B - Operations – Transporting – 24 – C
Patent
B - Operations, Transporting
24
C
51/6
B24C 3/00 (2006.01) B24C 7/00 (2006.01)
Patent
CA 1281550
TITLE: IMPROVED CONTROL SYSTEM FOR LIQUID PROPELLED ABRASIVE CLEANING ABSTRACT A liquid-propelled abrasive cleaning apparatus is disclosed including a nozzle for applying a high pressure stream of water and propelled sand particles to a surface to be cleaned. A pump is provided for furnishing water under high pressure to the nozzle. The pump is adapted to be driven by a pressurized fluid medium and has a discharge outlet. A first conduit is provided for connecting the disclosure outlet to the nozzle. A second conduit delivers the fluid medium to the pump. A normally closed valve is provided in the first conduit and a pneumatic actuator is provided for opening the valve. Control apparatus is associated with the nozzle for enabling pressure to be applied to the actuator to open the valve only when the nozzle is in use.
539150
Baker Bryce T.
Martin R. Craig
Woodson Jerry P.
Baker Bryce T.
Finlayson & Singlehurst
Martin R. Craig
Whitemetal Inc.
Woodson Jerry P.
LandOfFree
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