Suction cylinder for transmitting a torque
Abstract
Abstract A DEVICE FOR DRIVING A WEB OR STRIP OF MATERIAL BY A ROTATABLE SHELL IN WHICH THE STRIP IS HELD WRAPPED AROUND THE ROTATING SHELL BY SUCTION APPLIED FROM WITHIN THE SHELL IN WHICH THE REGION OF CONTACT OF THE STRIP ON THE ROTATING SHELL COVERS MORE THAN THE LIMITED AREA OF THE WRAPPING REGION TO WHICH THE SUCTION PRESSURE IS APPLIED. THE POINT OF CONTACT OF THE STRIP WHERE IT RUNS ON TO AND OFF THE ROTATING MEMBER DOES NOT OVERLIE THE SUCTION MEANS WITHIN THE ROTATING MEMBER BUT OVERLIES A PORTION OF THE INTERIOR WHICH IS CONNECTED TO THE ATMOSPHERE. SEALS WHICH SEPARATE THE SUCTION REGION FROM THE ATMOSPHERIC REGION ARE SEPARATED SLIGHTLY FROM THE ANNULAR WALL OF THE ROTATING MEMBER.
Inventors
- 👤 Peter Herzhoff
- 👤 Hans Gref
- 👤 Wolfgang Schweicher
- 👤 Willi Wasser
- 👤 Kurt Browatzki
- 👤 Joseph Friedsam
- 👤 Max Heidenreich
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |