Airfoil nozzle
Abstract
Abstract FOR THE TREATMENT OF SURFACES SUCH AS A WEB OF MATERIAL TO BE CLEANED, FRIED OR STABILIZED WITHOUT PHYSICAL CONTACT WITH THE WEB. AN AIRFOIL NOZZLE IS PROVIDED FROM WHICH CLEANING DRYING OR STABILIZING GAS IS DISCHARGED TANGENTIALLY AGAINST THE WEB. THE NOZZLE EXTENDS ACROSS THE WEB TO BE TREATED AND CONSISTS OF A FOIL HAVING A DEFINED RADIUS AT THE NOZZLE DISCHARGE AREA AND A FOIL PLATE WHICH EXTENDS ALONG ONE SIDE OF THE FOIL IN A DIRECTION TANGENTIAL TO THE FOIL TO PROVIDE A RESTRICTED PASSAGE BETWEEN THE PLATE AND FOIL FROM WHICH THE GAS IS DISCHASRGED TOWARD THE WEB TO BE TREATED. THE VELOCITY OF THE DISCHARGED GAS IS SUCH THAT THE STATIC PRESSURE ON THE SIDE OF THE WEB ADJACENT THE FOIL IS LOWER THAN THE PRESSURE THE OPPOSITE SIDE OF THE WEB SO THE AT THE WEB IS FORCED BY THE DIFERENTIAL IN PRESSURES TOWARD BY THEE AIRFOIL AND RIDES ON THE GAS CUSHION PROVIDED BY THE DISCHARGED GAS TENDING TO FOLLOW THE RADIUS OF CURVATURE OF THE FOIL.
Inventors
- 👤 William F Overly
- 👤 Kenneth J Pagel
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) | 1974-06-27 | 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 |