US3387472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic interlock to facilitate automatic control of rolling mill with varying numbers of operational stands
Assignee: Bethlehem Steel Corp
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Filing: 1966-02-04
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Granted: 1968-06-11
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Expires: 1986-02-04
Abstract
No abstract record available.
Inventors
- 👤 Pullen Charles Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:33
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/48; B21B37/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A STRIP ROLLING MILL COMPRISING FIRST ROLL STAND, A SECOND ROLL STAND, A THIRD ROLL STAND AND A CONTROL SYSTEM TO CONTROL AN OPERATION OF A MILL SYSTEM INCLUDING THE FOLLOWING MEANS FOR CONTROLLING SAID OPERATION OF THE MILL, MEANS ASSOCIATED WITH THE FIRST STAND FOR GENERATING A FIRST SIGNAL INDICATIVE OF THE PRESENCE OF STRIP IN THE STAND AND A SECOND SIGNAL INDICATIVE OF THE ABSENCE OF STRIP IN THE STAND, MEANS ASSOCIATED WITH THE THIRD STAND FOR GENERATING A FIRST SIGNAL INDICATIVE OF THE PRESENCE OF STRIP IN THE STAND AND A SECOND SIGNAL INDICATIVE OF THE ABSENCE OF STRIP IN THE STAND, AND FIRST LOGIC CIRCUIT MEANS FOR CONTROLLING SAID OPERATION OF THE MILL IN RESPONSE TO THE FOLLOWING SIGNALS FROM SAID SIGNAL GENERATING MEANS, A SIGNAL FROM THE FIRST STAND INDICATING THE PRESENCE OF STRIP THEREIN, A SIGNAL FROM THE THIRD STAND INDICATING THE ABSENCE OF STRIP THEREIN, AND A SUBSEQUENT SIGNAL FROM SAID THIRD STAND INDICATING THE PRESENCE OF STRIP THEREIN,
Claim 2
Dependent Claim
167 words
IN A STRIP ROLLING MILL COMPRISING FIRST ROLL STAND, A SECOND ROLL STAND, A THIRD ROLL STAND AND A CONTROL SYSTEM TO CONTROL AN OPERATION OF A MILL SYSTEM INCLUDING THE FOLLOWING MEANS FOR CONTROLLING SAID OPERATION OF THE MILL, MEANS ASSOCIATED WITH THE FIRST STAND FOR GENERATING A FIRST SIGNAL INDICATIVE OF THE PRESENCE OF STRIP IN THE STAND AND A SECOND SIGNAL INDICATIVE OF THE ABSENCE OF STRIP IN THE STAND, MEANS ASSOCIATED WITH THE THIRD STAND FOR GENERATING A FIRST SIGNAL INDICATIVE OF THE PRESENCE OF STRIP IN THE STAND AND A SECOND SIGNAL INDICATIVE OF THE ABSENCE OF STRIP IN THE STAND, AND FIRST LOGIC CIRCUIT MEANS FOR CONTROLLING SAID OPERATION OF THE MILL IN RESPONSE TO THE FOLLOWING SIGNALS FROM SAID SIGNAL GENERATING MEANS, A SIGNAL FROM THE FIRST STAND INDICATING THE PRESENCE OF STRIP THEREIN, A SIGNAL FROM THE THIRD STAND INDICATING THE ABSENCE OF STRIP THEREIN, AND A SUBSEQUENT SIGNAL FROM SAID THIRD STAND INDICATING THE PRESENCE OF STRIP THEREIN,
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |