Patent EP0635238A1 successfully refreshed from Google Patents.
US3287953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for curving sheets, in particular to obtain conical workpiece and the like
Assignee: Individual
•
Filing: 1963-10-31
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Granted: 1966-11-29
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Boldrini Prosperino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16; B21C37/18; B21C37/185; B21D; B21D5/00; B21D5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A MACHINE FOR BENDING METAL SHEETS COMPRISING A FRAME PROVIDED WITH A PAIR OF VERTICALLY ARRANGED GUIDES, A BENDING ROLL HAVING A BEARING FIXED ON SAID FRAME, A PAIR OF ADJUSTABLE ROLLS EACH PROVIDED WITH A SUPPORT ADJUSTABLE IN SAID GUIDES, SAID SUPPORTS BEING TILTABLE SO THAT THE AXES OF SAID LAST-NAMED ROLL, AND A PAIR OF RELATED TO THE AXIS OF SAID BENDING ROLL, AND A PAIR OF SUPPLEMENTARY ROLLS RESPECTIVELY MOUNTED ON SAID SUPPORTS AND ADJUSTABLE AND TILTABLE THEREWITH.
Claim 2
Dependent Claim
81 words
A MACHINE FOR BENDING METAL SHEETS COMPRISING A FRAME PROVIDED WITH A PAIR OF VERTICALLY ARRANGED GUIDES, A BENDING ROLL HAVING A BEARING FIXED ON SAID FRAME, A PAIR OF ADJUSTABLE ROLLS EACH PROVIDED WITH A SUPPORT ADJUSTABLE IN SAID GUIDES, SAID SUPPORTS BEING TILTABLE SO THAT THE AXES OF SAID LAST-NAMED ROLL, AND A PAIR OF RELATED TO THE AXIS OF SAID BENDING ROLL, AND A PAIR OF SUPPLEMENTARY ROLLS RESPECTIVELY MOUNTED ON SAID SUPPORTS AND ADJUSTABLE AND TILTABLE THEREWITH.
References Cited (Backward Citations)
US1338946A
Cited
US1435041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |