Pneumatic conveyance of rod-shaped articles
Abstract
Abstract A DEVICE IS PROVIDED FOR PNEUMATICALLY DESPATCHING RODS AT ONE LOCATION AND PNEUMATICALLY CONVEYING THEM TO ANOTHER LOCATION. THE DEVICE INCLUDES A CONDUIT WHICH IS CONNECTED AT ITS OUTLET END TO A PNEUMATIC TERMINAL AND WHICH HAS TWO ONE-WAY VALVES IN IT. THE FIRST ONE-WAY VALVE IS LOCATED NEAR THE OUTLET END OF THE CONDUIT AND MEANS ARE PROVIDED TO APPLY ALTERNATELY PRESSURE TO THE FORWARD SIDE OF THE VALVE (PRESSURE CYCLE) AND SUCTION TO THE REAR SIDE OF THE VALVE (SUCTION CYCLE). THE SECOND ONE-WAY VALVE IS LOCATED BETWEEN THE INLET END OF THE CONDUIT AND THE MEANS FOR APPLYING SUCTION TO THE FIRST ONE-WAY VALVE. MEANS ARE PROVIDED FOR APPLYING PRESSURE TO THE FORWARD SIDE OF THIS SECOND VALVE DURING THE PRESSURE CYCLE. THE RODS ARE ARRANGED IN A SINGLE VERTICAL ROW THE BASE OF WHICH IS OFF-SET FROM THE INLET END OF THE CONDUIT AND ALIGNMENT MEANS IS PROVIDED. THE ALIGNMENT MEANS INCLUDES MEANS FOR PNEUMATICALLY MOVING A ROD AT THE FOOT OF THE ROW INTO ALIGNMENT WITH THE INLET END OF THE CONDUIT DURING THE SUCTION CYCLE AND MEANS FOR HOLDING A ROD AT THE FOOT OF THE ROW IN THE OFF-SET POSITION DURING THE PRESSURE CYCLE.
Inventors
- 👤 Johannes J Liebenberg
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |