Method for changing the rolls of a rolling mill and apparatus for applying the method
Abstract
Abstract D R A W I N G THE ROLL REPLACEMENT OF THE ROLLING MILL IS MADE IN THE FOLLOWING MANNER: THERE IS ATTACHED A CROSS BEAM PROVIDED WITH A RAIL ON THE UPPER SIDE AS WELL AS ON THE LOWER SIDE OF THE ROLL STAND AND EACH CROSS BEAM CAN MOVE UP AND DOWN. HORIZONTAL ROLLS ARE SUPPORTED ON EACH OF THE CROSS BEAMS. AT THE TIME OF THE ROLL REPLACING. THE UPPER CROSS BEAM IS RAISED AND THE LOWER CROSS BEAM IS PULLED DOWN BY MEANS OF THE SCREW ADJUSTING DEVICE SO THAT THE ROLL REPLACEMENT CAN BE MADE WITH EASE IN THE ROLL STAND. WHEN THE VERTICAL ROLLS ARE TO BE REPLACED AT THE SAME TIME WITH THE HORIZONTAL ROLLS, THE VERTICAL ROLLS ARE SUSPENDED ON THE CHOCK OF THE UPPER HORIZONTAL ROLL OR PLACED ON THE LOWER HORIZONTAL ROLL, AND A DEVICE FOR PUSHING IN AND DRAWING OUT IS MADE TO ENGAGE WITH THE CHOCK FOR THE UPPER AND LOWER HORIZONTAL ROLLS, AND THEN SETS OF ALL ROLLS CAN BE CHANGED AT THE SAME TIME.
Inventors
- 👤 Eiichi Kato
- 👤 Yukio Ohno
Bibliographic Details
Claims Analysis
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |