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Vacuum ejector pumps

Title: Vacuum ejector pumps.
Abstract: Disclosed herein is a vacuum ejector pump operated by compressed air which flows in and out at high velocity, thus creating negative pressure in an outer surrounding space (S). The vacuum ejector pump includes a cylindrical nozzle body (2) and a cover (10). The nozzle body has at a predetermined position thereof an opening (3). One or more mounting nozzles (4, 5) are coaxially installed in the nozzle body and are visible through the opening (3). Holes (8) are formed in the wall of the nozzle body to allow the pump to communicate with the surrounding space (S). The cover functions to cover the opening of the nozzle body. Further, the pump includes flexible valve members (9) to open or close the holes, and fastening means (13, 14) to fasten the nozzle body to the cover. ...

- Dallas, TX, US
Inventor: Ho-Young Cho
USPTO Applicaton #: #20070148009 - Class: 417174000 (USPTO) - 06/28/07 - Class 417 
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Related Patent Categories: Pumps, One Fluid Pumped By Contact Or Entrainment With Another, Jet, Successive Entrainment Of Pumped Fluid
The Patent Description & Claims data below is from USPTO Patent Application 20070148009, Vacuum ejector pumps.

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