Patent US3606788A successfully refreshed from Google Patents.
US3606788A
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Short-radius squeeze bending apparatus
Assignee: Foster Wheeler Inc
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Filing: 1969-10-14
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Granted: 1971-09-21
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Expires: 1989-10-14
Abstract
Abstract A SQUEEZE BENDING APPARATUS IN WHICH A TUBE BLANK, PREVIOUSLY FABRICATED WITH A RELATIVELY WIDE BEND, IS FORMED WITH A SHORT RADIUS TUBE BEND. AN INNER DIE IS OPERATIVELY CONNECTED BETWEEN A PAIR OF OUTER DIES FOR CONJOINTLY BRINGING THE DIES TOGETHER AT A UNIFORM RATE OF MOVEMENT SUCH THAT SHORT RADIUS BENDS CAN BE UNIFORMLY FABRICATED.
Inventors
- 👤 Raymond C Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:58
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |