Patent US4009978A successfully refreshed from Google Patents.
Patent US3290912A successfully refreshed from Google Patents.
US3290912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1964-02-20
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Granted: 1966-12-13
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Reid Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
IN STRIP TENSION CONTROL APPARATUS FOR A ROLLING MILL HAVING A FIRST STAND AND A SECOND STAND, WITH EACH STAND INCLUDING A FRAME AND HAVING TOP AND BOTTOM ROLLS BETWEEN WHICH THE STRIP PASSES, THE COMBINATION OF FORCE SENSING MEANS OPERATIVE WITH SAID FIRST STAND AND BEING POSITIONED BETWEEN SAID FRAME AND AT LEAST ONE OF SAID ROLLS OF THE FIRST STAND FOR PROVIDING A CONTROL SIGNAL THAT VARIES IN ACCORDANCE WITH THE FORCE BETWEEN SAID FRAME AND SAID ONE ROLL WHEN THE STRIP IS PASSING BETWEEN THE TOP AND BOTTOM ROLLS OF THE FIRST STAND, SIGNAL PROVIDING MEANS OPERATIVE WITH SAID FIRST CONTROL SIGNAL AND BEING RESPONSIVE TO THE STRIP BEING PRESENT BETWEEN THE ROLLS OF THE FIRST STAND AND BEING RESPONSIVE TO THE STRIP BEING PRESENT BETWEEN THE ROLLS OF THE SECOND STAND TO PROVIDE A SECOND CONTROL SIGNAL IN ACCORDANCE WITH THE DIFFERENCE IN SAID FORCE PRIOR TO THE STRIP BEING BETWEEN THE ROLLS OF THE SECOND STAND AND AFTER THE STRIP IS BETWEEN THE ROLLS OF THE SECOND STAND, AND STRIP TENSION CONTROL MEANS OPERATIVE WITH AT LEAST ONE OF SAID STANDS FOR CONTROLLING IN ACCORDANCE WITH THE SECOND CONTROL SIGNAL THE TENSION IN SAID STRIP PASSING BETWEEN THE FIRST STAND AND THE SECOND STAND.
Claim 2
Dependent Claim
209 words
IN STRIP TENSION CONTROL APPARATUS FOR A ROLLING MILL HAVING A FIRST STAND AND A SECOND STAND, WITH EACH STAND INCLUDING A FRAME AND HAVING TOP AND BOTTOM ROLLS BETWEEN WHICH THE STRIP PASSES, THE COMBINATION OF FORCE SENSING MEANS OPERATIVE WITH SAID FIRST STAND AND BEING POSITIONED BETWEEN SAID FRAME AND AT LEAST ONE OF SAID ROLLS OF THE FIRST STAND FOR PROVIDING A CONTROL SIGNAL THAT VARIES IN ACCORDANCE WITH THE FORCE BETWEEN SAID FRAME AND SAID ONE ROLL WHEN THE STRIP IS PASSING BETWEEN THE TOP AND BOTTOM ROLLS OF THE FIRST STAND, SIGNAL PROVIDING MEANS OPERATIVE WITH SAID FIRST CONTROL SIGNAL AND BEING RESPONSIVE TO THE STRIP BEING PRESENT BETWEEN THE ROLLS OF THE FIRST STAND AND BEING RESPONSIVE TO THE STRIP BEING PRESENT BETWEEN THE ROLLS OF THE SECOND STAND TO PROVIDE A SECOND CONTROL SIGNAL IN ACCORDANCE WITH THE DIFFERENCE IN SAID FORCE PRIOR TO THE STRIP BEING BETWEEN THE ROLLS OF THE SECOND STAND AND AFTER THE STRIP IS BETWEEN THE ROLLS OF THE SECOND STAND, AND STRIP TENSION CONTROL MEANS OPERATIVE WITH AT LEAST ONE OF SAID STANDS FOR CONTROLLING IN ACCORDANCE WITH THE SECOND CONTROL SIGNAL THE TENSION IN SAID STRIP PASSING BETWEEN THE FIRST STAND AND THE SECOND STAND.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |