VACUUM EJECTOR PUMP
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United States of America Patent
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Issued Date -
Feb 29, 2024
app pub date -
Apr 4, 2022
filing date -
May 18, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a vacuum ejector pump including a plurality of nozzles, which are assembled, and activated by compressed air passing through the nozzles at a high speed to generate a negative pressure in an outer surrounding space. The pump of the present invention includes an intermediate nozzle, a first nozzle on which a front-cover part inserted to an outer circumference of one end of the intermediate nozzle is formed, and a second nozzle on which a rear-cover part inserted to an outer circumference of the other end of the intermediate nozzle is formed. Here, the intermediate nozzle is disposed between the first nozzle and the second nozzle, and the intermediate nozzle, the first nozzle and the second nozzle constitute an ejector main body. The surrounding space communicates with each of the nozzles through a through-hole defined in a sidewall of the ejector main body and a slot defined between the nozzles. The through-hole is opened and closed in a sealing manner by a valve member having a properly designed shape.
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