Flowbox
Abstract
Abstract A FLOWBOX FOR A PAPER BOARD OR SIMILAR FIBROUS-WEBMAKING MACHINE COMPRISES AN ENCLOSED EXPLOSION CHAMBER OF LONGITUDINAL POLYGONAL CROSS-SECTION, A STOCK INLET AND OUTLET DISPOSED IN OPPOSED WALLS OF THE CHAMBER, EACH OF OVERALL CROSS-SECTION LESS THAN THE TRANSVERSE CROSS-SECTION OF THE EXPLOSION CHAMBER AT THE INLET AND OUTLET RESPECTIVELY, AND A TRANSVERSE PLANAR BAFFLE DISPOSED IN THE PATH OF STOCK ENTERING THE CHAMBER FOR DEFINING THEREWITH TWO SUCCESSIVE PORTIONS IN THE EXPLOSION CHAMBER, EACH OF DIVERGENT/CONVERGENT CROSS SECTION WITH A RESTRICTED PASSAGE THEREBETWEEN. STOCK IMPINGING ON THE BAFFLE AND FLOWING THROUGH THE SUCCESSIVE DEVERGENT/CONVERGENT PORTIONS OF THE CHAMBER UNDERGOES A RAPID CHANGE IN THE DIRECTION AND VELOCITY OF FLOW, THE STOCK BEING CAUSED TO REVERSE ITS DIRECTION OF FLOW AND PASS UPWARDLY OVER THE BAFFLE, SO THAT TURBULENCE MIXING AND DEFLOCCULATION IS PROMOTED.
Inventors
- 👤 James A Higgins
- 👤 Brian W Attwood
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |