Patent US3303683A successfully refreshed from Google Patents.
US3303683A
Expired / Lapsed
US
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Press die assembly for bending machines
Assignee: Pines Engineering Co Inc
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Filing: 1963-11-27
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Granted: 1967-02-14
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Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:06
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/02; B21D7/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN APPARATUS FOR BENDING TUBULAR STOCK, A BENDING DIE AND A WIPER DIE ASSOCIATED THEREWITH, A BACK-UP BLOCK FOR THE TRAILING END OF THE TUBULAR STOCK, A PRESS DIE MOVABLE INTO TIGHT CLAMPING ENGAGEMENT WITH THE TUBULAR STOCK IN OPPOSITION TO THE BACK-UP BLOCK, AND MEANS OPERABLE TO ADVANCE THE PRESS DIE IN THE DIRECTION OF THE BENDING DIE DURING A BENDING OPERATION.
Claim 2
Dependent Claim
63 words
IN APPARATUS FOR BENDING TUBULAR STOCK, A BENDING DIE AND A WIPER DIE ASSOCIATED THEREWITH, A BACK-UP BLOCK FOR THE TRAILING END OF THE TUBULAR STOCK, A PRESS DIE MOVABLE INTO TIGHT CLAMPING ENGAGEMENT WITH THE TUBULAR STOCK IN OPPOSITION TO THE BACK-UP BLOCK, AND MEANS OPERABLE TO ADVANCE THE PRESS DIE IN THE DIRECTION OF THE BENDING DIE DURING A BENDING OPERATION.
References Cited (Backward Citations)
US3242710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |