A Twist-interlocking Engine Housing and Air Filter System and Method is disclosed. The filter assembly provides unequaled ease of installation and removal, as well as superior sealing between the housing and the filter assembly. For installation, the user needs only to insert the filter into the housing and then give the filter assembly a one-quarter turn or less to lock the filter assembly into the housing. There are features within the filter base that snap-locks the filter in place to resist inadvertent loosening. Finally, the housing and filter are designed so that the outer flange of the filter base is recessed into the side of the housing in order to prevent the intrusion of unwanted grime and/or fluids.

A filter bondable to a grille is provided. The filter is fixable alone to the grille so as not to separate therefrom without using another element such as a hook and loop fastener. The filter is constituted by a filter body and ears integrally connected to the outer edge of the filter body. The filter is bondable to the grille by bringing the filer body into abutment with the front surface of the grille, and bending the ears relative to the filter body until the ears abut against the side surface of the grille. By forming the ears at the filter, and bringing the ears into abutment with the side surface of the grille so as to be bonded thereto, it is possible to increase the attachment strength of the filter relative to the grille, compared to conventional filters each constituted by only a filter body.

A filter assembly including a plurality of filter modules, wherein each filter module in the plurality of filter modules includes a frame, a filtration element coupled within the frame, and at least one mating feature. The at least one mating feature of each filter module is configured for selective engagement with the at least one mating feature of another filter module such that the plurality of filter modules are coupled together in a serial arrangement.

An improved device for collecting particulate matter suspended in the ambient air is disclosed comprising a container extending between an open first end and a closed second end defining a container interior. A container output communicates with a container interior located proximate the closed second end of the container. A filter cassette comprising a collection filter is permanently affixed to a filter holder. A retainer having a retainer input retains the filter cassette between the retainer input and the container output. An output connector connects the container output to a low pressure source for drawing ambient air into the retainer input for enabling the collection filter to collect particulate matter suspended in the ambient air entering the retainer input. Preferably, the filter holder and the filter are disposable.

The technology disclosed herein relates to a tank vent having a housing and a pleated, vapor-permeable microporous membrane. The housing defines a first vapor passageway configured for direct communication with a tank interior and a second vapor passageway configured for direct communication with the atmosphere. The housing also defines a tank mounting surface is mountable to a tank housing and a media mounting surface. The microporous membrane is sealed to the media mounting surface and defines a tubular structure such that the first vapor passageway and the second vapor passageway are in communication through the microporous membrane. Other embodiments including methods are also disclosed.

An air cleaner assembly is disclosed, along with related methods. In one aspect, the air cleaner assembly has a housing including a housing body and a removable cover that together define an interior volume for holding a filter cartridge. The housing body can include a first plurality of lugs, wherein each of the first plurality of lugs has a first engagement surface disposed at a first angle that is oblique to a rotational plane of the cover. A second plurality of lugs can be provided on the cover, wherein each of the second plurality of lugs has a second engagement surface disposed at the first angle. A lock mechanism can also be provided that is disposed on the cover, wherein the lock mechanism includes a lock member axially movable between a locked position and an unlocked position to selectively secure the cover to the housing body.

Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.

An improved device for collecting particulate matter suspended in the ambient air is disclosed comprising a container extending between an open first end and a closed second end defining a container interior. A container output communicates with a container interior located proximate the closed second end of the container. A filter cassette comprising a collection filter is permanently affixed to a filter holder. A retainer having a retainer input retains the filter cassette between the retainer input and the container output. An output connector connects the container output to a low pressure source for drawing ambient air into the retainer input for enabling the collection filter to collect particulate matter suspended in the ambient air entering the retainer input. Preferably, the filter holder and the filter are disposable.

A filter element has, on a filter element housing, a first and a second filter medium body, which are arranged at an angle to each other.

A foldable display device is provided. The foldable display device includes a flexible display module, a bottom frame, middle frames, and a connecting member. Two ends of the connecting member are provided with filter components. An accommodating cavity is formed among the flexible display module, the middle frames and the bottom frame communicating with an external environment through the filter components, so as to prevent the dust generated by the friction of components of the connecting member and the dust entering the accommodating cavity from the external environment, thereby avoiding short circuits and display malfunction of the foldable display device.