A round filter element has a filter medium body with a wall to be flowed through by a fluid to be purified radially relative to a longitudinal axis of the filter medium body. The filter medium body has a longitudinally extending cross-sectional shape in a direction transverse to the longitudinal axis. The filter medium body has a first end face and a second end that are axially oppositely positioned relative to each other in a direction along the longitudinal axis of the filter medium body. A first end disk and a second end disk are arranged at the first and second end faces, respectively, and have the same cross-sectional shape. The filter medium body has a twist by being twisted about the longitudinal axis such that the axially oppositely positioned first and second end faces of the filter medium body are angularly displaced relative to each other.

A round filter element is provided with an elongate filter medium body with a wall structure flowed through by a fluid to be purified in a flow direction radially relative to a longitudinal axis of the filter medium body. A seal support for a sealing element is arranged adjacent to a radially outwardly positioned outer wall of the wall structure of the filter medium body and adjacent to an end face of the filter medium body. The seal support has across a major portion of its circumference a constant radial spacing relative to the outer wall of the wall structure of the filter medium body. The seal support has at least one radially inwardly oriented indentation located at a longitudinal side of the filter medium body and provided with a reduced radial spacing relative to the outer wall of the wall structure of the filter medium body.

A round filter element has a filter medium body flowed through by a fluid to be purified in radial direction relative to a longitudinal axis of the filter medium body. The filter medium body radially encloses an inwardly positioned flow space. An end disk is arranged at an end face of the filter medium body. The end disk has a shaped body axially delimiting the inwardly positioned flow space. The end disk has a sealing disk arranged externally at the shaped body, wherein the sealing disk covers the shaped body and the end face of the filter medium body. The shaped body has a receiving depression that is flow-tight relative to the inwardly positioned flow space. The sealing disk has a receiving opening aligned with the receiving depression of the shaped body. The receiving depression and the receiving opening can receive a support element of a filter housing.

An air filter, an air filter assembly, and method of installing the air filter into a housing of the air filter assembly are provided. The air filter includes an attachment portion and a lock tab. The lock tab is carried by and resiliently moveable relative to the attachment portion. The lock tab is located radially outward from the attachment portion and movable circumferentially about a central axis of the air filter. Another feature relates to using an end stop in a housing as a catch. Yet another feature relates to using a perforated end cap and capping such perforations with a housing seal.

In one embodiment, a material sorting system comprises: a suction gripper assembly, the suction gripper comprising: a body assembly that includes: an internal airflow passage configured to communicate an airflow between an airflow application port positioned at a first end of the body assembly and a gripping port positioned at the opposing second end of the body assembly; a cup fitting attached to the gripping port; a suction cup secured to the cup fitting; an attachable filer inserted into the suction cup and fastened to the cup fitting; and a mounting assembly, wherein the mounting assembly includes one or more mounting points for pivotally attaching the suction gripper assembly to a sorting robot of the material sorting system.

A valve filter used for inflatable having infill inside. The valve filter has a filter body to stop the infill from escaping from the inflatable, and a patching sleeve to be attached on the inflatable or air valve of the inflatable.

Present embodiments relate to an air filter adapter for use with open style engine air filters. More particularly, but without limitation, present embodiments relate to a filter adapter having a hydrocarbon trap positioned within the adapter.

An air filtration cassette extending in a length direction between a first end and a second end, related to an intended air flow direction from the first end to the second end during use, the air filtration cassette comprising a filter material disposed between an outer boundary surface and an inner boundary surface, the air filtration cassette having an interior open space encompassed by the inner boundary surface and the filter material, and having an opening arranged at one end of the open space and being closed at the other end thereof, an average distance between said inner boundary surface and said outer boundary surface at said second end being larger than an average distance between said inner boundary and said outer boundary at said first end, the average distance between said inner boundary surface and said outer boundary surface being the average of all distances between the inner boundary surface and the outer boundary surface in a direction perpendicular to said length direction at a selected position along the length of the air filtration cassette; an air filter and a filter arrangement.

The invention relates to a filter cartridge for removing impurities from a dirty gas flow to be filtered, comprising a cylindrical filter element made from filter material, a filter insert inserted in the filter element, an inner space formed between the filter element and the filter insert, with the filter material being designed for being cleaned when a compressed air flow is applied against a flow direction of the dirty gas flow, and a base body of a flow guiding device having a surface designed for guiding the compressed air flow, wherein the base body has a distal end zone which is prepared for being completed by an end piece separate from the filter cartridge and mountable to an external housing for flow guiding the compressed air flow. Further, the invention relates to a centering device, a filter unit, a method for assembling and a method for cleaning said filter cartridge.

A hollow filter element, including: a filter medium (64) for filtering the fluid, the filter medium circumferentially surrounding an element interior space (72) in relation to an element axis (32), forming a conical-oval round filter element; wherein the hollow filter element (18) includes: at least at one outer face facing away from the element interior space (72) at an end face (66); at least one support element (78) configured to support the hollow filter element (18) at a housing-sided support section (42) of a filter housing (12); and at least one fluid passage (81) arranged at the end face (66) in the center of the at least one support element (78), the at least one fluid passage connected to the element interior space (72) for connecting a secondary fluid line connector (45) of a housing-sided secondary fluid line (47) and/or for receiving a housing-sided positioning dome (245).