Method of coating articles with a film-forming material
Abstract
Abstract THE SPRESENT INVENTTION CONCERNS A PROCESS FOR COATING A SURFACE WITH A FILM-FORMING MATERIAL DISSOLVED OR DISPERSED IN A CHLORINATED SOLVENT, WHICH COMPRISES (1) RAISING THE TEMPERATURE OF THE SURFACE WHILE THE SURFACE PASSES THROUGH A FIRST ZONE CONTAINING THE SATURATED VAPORS OF SAID SOLVENT, APPLYING SAID FILM FORMING-MATERIAL IN A SECOND ZONE AND REMOVING THE SOLVENT FROM SAID FILM BY MAINTAINING SAID SURFACE HAVING SAID FILM IN SAID SECOND ZONE IN IMMEDIATE CONTACT WITH AIR OR OTHER INERT GAS HAVING A SOLVENT RELATIVE HUMIDITY PREFERABLY LESS THAN 50%, AND DURING WHICH PERIOD THE SURFACE TEMPERATURE IS RAISED ABOVE THE BOILING OF THE SOLVENT, INTRODUCING THE SURFACE INTO A THIRD ZONE CONTAINING SATURATED VAPORS OF SAID SOLVENT AND FINALLY WITHDRAWING THE SURFACE COATED WITH THE FILM TO THE AMBIENT ATMOSPHERE, WITHDRAWING THE SOLVENT LADEN AIR FROM SAID SECOND ZONE, REMOVING THE SOLVENT THEREFROM AND RETURNING SAID AIR TO SAID SECOND ZONE.
Inventors
- 👤 James L Dunn Jr
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |