Patent ID: 7727136

Claim:
An apparatus for centrifugally separating particles by both weight and size, the apparatus comprising: a rotating drum which rotates about a second rotating axis disposed substantially perpendicularly to a first rotating axis, wherein the rotating drum and the second rotating axis rotate about the first rotating axis, the rotating drum including: an inlet which injects a test material; at least one rotating plate extending substantially radially outward toward an inner surface of the rotating drum from the second rotating axis, the rotating plate having a plurality of at least one of a protruded portion and a recessed portion disposed on a surface thereof, the rotating plate receiving the test material on a surface thereof from the inlet, and wherein the plurality of at least one of a protruded portion and a recessed portion have substantially the same heights from a surface of the rotating plate; an outlet for discharging separated test material; and a detector which detects a signal from the surface of the rotating plate, wherein the detector includes a motor which enables the detector to move radially across the rotating plate.