Abstract: Apparatus and method providing efficient cleaning of various surfaces. The apparatus including a collector and a controller. The collector having an inlet conduit, a vacuum pump, a first valve, a second valve, a tank, and a separator. The inlet conduit connects to an inlet aperture of the separator, the vacuum pump connects to an outlet aperture of the separator, the first valve regulates flow between a drain aperture of the separator and an inlet aperture of the tank, and the second valve regulates flow through a drain aperture of the tank. One or more filters may filter flow between the separator and the vacuum pump. The controller may be programmed to, upon sensing a full tank, selectively close the first valve and open the second valve and, after the passage of a selected period of time, selectively close the second valve and open the first valve. The collector and controller may provide an integrated, compact cleaning system that supports continuous operation.

Abstract: Bracket destined to be mounted on a wall to extend therefrom and so designed that a separately manufactured material in the form of sheets, such as a glass wool mat, is suspended on the bracket by pressing the material against the bracket and causing the material to be pierced by the bracket. The bracket is made out of bent wire (121, 122).

Abstract: A process and an apparatus for purifying a stream of mechanically comminuted material as well as for enriching fine ores and other minerals uses mechanical sorting. The thickness of the material stream is enlarged by shaking and an upper and a lower layer containing bigger or lighter and smaller or heavier particles, respectively, form due to the effect of gravity on the material stream. The layers are separated by the edge of a tube, whereupon the upper layer leaves the apparatus through the tube. A preferably exchangeable or liftable and lowerable disc deflects the path of the lower layer of the material stream in a meander-like or winding manner to controllably brake the speed of that material stream.