Patent US3221530A successfully refreshed from Google Patents.
US3221530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mills horizontal-roll change
Assignee: Davy Loewy Ltd
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Filing: 1963-01-08
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Granted: 1965-12-07
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Expires: 1983-01-08
Abstract
No abstract record available.
Inventors
- 👤 Swallow Reginald Dennis
- 👤 Stubbs Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:13
CPC Classifications
B; B21; B21B; B21B31/00; B21B31/08; B21B31/10; B21B31/103; B21B13/00; B21B13/08; B21B13/10; B21B2013/106; B21B35/00; B21B2035/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
IN COMBINATION A UNIVERSAL BEAM MILL STAND AND A MOBILE ROLL-CHANGE UNIT FOR CHANGING THE HORIZONTAL ROLLS THEREOF, THE MILL STAND HAVING MEANS FOR LOWERING THE LOWER HORIZONTAL ROLL ASSEMBLY TO A ROLL CHANGING POSITION IN WHICH THAT LOWER HORIZONTAL ROLL ASSEMBLY CAN BE REMOVED HORIZONTALLY TO ONE SIDE OF THE STAND BELOW A VERTICAL ROLL ASSEMBLY AND HAVING MEANS FOR RAISING THE UPPER HORIZONTAL ROLL ASSEMBLY TO A ROLL CHANGING POSITION IN WHICH THAT UPPER HORIZONTAL ROLL ASSEMBLY CAN BE REMOVED HORIZONTALLY TO SAID ONE SIDE OF THE STAND ABOVE SAID VERTICAL ROLL ASSEMBLY, THE MILL STAND HAVING MEANS FOR SUPPORTING THE UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES AS THEY ARE MOVED HORIZONTALLY TO SAID ONE SIDE OF THE STAND AND THE MOBILE ROLL CHANGE UNIT BEING POSITIONABLE AT SAID ONE STAND SIDE AND INCLUDING A CARRIAGE HAVING INTEGRAL UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES CEIVE THE UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES RESPECTIVELY; A TRACK EXTENDING IN A DIRECTION NORMAL TO THE PASSLINE OF THE MILL BETWEEN SAID ONE SIDE OF THE STAND AND A ROLL STORAGE AREA; MEANS FOR DRIVING THE CARRIAGE OVER THE TRACK BETWEEN THE ROLL STORAGE AREA AND SAID POSITION AT SAID SIDE OF THE STAND AND ROLL TRANSFER MEANS FOR MOVING THE HORIZONTAL ROLL ASSEMBLIES BETWEEN THE MILL STAND AND THE CARRIAGE.
Claim 2
Dependent Claim
219 words
IN COMBINATION A UNIVERSAL BEAM MILL STAND AND A MOBILE ROLL-CHANGE UNIT FOR CHANGING THE HORIZONTAL ROLLS THEREOF, THE MILL STAND HAVING MEANS FOR LOWERING THE LOWER HORIZONTAL ROLL ASSEMBLY TO A ROLL CHANGING POSITION IN WHICH THAT LOWER HORIZONTAL ROLL ASSEMBLY CAN BE REMOVED HORIZONTALLY TO ONE SIDE OF THE STAND BELOW A VERTICAL ROLL ASSEMBLY AND HAVING MEANS FOR RAISING THE UPPER HORIZONTAL ROLL ASSEMBLY TO A ROLL CHANGING POSITION IN WHICH THAT UPPER HORIZONTAL ROLL ASSEMBLY CAN BE REMOVED HORIZONTALLY TO SAID ONE SIDE OF THE STAND ABOVE SAID VERTICAL ROLL ASSEMBLY, THE MILL STAND HAVING MEANS FOR SUPPORTING THE UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES AS THEY ARE MOVED HORIZONTALLY TO SAID ONE SIDE OF THE STAND AND THE MOBILE ROLL CHANGE UNIT BEING POSITIONABLE AT SAID ONE STAND SIDE AND INCLUDING A CARRIAGE HAVING INTEGRAL UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES CEIVE THE UPPER AND LOWER HORIZONTAL ROLL ASSEMBLIES RESPECTIVELY; A TRACK EXTENDING IN A DIRECTION NORMAL TO THE PASSLINE OF THE MILL BETWEEN SAID ONE SIDE OF THE STAND AND A ROLL STORAGE AREA; MEANS FOR DRIVING THE CARRIAGE OVER THE TRACK BETWEEN THE ROLL STORAGE AREA AND SAID POSITION AT SAID SIDE OF THE STAND AND ROLL TRANSFER MEANS FOR MOVING THE HORIZONTAL ROLL ASSEMBLIES BETWEEN THE MILL STAND AND THE CARRIAGE.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |