Method and apparatus for coating metal strips
Abstract
Abstract AN APPARATUS FOR APPLYING A COATING TO A METAL STRIP WHEREBY THE METAL STRIP IS FIRST PRETREATED TO CONDITION IT FOR APPLICATION OF THE COATING, AFTER WHICH THE COATING IS APPLIED TO EITHER ONE OR BOTH SIDES OF THE STRIP. THEREAFTER, THE COATED STRIP PASSES THROUGH A HEATING STATION WHERE IT IS HEATED BY MEANS OF ELECTROMAGNETIC INDUCTION. A HOOD SURROUNDS THE INDUCTION HEATING MEANS SO THAT THE VAPORIZED SOLVENTS AND OTHER FUMES ARE PREVENTED FROM PASSING INTO THE ATMOSPHERE AND OVER THE COATED METAL STRIP DOWNSTREAM OF THE HEATING STATION. A HOOD IS PROVIDED WITH CONDENSING MEANS TO CONDENSE THE VAPORIZED SOLVENTS AND TO PERMIT RECOVERY OF THE CONDENSED SOLVENTS, AND IS ALSO PROVIDED WITH AN AFTERBURNER TO BURN UP ANY UNCONDENSED VAPORS OR GASES TO PREVENT CONTAMINATION OF THE ATMOSPHERE. A SERIES OF COOLED ROLLERS ARE PROVIDED DOWNSTREAM OF THE HEATING MEANS TO NOT ONLY ACT AS CONVEYORS FOR THE STRIP, BUT ALSO AS PROGRESSIVE COOLING MEANS TO COMPLETE THE CURE OF THE COATING.
Inventors
- 👤 Leroy O Swartz
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |