A pleated filter element comprising a pleated filter media comprising a plurality of oppositely-facing pleats with a pleat direction and with a plurality of upstream and downstream pleat tips and pleat valleys, wherein the pleated filter media comprises two corrugated edges and two noncorrugated edges. The first (second) corrugated edge of the pleated filter media comprises an edge dam of hardened adhesive that occupies the upstream and downstream pleat valleys at a location laterally inwardly proximate the first (second) corrugated edge and that extends along an entire longitudinal extent of the pleated filter media. The pleated filter media is a multilayer media comprising an organic polymeric nonwoven web, that exhibits a Percent Penetration of less than 5, laminated with a fiberglass prefilter layer that is disposed upstream of the primary filtration layer and that exhibits a Percent Penetration of greater than about 70.

Provided is a filtration device that can increase a filtration treatment amount by suppressing clogging of a filtration filter. A filtration device according to the present invention includes: a filtration filter that includes a filter that filters a filtration target contained in a fluid, and a frame that holds the filter; a support structure that holds the frame such that the filter is bent; and a fluid supplying unit that supplies the fluid with the filter being in a bent state.

An air filter including a base and a first and second frame element is disclosed. Each frame element is coupled to the base. The frame elements have an oscillating shape having a first portion relatively close to the base and a second portion relatively farther from the base. A filter element generally follows the oscillating shape of the frame elements. An air filter system is also disclosed. The air filter system can include the air filter and an air filter container. The air filter container contains the air filter and directs air through the air filter in a predetermined direction. An air filter is disclosed including a support structure and an oscillating shaped filter element attached to the support structure. The oscillating shape increases the air filter surface area for a given volume.

According to the present disclosure, features, components and techniques useable for providing air cleaner arrangements are provided. Many of the features relate to an axial seal arrangement provided on a filter cartridge. A typical filter cartridge, for use with these features, is a filter cartridge having opposite flow ends. Example media arrangements that fit this characterization are described. Seal arrangements provided with an axial housing sealing engagement surface are shown. A seal arrangement is provided. Also, air cleaner assemblies having advantageous features therein are provided. Further, air cleaner housings are described, with selected, preferred features for engagement with filter cartridges.

A filtering system may include a holder and an exchangeable filter element. The filter element may include a first end plate, a second end plate, and a filtering material arranged between the first end plate and the second end plate that separates a filtered zone from an unfiltered zone. The second end plate may protrude beyond the filtering material. The filtering system may further include at least one filtered opening and at least one unfiltered opening, and the at least one filtered opening may be disposed in the filter element. The filter element may lie detachably on the holder, and the holder together with the second end plate, the filtering material and an outer wall may enclose the unfiltered zone.

A mobile earth working machine (10), for example a road milling machine, recycler, or surface miner, includes: a working apparatus (12) for material-removing working of a region of a substrate (U); and an extraction device (40) that is embodied to extract dust-laden air from at least one machine region at at least one extraction location (46), and to exhaust extracted air at a discharge location (50) different from the extraction location (46),
the extraction device (40) comprising a filter apparatus (42) arranged along an operational flow path from the at least one extraction location (46) to the discharge location (50), the filter apparatus (42) encompassing: a filter housing (54); a filter element (52) received in the filter housing (54), the filter element (52) being embodied to remove dust particles from the air flowing through the filter apparatus (42). The filter apparatus (42) comprises a deformation actuator arrangement (44, 76a) that interacts force-transferringly with at least one wall (86) of the filter housing (54) in such a way that by actuation of the deformation actuator arrangement (44, 76a), the at least one wall (86) of the filter housing (54) is deformable orthogonally to its wall surface.

This invention is a smart face mask for air filtration with a transparent mouth-covering portion, an active air filtration system which filters both air inflow and air outflow, an environmental or biometric sensor, and a smart control mechanism wherein the operation of the active air filtration system is automatically adjusted based on analysis of data from the sensor.

The present invention relates to a collection apparatus for collecting particulate matter generated due to friction between a rotor and a brake pad in a brake system of a transport facility, the collection apparatus including a first collector configured to surround a portion of an outer side surface of the rotor, an upper collector configured to surround a portion of an outer peripheral surface of the rotor, and a second collector configured to surround a portion of an inner side surface of the rotor, wherein the first collector and the second collector are made of porous ceramic foam. According to the present invention, particulate matter generated due to friction between a rotor and a brake pad in a brake system of a transport facility can be efficiently collected, and by reducing the amount of particulate matter generated when braking a transport facility, air pollution can be prevented.

An air filtering cover is configured to engage over an infant carrier to filter air communicated into an interior cavity thereof. A cover body has a top wall having a pocket with two sidewalls and a filter element and form a flowpath for air communicating through the body and filter to remove dirt, dust, and pathogens from air reaching the occupant of the interior cavity. The filter may be replaceable within a pocket formed in the cover body. A gauge strip may be positioned on the filter which changes in appearance when the filter needs replacement.

Provided is an adsorption filter structure, and more specifically, an adsorption filter structure with easy detachment and increased filter efficiency. The adsorption filter structure includes a filtration unit passing external air through an internal space in a filtration direction, and filtering the external air, an external vent and an internal vent, and the helmet to which the adsorption filter structure is applied includes a protection unit into which the adsorption filter structure is interpolated and the external air entrance hole is formed, a neck packing part, a nose cast, and an exhalation port. Accordingly, the helmet, including the adsorption filter structure, is designed to be easily detached without protrusion so that a wearer's field of vision is secured, wherein the adsorption filter structure that is not restricted in actions during work is applied. The adsorption layer, the filtration layer, and the shielding layer are stacked therein so as to exhibit optimal efficiency, and thus the filtration efficiency is increased.