Abstract: An electrostatic liquid applicator; such as an oscillating disk paint gun, for spraying a liquid coating material such as paint or the like onto the surfaces of a wide variety of types of articles. The electrostatic liquid applicator includes a stationary bell, an oscillating drive shaft extending through the stationary bell and which is rotatably driven by an air-controlled drive system. An oscillating disk is fixedly mounted on the drive shaft towards the front side of the stationary bell so as to form a spray slot in a liquid plenum in cooperation with the front side of the stationary bell. The drive system includes a body portion which is located at the rear side of the stationary bell, and includes air supply ports and air exhaust ports and forms a sealed space with the rear side of the stationary bell. A drive member projects radially into this space and is anchored to the drive shaft for pivoting the latter between two end positions which are defined within a predetermined angle.

Abstract: A system for removing contaminants from a gas in an exhaust stack. A cone structure having a plurality of stacked cones is located in the exhaust stack in combination with a spray system including a water input pipe with a misting spray nozzle. Air or gas containing contaminants flows in the exhaust stack. The water from the nozzle system mixes with the air or gas to form a mist. The cones of the cone structure are stacked and held by rods to create slight changes in the flow direction of the mist. The flow of the gases drive the condensed liquid to the outside perimeter of the cones and to the inner wall of the stack or chimney where it is collected in a trough and removed.