US3664166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for the continuous rolling of thin strips
Assignee: Compagnie des Ateliers et Forges de la Loire SA
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Filing: 1969-04-18
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Granted: 1972-05-23
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Expires: 1989-04-18
Abstract
Abstract A previously hot-rolled strip is subjected to a first thicknessregularizing pass in the cold state through a mill permitting of not maintaining to a constant value the thickness variations of the strip before and after the rolling operation, that is, imparting to the strip an elongation to which a constant value is not imposed, that first pass being followed by several rolling passes performed in rolling stands in which a predetermined elongation is imparted to the strip.
Inventors
- 👤 Pierre Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:56
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/22; B21B1/24; B21B1/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A device for continuously cold-rolling a thin strip comprising a first rolling stand for performing a thickness regularizing pass, two tension units between which said rollingstand is disposed to impart to said strip leaving said stand a more constant thickness than said strip had entering said stand, and a plurality of further rolling stands having tension units disposed on each side of each rolling stand each imparting a predetermined elongation to said strip, said elongation being imposed in each of said further stands by the use of said tension units disposed on each side of each stand, and mechanical connecting means disposed between said tension units for maintaining at a constant, adjustable ratio the rotation velocities of said units.
Claim 2
Independent Claim
119 words
A device for continuously cold-rolling a thin strip comprising a first rolling stand for performing a thickness regularizing pass, two tension units between which said rollingstand is disposed to impart to said strip leaving said stand a more constant thickness than said strip had entering said stand, and a plurality of further rolling stands having tension units disposed on each side of each rolling stand each imparting a predetermined elongation to said strip, said elongation being imposed in each of said further stands by the use of said tension units disposed on each side of each stand, and mechanical connecting means disposed between said tension units for maintaining at a constant, adjustable ratio the rotation velocities of said units.
Claim 3
Dependent Claim
38 words
A device as set forth in claim 1, wherein variable-speed means are provided for adjusting the constant ratio maintained between the rotational speeds of the tension units disposed on either side of each of said further rolling stands.
Claim 4
Dependent Claim
78 words
A device as set forth in claim 1, wherein a variable-speed gearing is provided for adjusting the constant ratio maintained between the rotational speeds of the tension units disposed on either side of each of said further rolling stands and loop-forming means interposed between said rolling stands for tensioning said strip at the exit side of one stand and the tension unit at the entry side of the next stand while permitting accumulating strip in said loop-forming means.
References Cited (Backward Citations)
US2176094A
Cited
US2264277A
Cited
US2306792A
Cited
US2287380A
Cited
US3049036A
Cited
US3169420A
Cited
US3170344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |