B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
B05B 9/043 (2006.01) B05C 19/04 (2006.01)
Patent
CA 2520691
-20- An airless spray pump system and method for spraying a binder solution having suspended particles which are non-abrasive for coating a product therewith is described. A reservoir contains a supply of the binder solution and is continuously mixed to maintain the solution in a homogeneous state. An inlet check valve is connected to the reservoir and the check valve has an outlet port which is connected to a pump. The check valve is operated by an upstroke of a piston of the pump to draw a volume of a solution through the check valve and into the pump while the pump supplies, under high pressure, a solution in a transfer chamber thereof to a pressure control unit of a spray apparatus. When the piston of the pump is in a return stroke, it forces the check valve to close under pressure and simultaneously operates a transfer check valve of the pump to open to transfer solution into the transfer chamber and forces a portion of the solution to the pressure control unit. When the solution is displaced through the inlet check valve and the transfer check valve of the pump, it causes a washing action of the parts in contact with the solution to prevent particles in the solution from sticking or settling down on these parts.
Galvatech 2000
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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