Abstract: An electrostatic spray coating assembly (10) for atomizing electrically conductive material comprises a rotary atomizer spray head (12) having an annular atomizing spraying edge (14). An external housing (22) supports the spray head (12) and a feed line (18) supplies the material from a supply system to the spraying edge (14) of the spray head (12). The feed line (18) and the material supplied thereby and the spray head (12) are electrically grounded. Three needle-shaped charging electrodes (36) are in spaced relationship circumferentially at uniform angular intervals with respect to the spray head (12). The charging electrodes (36) are connected to a source of high voltage potential for producing an electrical field charging the conductive material. The charging electrodes (36) are positioned from the spraying edge (14) of the spray head (12) a predetermined radial distance (R) at least twice the diameter (d) of the spraying edge (14) of the spray head (12).

Abstract: A programmed controlled industry robot for the treatment of work pieces having movable parts (24) to be moved prior to treatment comprises a support arm (15) swivelable three dimensionally and a swivel head (17) affixed at the free end of the support arm (15). The swivel head (17) carries a tool and has a plurality of axes and being rotatable around the axes. The axes of the swivel head (17) are loaded with considerably smaller forces than the swivel axes of the support arm (15). A support member (25) moveable with the support arm (15) grips one of the moveable parts (24) of the work piece and moves the work piece into an open position. The support member (25) serves for the lifting of the moveable part (24) of the work piece and is attached to the support arm (15) in such a manner that the forces acting on the support member (25) do not load any of the axes of rotation of the swivel head (17).

Abstract: The invention relates to a nozzle for a paint spraying device having a radially inward valve needle that is connected in a coaxial arrangement with the nozzle. A radially outward paint supply pipe is connected to the valve at one end and a paint source at the other. The valve needle is hollow for paint supply purposes and has a forwardly inclined bore in its tip which opens axially in front of the valve into an annular chamber created between the valve needle and the supply pipe.

Abstract: A rotatable, electrically chargeable, substantially bell-shaped sprayer for producing a paint mist from an axially fed liquid paint such as 2-component lacquers, for an apparatus for the electrostatic application of sprayed charged particles of the paint mist onto an article, the sprayer having an annular coaxial flowover surface for the liquid paint and an annular lip which projects axially forwardly on a radial and axial outer edge portion of the flowover surface. The lip is provided on its radial inside with grooves for channeling the flow of the liquid paint, the grooves being uniformly distributed on the circumference and extend approximately in the direction of the flow of the liquid paint. The grooves terminate open at a spray position of the lip and intersect in pairs.