Pneumatic powder ejector
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United States of America Patent
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-
Feb 28, 1989
Grant Date -
N/A
app pub date -
Jan 3, 1986
filing date -
Jan 4, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset in relation to the downstream end of the venturi. The injection stage includes a nozzle (22), an injection chamber (36) and a diffuser (38). The stages are located within a coaxially of the body of a tubular ejector. The nozzle includes a path for powder and primary gas between the suction chamber and diffuser, and is formed to provide a flow path of reduced dimension to communicate a secondary or entrainment gas between the diffuser and injection station.
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