A protective shield for filter leaf bags utilized in a filtration system is disclosed. In a particular embodiment, the protective shield comprises an upper shield surface comprising an elongated strip having securing ring proximate to a mid-point of the strip. The protective shield embodiment further comprises a forward side strip and a rear side strip extending downwardly and generally perpendicularly to the upper shield surface. When installed over the upper portion of the filter bag, the protective shield deflects liquid streams away from the upper portion of the filter bag decreasing damage and prolonging bag life.

Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features are disclosed. Methods of assembly and systems for use are described.

A filter baffle assembly including a filter cap engageable to a mouth of a container, the filter cap including a filter vent operatively attached to a liner situated within an inner space of the filter cap, and a gas permeable point baffle welded to the liner and covering the filter vent, the point baffle including at least one perforation to permit gas exchange between the container interior and the filter vent, and to protect the filter vent from contact with contents in the container. A gas permeable point baffle for protecting a filter vent from contact with the contents of a container, including at least one perforation, the point baffle being welded to a liner and covering a filter vent operatively attached to the liner, housed within a cap engageable to the mouth of the container. A method for protecting a filter vent from the contents of a container.

Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features are disclosed. Methods of assembly and systems for use are described.

The present disclosure is related to filter elements and more specifically to filter elements for removing dust from air. In an embodiment, an inventive filter element includes a housing having a first side and a second side, filter material in the housing, a space between the filter material and the first side of the housing for forming a suction chamber, and at least one hole in the first side, whereby the area within the circumference of the side of the filter material facing the first side of the housing is larger than the area of at least one hole.

A filter baffle assembly, including a filter cap engageable to a mouth of a container, the filter cap including a filter vent operatively attached to a liner situated within an inner space of the filter cap, and a gas permeable baffle disposed between a mouth of the container and the filter vent, covering the filter vent, the baffle including a single perforation to permit gas exchange between an interior of the container and the filter vent, and to protect the filter vent from contact with contents housed in the interior of the container. A gas permeable point baffle for protecting a filter vent from contact with the contents of a container, including a single perforation, the point baffle being welded to a liner and covering a filter vent operatively attached to the liner, housed within a cap engageable to the mouth of the container. A method for protecting a filter vent from the contents of a container.

A filter baffle assembly including a filter cap engageable to a mouth of a container, the filter cap including a filter vent operatively attached to a liner situated within an inner space of the filter cap, and a gas permeable point baffle welded to the liner and covering the filter vent, the point baffle including at least one perforation to permit gas exchange between the container interior and the filter vent, and to protect the filter vent from contact with contents in the container. A gas permeable point baffle for protecting a filter vent from contact with the contents of a container, including at least one perforation, the point baffle being welded to a liner and covering a filter vent operatively attached to the liner, housed within a cap engageable to the mouth of the container. A method for protecting a filter vent from the contents of a container.

Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features are disclosed. Methods of assembly and systems for use are described.

An air filter element fits upon an air cleaner housing with a bar element that is received into the outlet face of the air filter element. The air filter element has a receiver extending into the outlet face to accommodate the bar. In the case of a deep pleated pack for the filter element, a widened split may be provided to accommodate the bar. A protective member that can be provided as part of a basket may project into the outlet face to protect the air filter element pack at the receiver.

Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features disclosed are particularly well adapted for use with a safety or secondary filter cartridge, usable with media thereof projecting into an open interior of a main filter cartridge, in use. An example filter cartridge is described, with a non-pleated end and a pleated end, although variations are also described. Advantageous main cartridges are also described. Methods of assembly and systems for use are described.