US3089365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece thickness control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1960-05-23
•
Granted: 1963-05-14
•
Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 John W Wallace
- 👤 Paul E Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:27
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/16; B21B37/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
IN STRIP THICKNESS CONTROL APPARATUS FOR A ROLLING MILL INCLUDING A STRIP TENSION CONTROL DEVICE, THE COMBINATION OF AN ERROR SIGNAL SOURCE OPERATIVE WITH THE STRIP FOR PROVIDING A STRIP THICKNESS ERROR SIGNAL, A SIGNAL GATE DEVICE OPERATIVE WITH SAID ERROR SIGNAL SOURCE, SIGNAL INTEGRATION MEANS CONNECTED BETWEEN SAID SIGNAL GATE DEVICE AND THE STRIP TENSION CONTROL DEVICE FOR CONTROLLING THE PASSAGE OF A PREDETERMINED INTEGRAL OF THE ERROR SIGNAL TO THE TENSION CONTROL DEVICE FOR THE PURPOSE OF VARYING THE TENSION OF THE STRIP RELATIVE TO SAID ROLLING MILL AND THEREBY THE THICKNESS OF THE STRIP ROLLED BY SAID ROLLING MILL, A TIMING DEVICE OPERATIVE WITH SAID GATE DEVICE FOR OPENING THE GATE DEVICE FOR A PREDETERMINED TIME DURATION PERIOD, AND A SIGNAL MAGNITUDE SENSING DEVICE OPERATIVE WITH SAID SIGNAL SOURCE AND CONNECTED TO SAID TIMING DEVICE FOR CONTROLLING THE OPERATION OF SAID TIMING DEVICE IN ACCORDANCE WITH THE MAGNITUDE OF SAID ERROR SIGNAL AND THEREBY THE THICKNESS ERROR OF SAID STRIP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |