Patent ID: 8172645
Filing Date: 2012-05-08
Classification: B24C

Abstract:
1. A particulate material blasting apparatus comprising a particulate material storage reservoir adapted to feed particulate material into a particulate material dosing device, the dosing device comprising: a dosing chamber having a base, a material receiving side and a material delivery side; a feed conduit adapted to receive material from the particulate material reservoir and feed the material onto a base of the dosing chamber at a receiving side of the dosing chamber; a delivery conduit formed in the dosing chamber at delivery side of the dosing chamber; and a rotor rotatably mountable with the chamber, the rotor comprising a series of scooping pockets mounted along a circumference of the rotor, wherein the rotor is disposed within the dosing chamber such that upon rotation the pockets scoop-up material from the base of the dosing chamber and deliver it up and around to the delivery side of the dosing chamber where it falls into the delivery conduit, wherein the base is disposed with respect to the feed conduit such that material delivered onto the base from the feed conduit will not spill into the delivery conduit, and wherein the blasting apparatus further includes an air pressure equalisation conduit adapted to provide pressure equalisation between the storage reservoir and the dosing chamber.