Patent ID: 6562138
Filing Date: 2003-05-13
Classification: B05B

Abstract:
A spray coating device for coating an object with a powder, said device comprising:a powder duct (8); an electrode support (24) mounted in a downstream end zone of the powder duct; an electrically insulating, integral tubular segment (26) constituting a segment of the powder duct, said tubular segment having a rear, upstream tubular segment (28) and a front, downstream, adjoining tubular segment (30), said front segment (30) having an outside diameter larger than that of the rear adjoining segment (28 ) thereby defining a rearward facing offset (32); and an electric contactor (34) for setting up contact between a high-voltage conductor (20) and an electric connecting line (40) running through the electrode support (24) to at least one high-voltage electrode (22) that is supported by the electrode support, the contactor (34) being mounted on the rearward facing offset (32); wherein an axial distance between the electric contactor (34) at the rearward facing offset (32) and a rear end face of the rear segment (28) is at least 1.5 cm; and wherein a channel (44) is formed in the rearward facing offset (32) to annularly enclose, while being radially spaced from, the powder duct (8) , said channel communicating a compressed-air supply duct (46) and an air duct (48) running through the electrode support (24) for feeding compressed air to the electrode (22).