US3608347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for manufacturing rings
Assignee: Individual
•
Filing: 1968-09-17
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Granted: 1971-09-28
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Expires: 1988-09-17
Abstract
Abstract A PROCESS AND APPARATUS FOR PRODUCING CONTINUOUSLY A SPIRAL, CYLINDRICAL PACKAGE BY WINDING A FLAT IRON BAND. THE DIAMETER OF THE FORMED CYLINDRICAL PACKAGE CORRESPONDS SUBSTANTIALLY TO THE EXTERIOR DIAMETER OF THE FORMED SPIRAL RINGS. THE FLAT IRON BAND IS WOUND AROUND A CIRCULAR SUPPORT WHILE BEING GUIDED BY CIRCULAR ROTATABLE MEANS UPWARDLY AROUND THE CIRCULAR SUPPORT. THESE CIRCULAR ROTATABLE GUIDING MEANS BEAR AGAINST THE FLAT IRON BAND IN THE AREA WHERE THE BAND BEGINS ITS RUN AROUND THE CIRCULAR SUPPORT IN A TANGENTIAL DIRECTION AND IN AN AREA ON THE CIRCULAR SUPPORT REMOVED APPROXIMATELY 90* THEREFROM.
Inventors
- 👤 Werner Kemminer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:20
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/16; B21D11/00; B21D11/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49297
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |