Cutlery
Patent
1976-05-05
1978-04-11
Lutter, Frank W.
Cutlery
55272, 55302, 55350, 55467, 55482, 55487, 55DIG32, 141 67, 141 90, 141286, 141392, 423261, B65G 5360, B01D 3502
Patent
active
040836070
ABSTRACT:
A gas transport system for powder has a delivery pipe having an end portion of porous material having a pore size smaller than the particles of the powder. The porous end portion is surrounded by a jacket in which a vacuum is drawn to draw off transport gas and reduce filter capacity which would otherwise be required to remove it. Pulses of pressure are periodically introduced into the jacket to clear particles from the inside of the porous end portion. The vacuum is drawn in the jacket through a vacuum line containing a constriction through which a nozzle discharges high pressure gas at intervals to provide the pulses of pressure in the jacket. This system is particularly effective when used in the production of uranium oxide.
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Lutter Frank W.
Prunner Kathleen J.
Tailer Peter L.
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