Patent ID: 6091042
Filing Date: 2000-07-18
Classification: B05B,B23K

Abstract:
In an arc spray extension apparatus comprising a spray gun body, a pair of tubular wire guides held convergingly by the gun body so as to guide two metal wires to a region of contact at tips of the wires, a wire feeding mechanism operatively connected to feed the wires respectively through the wire guides, and a gas jet member attached to the gun body, the wire guides having guide axes defining a guide plane, and the wires being receptive of an arc current to effect an arc and thereby molten metal at the wire tips, wherein the jet member comprises a projection extending forwardly from the gun body, the projection being offset laterally from the guide plane and having a primary orifice therein receptive of compressed gas to issue a primary gas jet directed laterally to the region of contact for atomization of the molten metal and production of a spray stream thereof at an angle to the guide plane substantially greater than zero; the improvement comprising the primary orifice having a cross-shaped and the projection further having a plurality of at least four secondary orifices arcuately spaced about the cross-shaped primary orifice, the secondary orifices being receptive of compressed gas to effect secondary gas jets nominally parallel to the primary jet, whereby the spray stream is constricted by the secondary gas jets.