US3208251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill control system
Assignee: Westinghouse Canada Inc
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Filing: 1962-04-20
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Granted: 1965-09-28
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Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Hulls
- 👤 Derek H Lennox
- 👤 George H Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:50
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/10; B21B37/00; B21B37/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CONTROL SYSTEM FOR A ROLLING MILL, COMPRISING A PAIR OF WORK ROLLS BETWEEN WHICH PASSES THE MATERIAL TO BE ROLLED, THE SYSTEM COMPRISING MEANS FOR MAKING A MEASUREMENT THAT IS EFFECTIVELY A DIRECT MEASUREMENT OF THE DISTANCE BETWEEN THE AXES OF ROTATION OF THE WORK ROLLS AND FOR PRODUCING A FIRST ELECTRIC SIGNAL REPRESENTATIVE THEREOF, MEANS FOR PRODUCING A SECOND SIGNAL REPRESENTATIVE OF THE SEPARATING FORCE PRODUCED BETWEEN THE ROLLS WITH THE MATERIAL PASSING BETWEEN THEM, MEANS UTILIZING THE SAID FIRST AND SECOND SIGNALS IN THE PRODUCTION OF A THIRD SIGNAL REPRESENTATIVE OF THE OUTPUT THICKNESS OF MATERIAL THAT HAS PASSED BETWEEN THE ROLLS, AND MEANS UTILIZING THE SAID THIRD SIGNAL FOR CONTROLLING THE OPERATION OF SAID WORK ROLLS O THE MILL.
Claim 2
Dependent Claim
123 words
A CONTROL SYSTEM FOR A ROLLING MILL, COMPRISING A PAIR OF WORK ROLLS BETWEEN WHICH PASSES THE MATERIAL TO BE ROLLED, THE SYSTEM COMPRISING MEANS FOR MAKING A MEASUREMENT THAT IS EFFECTIVELY A DIRECT MEASUREMENT OF THE DISTANCE BETWEEN THE AXES OF ROTATION OF THE WORK ROLLS AND FOR PRODUCING A FIRST ELECTRIC SIGNAL REPRESENTATIVE THEREOF, MEANS FOR PRODUCING A SECOND SIGNAL REPRESENTATIVE OF THE SEPARATING FORCE PRODUCED BETWEEN THE ROLLS WITH THE MATERIAL PASSING BETWEEN THEM, MEANS UTILIZING THE SAID FIRST AND SECOND SIGNALS IN THE PRODUCTION OF A THIRD SIGNAL REPRESENTATIVE OF THE OUTPUT THICKNESS OF MATERIAL THAT HAS PASSED BETWEEN THE ROLLS, AND MEANS UTILIZING THE SAID THIRD SIGNAL FOR CONTROLLING THE OPERATION OF SAID WORK ROLLS O THE MILL.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |