Process for preparing ceramic clay granules
Abstract
Abstract CLAY PARTICLES OF MICRON OR SUBMICRON SIZE AND CONTAINING 5 TO 10 PERCENT MOISTURE ARE FED INTO ONE END OF A CONFINING PASSAGE BY APPLYING SHEAR FORCES THERETO,UNDER PRESSURE, IN A DIRECTION TRANSVERSE TO THE PASSAGE, WHICH COMPACTS THE CLAY BY ORIENTING THE MICROSOPIC CLAY "FLAKES" SO THAT THEY LIE SUBSTANIALLY IN PARALLEL DIRECTION, AND SUCH ORIENTATION IS MAINTAINED AS THE CLAY IS PUSHED ALONG THE PASSAGE WHICH IS OF UNIFORM SECTIONAL AREA AND SHAPE. AT THE OTHER END OF THE PASSAGE THE COMPACTED CLAY IS DEFLECTED RADIALLY OUTWARDLY IN ALL RADIAL DIRECTIONS TO BREAK THE MASS UP INTO CHUNKS OR BODIES WITHOUT DISTRUBING THE ORIENTATION OF THE FLAKES IN THE BODIES. THESE CHUNKS ARE THEN FURTHER BROKEN UP INTO GRANULES WITHOUT DISTURBING THE INTERIOR PARTICLE ORIENTATION FOR USE IN FORMING DESIRED SHAPES BY ISOSTATIC PRESSING.
Inventors
- 👤 Paul H Wendt
- 👤 David F Latta
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |