Abrasive Blasting Apparatus

Author:  Bruce Nicholson, Ronald Davis
Source:  US Patent 5,195,280
Doc ID:  1993025
Year of Publication:  1993
Abstract:  
an apparatus for mixing spearately contained media such as would be used in a wet abrasive blasting operation comprises a receptable for a liquid/abrasive medium, a receptacle for a liquid, and a delivery line along which pressurized fluid is adapted to be fed. The receptacles communicate via pipes with the delivery line so that the liquid and the liquid/abrasive medium are entrained by the pressurized fluid. The receptacles communicate with each other via a hole to balance the fluid pressure system between them and a means is also provided to deliver pressurized fluid into at least one of the receptacles in order to substantially balance the fluid pressure system between the receptacles and the delivery line and to facilitate outflow of the liquid/abrasive medium and the liquid into the entraining fluid.