US3197986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for rolling mills
Assignee: General Dynamics Corp
•
Filing: 1961-11-07
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Granted: 1965-08-03
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robert P Freedman
- 👤 Peter J Barnikel
- 👤 James H Torrance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
B; B21; B21B; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/30; B21B37/00; B21B37/58; B21B31/32; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
CONTROL APPARATUS FOR A ROLLING MILL WHEREIN A PIECE OF MATERIAL IS PASSED BETWEEN A PAIR OF WORKING ROLLS SUPPORTED IN A FRAME TO REDUCE ITS THICKNESS TO A DESIRED VALUE COMPRISING FLUID-ACTUATED RAPID RESPONSE ADJUSTING MEANS INTERPOSED BETWEEN THE FRAME AND ONE OF THE WORKING ROLLS TO VARY THE SEPARATION OF THE ROLLS IN RESPONSE TO A CONTROL SIGNAL, AND MEANS OPERATIVELY POSITIONED IN ADVANCE OF THE PAIR OF WORKING ROLLS FOR DETERMINING THE FORCE NECESSARY TO ACCOMPLISH A DESIRED REDUCTION IN THE THICKNESS OF THE PIECE AND TRANSMITTING TO THE ADJUSTING MEANS A CONTROL SIGNAL TO ACTUATE THE ADUSTING MEANS TO PRODUCE THE NECESSARY FORCE AT THE TIME THE PIECE PASSED BETWEEN THE WORKING ROLLS.
Claim 2
Dependent Claim
117 words
CONTROL APPARATUS FOR A ROLLING MILL WHEREIN A PIECE OF MATERIAL IS PASSED BETWEEN A PAIR OF WORKING ROLLS SUPPORTED IN A FRAME TO REDUCE ITS THICKNESS TO A DESIRED VALUE COMPRISING FLUID-ACTUATED RAPID RESPONSE ADJUSTING MEANS INTERPOSED BETWEEN THE FRAME AND ONE OF THE WORKING ROLLS TO VARY THE SEPARATION OF THE ROLLS IN RESPONSE TO A CONTROL SIGNAL, AND MEANS OPERATIVELY POSITIONED IN ADVANCE OF THE PAIR OF WORKING ROLLS FOR DETERMINING THE FORCE NECESSARY TO ACCOMPLISH A DESIRED REDUCTION IN THE THICKNESS OF THE PIECE AND TRANSMITTING TO THE ADJUSTING MEANS A CONTROL SIGNAL TO ACTUATE THE ADUSTING MEANS TO PRODUCE THE NECESSARY FORCE AT THE TIME THE PIECE PASSED BETWEEN THE WORKING ROLLS.
References Cited (Backward Citations)
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US2040755A
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US2525687A
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US2575590A
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |