Patent ID: 7927188

Claim:
A micro-abrasive blasting device, comprising: a chamber having a side wall, a first end wall at one end of the chamber and a second end wall at an opposite end of the chamber; a quantity of abrasive powder disposed within said chamber; a plurality of gas-receiving ports in one of the first and second end walls; a plurality of delivery conduits disposed within the chamber and extending in fluid communications from said gas-receiving ports to delivery conduit outlets in the chamber and directed towards said abrasive powder for providing air from external the chamber to within the chamber; a discharge port in one of the first and second end walls; and a discharge conduit elongated from a discharge conduit inlet to a discharge conduit outlet and extending in fluid communications through said discharge port external to the chamber; wherein said delivery conduits have different lengths within the chamber and said delivery conduit outlets support at least two unique positions with respect to said abrasive powder disposed within the chamber.