Patent ID: 7297048

Claim:
A particulate media dispensing system, comprising: a tank for containing a supply of particulate media; a modulator upstream of said tank for modulating the pressure of fluid flowing therethrough; a mixing chamber adjacent to said tank; an orifice for delivering particulate media from said tank into said mixing chamber; a fluid inlet for delivering fluid from said modulator to said tank; a bypass tube disposed adjacent to said fluid inlet for receiving fluid from said fluid inlet and delivering said fluid into the tank; a fluid passage for permitting fluid from said fluid inlet to flow directly into said mixing chamber; a discharge port for delivering an fluid/particulate media mixture from said mixing chamber to a workpiece; and a fluid/particle flow control upstream of said tank, said fluid/particle flow control being located in a fluid flow passage disposed in parallel with said modulator, in order to permit changes in particle flow during operation of the system; wherein said bypass tube is interchangeable with other bypass tubes of various internal diameters, in order to control a maximum level of flow of particulate media to said mixing chamber.