Method of forming channel plates
Abstract
Abstract A CHANNEL PLATE IS PRODUCED FROM GLASS POWDER BY EXTRUDING THE POWDER WITHIN A CANISTER HAVING A NUMBER OF DISPOSABLE RODS EXTENDING PARALLEL TO EACH OTHER WITHIN THE POWDER. THIS FORMS A BAR HAVING A SOLID GLASS CORE IN WHICH THE RODS ARE EMBEDDED. THE RESULTANT BAR IS CUT LENGTHWISE INTO SEGMENTS WHICH ARE TREATED TO REMOVE THE CANISTER MATERIAL, PACKED SIDE BY SIDE INTO A SECOND EXTRUSION CANISTER, AND THEN RE-EXTRUDED TO BOND THE SEGMENTS TO EACH OTHER. THE FINAL BAR RESULTING FROM THIS EXTRUSION IS THEN CUT INTO CHANNEL PLATES OF THE DESIRED THICKNESS, AFTER WHICH THE DISPOSABLE RODS ARE REMOVED FROM THE PLATES. THIS LEAVES A NUMBER OF CHANNEL PLATES HAVING AN EXTENSIVE NUMBER OF ORDERED CHANNELS EXTENDING AXIALLY THROUGH THEM.
Inventors
- 👤 James G Hunt
- 👤 Gerald I Friedman
Bibliographic Details
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |