Patent ID: 9434048
Filing Date: 2016-09-06
CPC Classification: B24C

Claim Text:
1. A method for operating an abrasive blasting apparatus, said method comprising the steps of: providing a blast pot storing abrasive blasting media and having a blast media outlet; providing a pneumatically actuated abrasive blast media valve; providing a source of pressurized gas; providing a proportional air valve; providing a hose having a blast nozzle at a distal end thereof, said blast media valve provided to control the passage of the abrasive blasting media through said blast nozzle; providing a main control unit comprising an electronic controller including an electronic control unit; fluidly connecting said abrasive blast media valve to said blast media outlet of said blast pot; fluidly connecting said source of pressurized gas fluidly to said abrasive blast media valve; fluidly connecting said proportional air valve with said blast media valve and said source of pressurized air upstream of said blast media valve, said proportional air valve providing variable gas pressure to said abrasive blast media valve; fluidly connecting said blast media valve to said blast nozzle located downstream of said blast media valve by said hose; fluidly connecting said main control unit to said blast media valve and said proportional air valve; said blast media valve comprising: said plunger being movable by said piston with respect to said blast media port between a fully closed position to a fully open position.