US3323345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll changing apparatus
Assignee: Blaw Knox Co
•
Filing: 1963-12-26
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Granted: 1967-06-06
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Lyle David
- 👤 Robert F Elling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:35
CPC Classifications
B; B21; B21B; B21B31/00; B21B31/08; B21B31/10; B21B31/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
ROLL CHANGING APPARATUS FOR ROLLING MILLS COMPRISING A SUPPORTING STRUCTURE, A CARRIER MOUNTED ON THE SUPPORTING STRUCTURE FOR GUIDED MOVEMENT RELATIVELY THERETO, MEANS ON THE CARRIER FOR GRASPING AN END OF A ROLLING MILL ROLL AND MEANS FOR MOVING THE CARRIER TO DELIVER THE ROLL WHILE SUPPORTED FROM SAID END IN CANTILEVER FASHION BETWEEN A ROLL STAND AND A ROLL SUPPORT SEPARATE FROM THE ROLL STAND.
Claim 2
Dependent Claim
66 words
ROLL CHANGING APPARATUS FOR ROLLING MILLS COMPRISING A SUPPORTING STRUCTURE, A CARRIER MOUNTED ON THE SUPPORTING STRUCTURE FOR GUIDED MOVEMENT RELATIVELY THERETO, MEANS ON THE CARRIER FOR GRASPING AN END OF A ROLLING MILL ROLL AND MEANS FOR MOVING THE CARRIER TO DELIVER THE ROLL WHILE SUPPORTED FROM SAID END IN CANTILEVER FASHION BETWEEN A ROLL STAND AND A ROLL SUPPORT SEPARATE FROM THE ROLL STAND.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |