Aspirator

Details Aspirator Aspirator

2008-01-02

2011-11-15

Lawrence, Jr., Frank (Department: 1776)

Gas and liquid contact apparatus

Contact devices

Rotating

C210S628000

Reexamination Certificate

active

08056886

ABSTRACT:
An aspirator includes a plurality aspirator tubes, each preferably extending at approximately 70 degrees from a central axis and including a fin extending a limited distance below the aspirator tube outlet. The design improves mixing and gas contact, yet has reduced power requirements, by using a plurality of debris-shedding, finned aspirator tubes to inject approximately 35% more air than the best prior art designs at the same rotational speed. Further, the aspirator of the present invention improves motor life by reducing the average current draw on the motor. The aspirator is useful in many applications, including sewage and wastewater treatment, oxygenation, fermentation, aeration, hydrogenation, oxidation, and oil-sand separation.

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International Preliminary Report on Patentability, Intl. Application PCT/US2009/030050. International Bureau of WIPO, Jul. 15, 2010.
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