Curtain coating apparatus
Abstract
Abstract AN IMPROVED COATING DEVICE FOR USE IN COATING OBJECTS PASSING ALONG A PATH BELOW THE COATING DEVICE AND THROUGH A SHEET OF LIQUID COATING MATERIAL FALLING FROM THE COATING DEVICE, SAID DEVICE COMPRISING A RESERVOIR FOR HOLDING A SUPPLY OF LIQUID COATING MATERIAL, AN INTERNALLY DISPOSED HOLLOW HOUSING FOR DISPENSING LIQUID COATING MATERIAL INTO THE RESERVOIR AT A UNIFORM CHOSEN RATE OF FLOW, AND A WEIR DEFINING THE EFFECTIVE UPPER EDGE OF THE RESERVOIR OVER WHICH THE LIQUID COATING MATERIAL IS DIRECTED, THE WEIR HAVING A DOWNWARDLY EXTENDING SURFACE TERMINATING IN AN EDGE DISPOSED IN SPACED RELATION ABOVE THE OBJECTS TO BE COATED AND ALONG WHICH THE LIQUID COATING MATERIAL OVERFLOWING THE UPPER SURFACE OF THE WEIR IS ADAPTED TO FLOW TO PRODUCE A DOWNWARDLY FALLING SHEET OR CURTAIN OF LIQUID COATING MATERIAL THROUGH WHICH THE OBJECT IS TO BE COATED PASSES.
Inventors
- 👤 Frederic F Perry
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) | 1974-06-27 | 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 |