Patent ID: 7905766

Claim:
A centrifugal projecting machine comprising: a housing, a driving means having a driving shaft disposed at a first side of the housing, a rotating impeller having a plurality of blades, the impeller being connected to the driving shaft of the driving means for rotation, a distributor disposed in an inner cylindrical space of the impeller so that it is concentrically arranged in relation to the driving shaft, the distributor having openings that are circumferentially disposed at substantially equal intervals, a control cage having an opening around a distal end thereof for dispersing shot, wherein a proximal end of the control cage is connected to a second side of the housing, opposite the first side, around an opening of an intake disposed at the second side, wherein the control cage is disposed with a clearance between inner ends of the blades and an outer surface of the distributor and extends over a length of the impeller, and a nozzle connected to the second side of the housing to supply the opening of the intake with shot, wherein a supporting member is disposed at a side of the impeller to support the rotating impeller during rotation thereof.