING MILL HAS A GAGEMETER CONTROL ON SUBSTANTIALLY EVERY MILL STAND. AN X-RAY GAGE DEVIATION SIGNAL IS FED THROUGH AN ISOLATOR UNIT WHICH PROVIDES A WIDE DEAD-BAND WITHIN THE GAGE TOLERANCE FOR A PARTICULAR ORDER. IF THE GAGE DEVIATION SIGNAL EXCEEDS THE WIDTH OF THE DEAD-BAND THE DEVIATION SIGNAL IS INTEGRATED IN A HIGH GAIN INTEGRATOR AND USED TO CHANGE THE SET POINT OF THE GAGEMETERS ON EACH GAGEMETER CONTROLLED MILL STAND UNTIL THE X-RAY GAGE DEVIATION RETURNS WITHIN THE DEAD-BAND PROVIDED BY THE ISOLATOR UNIT.
Inventors
- 👤 George C Gingher Jr
- 👤 Lawrence J Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:32
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/58; B21B37/60; B21B2265/00; B21B2265/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |