US3134279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mills
Assignee: Davy Loewy Ltd
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Filing: 1962-06-04
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Granted: 1964-05-26
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Sims Raymond Bernard
- 👤 Harrison James Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:19
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/46; G; G01; G01L; G01L3/00; G01L3/02; G01L3/04; G01L3/10; G01L3/108; B21B2275/00; B21B2275/10; B21B2275/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A METHOD OF CONTROLLING A ROLLING MILL TO REDUCE SCRATCHING OF THE WORK, WHICH COMPRISES MEASURING THE DIFFERENCE BETWEEN THE TORQUES TRANSMITTED RESPECTIVELY TO TWO OPPOSED WORK ROLLS OF THE MILL AND APPLYING LUBRICATION TO THE TWO SIDES OF THE WORK WHICH RESPECTIVELY CONTACT SAID ROLLS IN SUCH A RATIO AS TO REDUCE THE MEASURED DIFFERENCE TOWARDS ZERO.
Claim 2
Independent Claim
58 words
A METHOD OF CONTROLLING A ROLLING MILL TO REDUCE SCRATCHING OF THE WORK, WHICH COMPRISES MEASURING THE DIFFERENCE BETWEEN THE TORQUES TRANSMITTED RESPECTIVELY TO TWO OPPOSED WORK ROLLS OF THE MILL AND APPLYING LUBRICATION TO THE TWO SIDES OF THE WORK WHICH RESPECTIVELY CONTACT SAID ROLLS IN SUCH A RATIO AS TO REDUCE THE MEASURED DIFFERENCE TOWARDS ZERO.
Claim 3
Dependent Claim
109 words
AN AUTOMATIC CONTROL SYSTEM FOR A ROLLING MILL HAVING A PAIR OF WORK ROLLS, A DRIVE FOR EACH WORK ROLL AND LUBRICATION MEANS FOR INDIVIDUALLY LUBRICATING THE SIDES OF THE WORK WHICH ARE CONTRACTED BY THE WORK ROLLS, SAID CONTROL SYSTEM COMPRISING TORQUE DETECTORS ON THE DRIVE FOR EACH WORK ROLL OF THE MILL, MEANS RESPONSIVE TO THE DETECTORS FOR GENERATING A SIGNAL REPRESENTING THE DIFFERENCE BETWEEN THE TORQUES TRANSMITTED RESPECTIVELY TO THE TWO WORK ROLLS, MEANS FOR VARYING THE LUBRICATION APPLIED TO AT LEAST ONE SIDE OF THE WORK AND MEANS RESPONSIVE TO SAID SIGNAL FOR AUTOMATICALLY CONTROLLING THE LUBRICATION VARYING MEANS TO MAINTAIN SAID TORQUES SUBSTANTIALLY EQUAL.
Claim 4
Dependent Claim
109 words
AN AUTOMATIC CONTROL SYSTEM FOR A ROLLING MILL HAVING A PAIR OF WORK ROLLS, A DRIVE FOR EACH WORK ROLL AND LUBRICATION MEANS FOR INDIVIDUALLY LUBRICATING THE SIDES OF THE WORK WHICH ARE CONTRACTED BY THE WORK ROLLS, SAID CONTROL SYSTEM COMPRISING TORQUE DETECTORS ON THE DRIVE FOR EACH WORK ROLL OF THE MILL, MEANS RESPONSIVE TO THE DETECTORS FOR GENERATING A SIGNAL REPRESENTING THE DIFFERENCE BETWEEN THE TORQUES TRANSMITTED RESPECTIVELY TO THE TWO WORK ROLLS, MEANS FOR VARYING THE LUBRICATION APPLIED TO AT LEAST ONE SIDE OF THE WORK AND MEANS RESPONSIVE TO SAID SIGNAL FOR AUTOMATICALLY CONTROLLING THE LUBRICATION VARYING MEANS TO MAINTAIN SAID TORQUES SUBSTANTIALLY EQUAL.
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |