Method of making a fine screen
Abstract
Abstract A METHOD FOR MAKING SCREENING PANELS FROM HARDENABLE SYNTHETIC ORGANIC RESINOUS MATERIAL BY INTRODUCING THE LIQUID RESINOUS MATERIAL INTO A MOLD HAVING A PLURALITY OF INTERCONNECTING GROOVES PROVIDING TRUNCATED PEAKS THEREBETWEEN IN AN AMOUNT IN EXCESS OF THAT REQUIRED TO FILL THE GROOVES, PLACING A RESILIENT COVERING SHEET OVER THE FILLED MOLD AND THEN A RIGID PLANE COVER ON THE RESILIENT SHEET. THE COVER AND SHEET ARE SECURED TO THE MOLD SO THAT THE TRUNCATED PEAKS PRESS INTO THE RESILIENT SHEET THUS REMOVING EXCESS RESINOUS MATERIAL FROM THE TOPS OF THE PEAKS AND EXUDING EXCESS RESINOUS MATERIAL FROM THE MOLD. THE RESINOUS MATERIAL IS THEN ALLOWED TO SET AND AFTER DISASSEMBLING THE COVER AND SHEET THE SCREENING PANEL IS REMOVED FROM THE MOLD IN A SUBSTANTIALLY FLASH FREE CONDITION.
Inventors
- 👤 Charles J Williams
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 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 |