US3811307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rolling metal sheet articles
Assignee: Individual
•
Filing: 1971-06-28
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Granted: 1974-05-21
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Expires: 1991-06-28
Abstract
Abstract A method of rolling metal sheet articles in which the rolls in an adjacent pair are rotated in opposite directions at different peripheral speeds under conditions of a rigid mechanical characteristic of the drive of the roll rotating at a higher peripheral speed and such a mechanical characteristic of the drive of the roll rotating at a lower peripheral speed that in the process of rolling the ratio of the peripheral speeds of the rolls is equal to the ratio of the thicknesses of the articles at input and output portions thereof before and after the rolling in the adjacent pair of rolls at a constant thickness of the output portion of the article and at a speed of movement of the output portion of the article equal to the peripheral speed of the roll rotating at a higher peripheral speed.
Inventors
- 👤 V Vydrin
- 👤 L Ageev
- 👤 V Sosjurko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:05
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/22; B21B1/222; B21B37/00; B21B37/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
240 words
A method of rolling metal sheet articles between the driving rolls of a rolling mill in which the rolls in an adjacent pair are rotated in opposite directions at different peripheral speeds while providing for a rigid or close to rigid mechanical characteristic of the drive of the roll rotating at a higher speed, whereby said higher speed is maintained under conditions of varying torque, and such a mechanical characteristic of the drive of the roll rotating at a lower peripheral speed, that its peripheral speed varies inversely with variations in the load thereon due to longitudinal variations in thickness of the input portion of the article, so that, during the rolling, the ratio of the peripheral speeds of the rolls is variable so as to be maintained equal to the ratio of the thicknesses of the article at the input and output portions thereof before and after the rolling in the adjacent pair of rolls at a constant or close to constant thickness of the output portion of the article, and at a speed of movement of the output portion of the article equal to the peripheral speed of the roll rotating at a higher peripheral speed, tensile forces being applied to the input and output portions of the articles by successively enveloping the rolls by the article, first on said roll rotating at said lower peripheral speed, and then on said roll rotating at said higher peripheral speed.
Claim 2
Independent Claim
240 words
A method of rolling metal sheet articles between the driving rolls of a rolling mill in which the rolls in an adjacent pair are rotated in opposite directions at different peripheral speeds while providing for a rigid or close to rigid mechanical characteristic of the drive of the roll rotating at a higher speed, whereby said higher speed is maintained under conditions of varying torque, and such a mechanical characteristic of the drive of the roll rotating at a lower peripheral speed, that its peripheral speed varies inversely with variations in the load thereon due to longitudinal variations in thickness of the input portion of the article, so that, during the rolling, the ratio of the peripheral speeds of the rolls is variable so as to be maintained equal to the ratio of the thicknesses of the article at the input and output portions thereof before and after the rolling in the adjacent pair of rolls at a constant or close to constant thickness of the output portion of the article, and at a speed of movement of the output portion of the article equal to the peripheral speed of the roll rotating at a higher peripheral speed, tensile forces being applied to the input and output portions of the articles by successively enveloping the rolls by the article, first on said roll rotating at said lower peripheral speed, and then on said roll rotating at said higher peripheral speed.
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |