An interchangeable filter facemask apparatus for providing a variety of different filtration options includes a mask body including a body perimeter portion, a sidewall extending from the body perimeter portion, a body left side, a body right side, a body nose side, a body chin side, a body outside, and a body inside. The sidewall has a filter aperture extending from the body outside through the body inside. A headband is coupled to the mask body. A body engagement member is coupled to the body outside adjacent an aperture perimeter of the filter aperture. Each of a plurality of filters has a filter outside, a filter inside, and a filter perimeter. Each filter has a filter engagement member coupled to the filter inside adjacent the filter perimeter. The filter engagement member is selectively engageable with the body engagement member to cover the filter aperture with the filter.

This disclosure provides apparatuses and methods for a rotatable, cylindrical basket within a housing, wherein the rotatable, cylindrical basket has a longitudinal bore therethrough and an external surface, and, optionally, other surface areas, comprising filtering media. Further, the housing may include an inlet and an outlet, wherein the inlet and the outlet, optionally openable and closeable, and located at least proximate to opposing ends of the rotatable, cylindrical basket. Further still, the apparatus may include a heating unit removably coupled to the rotatable, cylindrical basket, wherein the heating unit is configured to blow hot air onto at least a portion of the filtering media.

This disclosure provides apparatuses and methods for a rotatable, cylindrical basket within a housing, wherein the rotatable, cylindrical basket has a longitudinal bore therethrough and an external surface, and, optionally, other surface areas, comprising filtering media. Further, the housing may include an inlet and an outlet, wherein the inlet and the outlet, optionally openable and closeable, and located at least proximate to opposing ends of the rotatable, cylindrical basket. Further still, the apparatus may include a heating unit removably coupled to the rotatable, cylindrical basket, wherein the heating unit is configured to blow hot air onto at least a portion of the filtering media.

A filter assembly comprises a filter housing defining an internal volume having an inner cross-section defining an inner cross-sectional distance, the filter housing having a base and a sidewall. A filter element is disposed within the internal volume. The filter element comprises a filter media pack at least a portion of which has an outer cross-section defining an outer cross-sectional distance that is substantially equal to the inner cross-sectional distance of the internal volume of the filter housing. A support structure is coupled to at least one longitudinal end of the filter media pack.

A filter assembly comprises a filter housing defining an internal volume having an inner cross-section defining an inner cross-sectional distance, the filter housing having a base and a sidewall. A filter element is disposed within the internal volume. The filter element comprises a filter media pack at least a portion of which has an outer cross-section defining an outer cross-sectional distance that is substantially equal to the inner cross-sectional distance of the internal volume of the filter housing. A support structure is coupled to at least one longitudinal end of the filter media pack.

An arc flash management system including a cabinet having multiple walls surrounding electrical equipment capable of producing arc flash, at least one aperture within one of the walls, and an arc exhaust attachment emanating from at least one of the apertures for directing possible arc flash away from the cabinet.

The invention relates to a bioactive filter for the disinfection of liquids, in particular water or aqueous solutions in containers. A structure that is advantageous in terms of filter efficiency is obtained by forming a spherical or oval filter body (1), which is coated with noble metals (FIG. 1).

The invention relates to a bioactive filter for the disinfection of liquids, in particular water or aqueous solutions in containers. A structure that is advantageous in terms of filter efficiency is obtained by forming a spherical or oval filter body (1), which is coated with noble metals (FIG. 1).

A support grid assembly for use in a vessel. The support grid assembly includes panels each including a first wall including a media-supporting screen and a second wall to be supported by the vessel wall inner surface. A manifold is coupled to the panels and is in hydraulic communication with vessel outlet. The manifold and the panels permit fluid to flow through the screen in each panel, through the panels, into the manifold, and through the manifold to the outlet of the vessel, as well as in the reverse direction. At least a portion of the first wall may slope downward toward the manifold, and at least a portion of the second wall may form a bottom surface that is curved to substantially conform to a curvature of the vessel wall inner surface. The panels may be arranged in a circular configuration extending radially from the manifold.

A plate filter for coffee makers and the like, such as moka pots, Neapolitan flip coffee makers, coffee presses, or percolators, comprises a filtering wall (6a) provided with a plurality of holes or apertures (8) that define as a whole a substantially mesh-like structure having, according to the DIN 791 standard, a long side of mesh pitch or major diagonal (DL) that is less than 2 mm±5%, in particular comprised between 0.1 and 1.9 mm±5%, preferably comprised between 0.6 and 1 mm±5%, and even more preferably of 0.85 mm±5%.