Sieve device in an upright cylindrical container for continuous flow of cellulosic material
Abstract
Abstract AT LEAST ONE HOLLOW SIEVE BODY HAVING COAXIAL CYLINDRICAL SIEVE FACES IS LOCATED NEAR THE LOWER END OF A CYLINDRICAL CONTAINER THROUGH WHICH A MIXTURE OF CELLULOSIC MATERIAL AND A TREATING LIUQID IS PASSED VERTICALLY DOWNWARDS. THE SIEVE BODY IS SUSPENDED BY A VERTICAL TUBE LOCATED CENTRALLY OF THE CONTAINER WHICH TUBE FURTHER SERVES FOR DISCHARGING FILTRATE FROM THE INTERIOR OF THE SIEVE BODY. AN OPERATING MEANS AT THE TOP OF THE CONTAINER PERIODICALLY LIFTS THE SIEVE BODY, WHICH, INTERMEDIATE OF THE PERIODIC LIFTS, MOVES DOWNWARDLY WITH THE CELLULOSIC MATERIAL. THE SIEVE BODY IS GIVEN STABILITY BY RADICAL SUPPORT ARMS WHICH SLIDABLY COMMUNICATE WITH GUIDE MEANS FIXED TO THE INNER SIDE OF THE CONTAINER.
Inventors
- 👤 Johan C F C Richter
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |