Abstract: An improved multistage particle separator apparatus including a cyclone separator, a linear separator, a pair of vertical channels carrying exit airstreams from said linear separator, and a pair of air filter chambers on each side of said linear separator. A portable multistage separator including integral means for collecting the separated particulate material and for supporting the separator during movement.

Abstract: An industrial vacuum loader comprises an enclosed hopper into which particulate matter is drawn through a loading hose. The hopper is connected by a suction hose to the lower intake port of a bag house and the upper outlet port of the bag house is connected by a transformation hose to the suction port of an engine-driven positive displacement rotary blower. The bag house comprises an upper chamber containing filtration bags and a lower dust collection chamber in which dust filtered from dust-laden air passing through the bag house is collected.

Abstract: An industrial sweeper has a filter unit in the debris hopper with the filter unit comprising rows of cartridges having pleated paper filter elements that are cyclically cleaned by reverse jet pulses of air without interrupting the filtering action by the main blower.