B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
32/17.1
B05B 5/03 (2006.01) B05B 7/06 (2006.01)
Patent
CA 1164646
NOZZLE ASSEMBLY FOR SPRAY COATING SYSTEMS Abstract of The Disclosure An air atomizing nozzle assembly for spray coating systems such as an electrostatic spray gun is disclosed. The nozzle assembly includes an air cap having a central bore which surrounds a fluid tip nozzle. The bore has a plurality of uniformly dimensioned axially aligned gas flow passages evenly spaced about its circumference and a plurality of radially inwardly extending ribs therebetween. The ribs engage the out- side surface of the fluid tip nozzle to positively align its center axis on the axis of the central bore. The air cap and nozzle tip thus cooperate to form a plurality of uniform gas flow passages around the nozzle thereby producing a finely atomized uniform spray pattern of coating material emitted from the fluid tip. In a preferred embodiment of the invention, the gas flow passages and ribs are formed in a metal element inserted in a center bore in the air cap. The metal element is so dimen- sioned that the ribs make a press fit with the fluid tip to positively align it. The air cap is retained in a one-piece resilient retaining ring by snapping the air cap- into position over an annular lip of the ring. The air cap and retaining ring form a seal which prevents control air from escaping to the atmosphere.
387211
Corporation Nordson
Macrae & Co.
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