US3581536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sensing the unstressed shape of a thin strip subjected to high tensile stress
Assignee: General Electric Co
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Filing: 1969-04-17
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Granted: 1971-06-01
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Expires: 1989-04-17
Abstract
Abstract A cold rolling mill is described wherein the unstressed shape of metal sheet is continuously sensed during rolling by a plurality of negligible displacement force sensors perpendicularly disposed relative to the pass line at a mill location producing a tensile stress above 4,000 p.s.i. in the metal sheet being rolled. The output signals from those sensors underlying opposite edges of the metal sheet are compared to equalize reduction at the sheet edges while the difference between the force measured by a centrally situated sensor and the average force measured by the sensors underlying opposite edges of the sheet provide a signal indicative of the roll bending force required to produce flat sheet.
Inventors
- 👤 George E Terwilliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:38
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/10; G01L5/106; B; B21; B21B; B21B38/00; B21B38/02; G01L5/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A cold rolling mill for cold rolling a strip of steel as claimed in claim 1 wherein said force sensing means are strain sensitive transducers and further including at least one force sensing means disposed centrally of the strip, electrical means responsive to said center force sensing means and said edge sensing means for producing a signal proportional in magnitude and poLarity to the difference in force at the center of the rolled strip as compared to the average value of the forces measured simultaneously at the ends of the strip, and means responsive to the signal indicating the difference between the force at the center of the rolled strip compared to the average value of the forces at the ends of the strip for bending said work rolls to adjust the work roll crown by an amount proportional to said difference between forces.
Claim 2
Dependent Claim
28 words
A cold rolling mill for cold rolling a strip of steel according to claim 1 wherein said force sensing means are positioned between stands of the rolling mill.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |