Pneumatic Suction Surface Blasting Apparatus With An Improved Media Delivery Regulating System

Author:  Craig C. Fring
Source:  US Patent 5,947,800 September 7, 1999
Doc ID:  1999077
Year of Publication:  1999
Abstract:  
An apparatus for cleaning or treating by blasting of a surface which includes an enhanced media delivery regulating system which includes supplying high pressure air to a suction gun and using this to draw blasting media and ambient pr low pressure conveying air thereinto for high pressure axpulsion therefrom.