Process of coating particles with metals
Abstract
Abstract A PROCESS AND APPARATUS FOR SIMULTANEOUSLY AND UNIFORMLY PLATING NUMEROUS PARTICLES OF SMALL DIAMETER. THE APPARATUS COMPRISES A COLUMN CONTAINING PLATING SOLUTION FLOWING VERTICALLY THERETHROUGH. UPPER AND LOWER TRANSVERSE SCREENS BORDER THE INSIDE DIMENSIONS OF THE COLUMN INTERIOR OF THE PLATING SOLUTION AND THEREBETWEEN CONFINE THE PARTICLES BEING PLATED. VIBRATIONAL ENERGY IN THE RANGE OF 20 TO 20,000 CYCLES PER SECOND IMPARTED TO THE PLATING SOLUTION STRIPS TO PARTICLES BEING PLATED OF THE GASEOUS BY-PRODUCTS OF PLATING THEREBY PREVENTING GAS BLINDING OF THE PLATING REACTION. PLATING SOLUTION AS VERTICALLY FLOWING THROUGH THE PLATING SEGMENT MOVES THOSE PARTICLES HAVING LOW PLATING SIZE AND DENSITY INTO ZONES OF THE SEGMENT WHERE PLATING OCCURS AND PERMITS THOSE PARTICLES HAVING THE DESIRED PLATING DEPOSIT THEREON TO SETTLE INTO ZONES OF THE SEGMENT WHERE PLATING IS ARRESTED.
Inventors
- 👤 James A Patterson
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |