US3623349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bending machines
Assignee: Chr Haeusler AG
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Filing: 1969-06-09
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Granted: 1971-11-30
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Expires: 1989-06-09
Abstract
Abstract A BENDING MACHINE FOR FORMING A CONE FOR A SHEET HAVING THE SHAPE OF A SEGMENT OF AN ANNULUS, COMPRISING A SLIDE SHOE AT ONE END LOCATED BETWEEN A PAIR OF TRANSPORT ROLLS, AND A PAIR OF BENDING ROLLS ARRANGED ONE ON EITHER SIDE OF THE TRANSPORT ROLLS. THE ROLLS ARE ADJUSTABLE TO ENSURE THAT, AS THE SHEET IS BEING PASSED THROUGH THE MACHINE, THE SHORTER EDGE IS PASSED WITH A LOWER SPACED AND FORMED WITH A HIGHER CURVATURE RELATIVE TO THE LARGER ARCUATE EDGE, WHILST REMAINING AT ALL TIMES IN TANGENTIAL CONTACT WITH THE SHOE.
Inventors
- 👤 Christian Hausler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:12
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/14
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |