Gas and liquid contact apparatus – Contact devices – Rotating
Reexamination Certificate
2005-11-28
2011-12-20
Bushey, Charles (Department: 1776)
Gas and liquid contact apparatus
Contact devices
Rotating
C261SDIG071
Reexamination Certificate
active
08079573
ABSTRACT:
Apparatus for aerating waste water, provided with a container for waste water and a rotor which is rotatable about a substantially vertical axis (1) and the downward directed part of which can reach into the waste water, which rotor comprises blades (4) having surfaces which are orientated substantially radially and axially, wherein a surface (12) curved in the direction of rotation of the rotor is present close to the upper edge (8) of a blade (4), and wherein the curved surface close to the upper edge forms an angle of between 10° and 60° with the vertical plan of the blade.
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European Search Report for co-pending International Application No. PCT/NL2005/000815; 2 pages, 2007.
Bushey Charles
Meyertons Eric B.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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