Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Reexamination Certificate
2006-11-21
2006-11-21
Popovics, Robert James (Department: 1724)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
C210S162000, C210S304000, C210S305000, C210S306000, C210S418000, C210S512100, C210S532200, C210S787000
Reexamination Certificate
active
07138048
ABSTRACT:
An apparatus for removing particulates from a wastewater stream includes a chamber having a wastewater inlet and wastewater outlet which promotes a generally horizontal wastewater flow. A grating is provided in the chamber between the wastewater inlet and the wastewater outlet having a screen size for preventing the passage of particulates having greater than the select effective diameter from the wastewater inlet into the wastewater outlet. The grating is vertically inclined relative to the direction of the wastewater flow. A baffle within the chamber is configured to cooperate with the grating to generate a vortex in the wastewater having a velocity component parallel to the face of the grating which urges particles trapped by the grating along the grating toward a surface of the wastewater to suspend particles in the wastewater as the wastewater flows between the wastewater inlet and the wastewater outlet.
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O'Connor Kelly
van der Tak Laurens
Wollmann Albert M.
CH2M Hill Inc.
Popovics Robert James
Swanson & Bratschun L.L.C.
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