Patent ID: 8166912

Claim:
A powder spray coating discharge assembly for connection to an electrostatic spray coating gun, the electrostatic spray coating gun having a gun body, means for connecting to a supply of coating powder, means for supplying a voltage at a first, non-ground potential to a first electrical connection and means for connecting a second electrical connection to ground potential, the powder spray coating discharge assembly comprising: an electrically insulating spacer having means for connecting to the gun body, and a conduit for the passage of coating powder; a nozzle having means for connecting to the electrically insulating spacer and having an aperture for the discharge of coating powder; a discharge electrode located downstream of the discharge aperture of the nozzle and electrically connectable to the first electrical connection; and a counter electrode located between the discharge electrode and the portion of the electrically insulating spacer which is configured to engage the gun body, the counter electrode being electrically connectable to the second electrical connection.