US3103138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foil thickness control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1960-06-09
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Granted: 1963-09-10
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Expires: 1980-06-09
Abstract
No abstract record available.
Inventors
- 👤 John W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/16; B; B21; B21B; B21B37/00; B21B37/48; B21B37/52; B21B37/54; G01N23/083; Y; Y10; Y10T; Y10T29/00; Y10T29/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN CONTROL APPARATUS FOR A FOIL ROLLING MILL HAVING A ROLL MEMBER DRIVEN BY A FIRST MOTOR AND INCLUDING A TENSION CONTROLLING DEVICE HAVING A SECOND MOTOR, THE COMBINATION OF SIGNAL PROVIDING MEANS OPERATIVE WITH THE FOIL LEAVING SAID MILL FOR PROVIDING A THICKNESS ERROR SIGNAL IN ACCORDANCE WITH THE ACTUAL FOIL THICKNESS COMPARED TO A DESIRED REFERENCE FOIL THICKNESS, FIRST THICKNESS CONTROL MEANS OPERATIVE WITH ONLY ONE OF SAID FIRST AND SECOND MOTORS FOR VARYING THE SPEED OF SAID ONE MOTOR AS A SUBSTANTIALLY DIRECT PROPORTIONAL FUNCTION OF SAID ERROR SIGNAL, AND SECOND THICKNESS CONTROL MEANS OPERATIVE WITH ONLY THE OTHER OF SAID FIRST AND SECOND MOTORS FOR CONTROLLING SAID OTHER MOTOR AS A PREDETERMINED RATE INTEGRAL OF SAID ERROR SIGNAL.
Claim 2
Dependent Claim
122 words
IN CONTROL APPARATUS FOR A FOIL ROLLING MILL HAVING A ROLL MEMBER DRIVEN BY A FIRST MOTOR AND INCLUDING A TENSION CONTROLLING DEVICE HAVING A SECOND MOTOR, THE COMBINATION OF SIGNAL PROVIDING MEANS OPERATIVE WITH THE FOIL LEAVING SAID MILL FOR PROVIDING A THICKNESS ERROR SIGNAL IN ACCORDANCE WITH THE ACTUAL FOIL THICKNESS COMPARED TO A DESIRED REFERENCE FOIL THICKNESS, FIRST THICKNESS CONTROL MEANS OPERATIVE WITH ONLY ONE OF SAID FIRST AND SECOND MOTORS FOR VARYING THE SPEED OF SAID ONE MOTOR AS A SUBSTANTIALLY DIRECT PROPORTIONAL FUNCTION OF SAID ERROR SIGNAL, AND SECOND THICKNESS CONTROL MEANS OPERATIVE WITH ONLY THE OTHER OF SAID FIRST AND SECOND MOTORS FOR CONTROLLING SAID OTHER MOTOR AS A PREDETERMINED RATE INTEGRAL OF SAID ERROR SIGNAL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |