Abstract: An air cleaner assembly includes a housing having an outer wall defining an air flow inlet, an air flow outlet and a hollow interior section. The housing is openable for service access to the interior section. A serviceable and selectively removable filter cartridge is positioned in the housing. The filter cartridge includes filter media surrounding an open central interior. A pulse jet distribution arrangement communicates with the interior of the housing and includes a device configured to direct a pulse of compressed gas into the interior of the filter cartridge. An evacuation valve arrangement is mounted to the housing to receive ejected dust from the filter cartridge and direct the received ejected dust out of the housing. The valve arrangement includes a frame, a blocking element mounted for reciprocation in relation to the frame and a biasing element for urging the blocking element into a closed position.

Abstract: An air cleaner assembly includes a housing having an outer wall defining an air flow inlet, an air flow outlet and a hollow interior section. The housing is openable for service access to the interior section. A serviceable and selectively removable filter cartridge is positioned in the housing. The filter cartridge includes filter media surrounding an open central interior. A pulse jet distribution arrangement communicates with the interior of the housing and includes a device configured to direct a pulse of compressed gas into the interior of the filter cartridge. An evacuation valve arrangement is mounted to the housing to receive ejected dust from the filter cartridge and direct the received ejected dust out of the housing. The valve arrangement includes a frame, a blocking element mounted for reciprocation in relation to the frame and a biasing element for urging the blocking element into a closed position.

Abstract: An air pre-cleaner for centrifugally ejecting heavier than air particulates from an air stream for use in an apparatus having an air intake includes an impeller assembly mounted for rotation with a wave washer. A two-part housing including first and second parts that are manually releasably securable together permits removal of housing part for cleaning of the pre-cleaner without the use of tools.

Abstract: A centrifugal particle separator includes a first vane assembly and a second vane assembly. The first vane assembly includes a centrally positioned hub, a collar encircling the hub and a plurality of first vanes. Each first vane can have an inner end connected to the hub and an outer end connected to the collar, wherein a trailing edge of at least one of the plurality of first vanes can extend past an edge of the collar. The second vane assembly includes a centrally positioned hub, a collar encircling the hub and a plurality of second vanes circumferentially disposed about the hub. Each second vane can have an inner end connected to the hub and an outer end connected to the collar, wherein a leading edge of at least one of the plurality of second vanes can extend past an edge of the collar. When the first and second vane assemblies are secured together, at least one of the plurality of first vanes protrudes into the second vane assembly.

Abstract: A centrifugal particle separator includes a first vane assembly and a second vane assembly. The first vane assembly includes a centrally positioned hub, a collar encircling the hub and a plurality of first vanes. Each first vane can have an inner end connected to the hub and an outer end connected to the collar, wherein a trailing edge of at least one of the plurality of first vanes can extend past an edge of the collar. The second vane assembly includes a centrally positioned hub, a collar encircling the hub and a plurality of second vanes circumferentially disposed about the hub. Each second vane can have an inner end connected to the hub and an outer end connected to the collar, wherein a leading edge of at least one of the plurality of second vanes can extend past an edge of the collar. When the first and second vane assemblies are secured together, at least one of the plurality of first vanes protrudes into the second vane assembly.