Papermaking headbox with adjustable hydraulic nozzle and slice
Abstract
Abstract AN ADJUSTABLE PRESSURE NOZZLE FOR THE DELIVERY OF PAPERMAKING FURNISHES TO FORAMINOUS MEDIA IN THE HIGH SPEED PRODUCTION OF PAPER AND WET LAID NONWOVEN, WHICH ADJUSTABLE PRESSURE NOZZLE IS PROVIDED WITH ARTICULATION IN ITS VARIOUS ROOF SECTIONS AND THROAT. EITHER OR BOTH THE FORMATION ZONE AND THROAT OF THE ADJUSTABLE PRESSURE NOZZLE CAN BE ADJUSTED AND THEREAFTER MAINTAINED IN POSITION WHILE THE CONVERGENCE ANGELES IN THE APPROACH CHANNEL PRECEDING THE THROAT REMAIN ADJUSTALBE BY EMPLOYING PIVOTABLE KNUCKLES BETWEEN THE VARIOUS ROOF SECTIONS, EACH KNUCKLE BEING CONNECTED TO AN INDIVIDUAL KNUCKLE PIVOT, THE KNUCKLES DOWNSTREAM OF THE APPROACH CHANNEL BEING VERTICALLY ADJUSTABLE; AND BY EMPLOYING AN EXPANSION KNUCKLE UPSTREAM OF THE APPROACH CHANNEL. THE ADJUSTABLE PRESSURE NOZZLE PROVIDES MEANS AND PROCESS WHERBY TENSILE RATIO ADJUSTMENTS ARE CONVENIENTLY AFFECTED DURING PAPER FORMATION WHILE THE FORMATION ZONE LENGTH AND GEOMETRY ARE FIXED.
Inventors
- 👤 John S Amneus
- 👤 Abdul S Bahrani
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) | 1974-01-18 | 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 |