Antipickup roll construction and utilization for plating lines
Abstract
Abstract AN AFTER-POSITIONED GUIDE ROLL FOR A CONTINUOUS GALVANIZING LINE HAS A SPECIALLY CONSTRUCTED COMPOSITE STRUCTURE COMPRISING A SUBSTANTIALLY SOLID MAIN BODY AND A SURFACETREATED PROTECTIVE SLEEVE THEREON WHICH IS RESISTANT TO PICKUP OF HOT COATING MATERIAL SUCH AS ZINC OR AN ALLOY OF ZINC AND ALUMINUM THAT IS CARRIED ON THE SURFACE OF A WORKPIECE. THE SLEEVE IS GIVEN A SPECIAL HEAT TREATMENT AND THEREAFTER PROVIDED WITH A HIGHLY ADHERENT, RELATIVELY FINELY TEXTURED RED RUST (FERRIC OXIDE) ON ITS OUTER PERIPHERAL SURFACE, IS SECURELY-MOUNTED IN POSITION ON THE MAIN BODY, AND HAS A GROUP OF LONGITUDINALLY SPACED-APART, ANNULAR GROOVE PORTIONS THAT DEFINE FLUID FLOW PASSAGEWAYS ABOUT THE ROLL.
Inventors
- 👤 John T Mayhew
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |