A filter housing assembly for fluid filtration which may be attached to, and removed from, a filter base by a push-actuated release. The filter housing assembly has a top portion with an ingress port and egress port extending therefrom, and a protrusion extending from the filter housing longitudinally axial center. The ingress and egress port are formed in an hourglass shape. A filter key having a base with a groove for mating with said projection, at least one finger extending from said base, and an electronic circuit component housing attached thereto for receiving a printed circuit board, is connected to the filter housing top portion by mating said top portion protrusion with the filter key groove. Both of said ingress and egress port have at least one cavity for the passage of fluid therethrough, where each cavity is exposed in a direction facing away from the electronic circuit component housing.

A filtration system interconnection structure having a filter manifold including a sump and a coded polymagnet located on or connected to a portion of the manifold, and a filter cartridge including a filter media, first and second end caps sealed to the filter media, and a paired coded polymagnet magnet located on or connected to the filter cartridge. The polarity profiles of the paired coded polymagnets are aligned such that a magnetic attraction force, magnetic repulsion force, or combination thereof, is generated therebetween when the filter cartridge is inserted within the manifold sump housing and moved to the alignment position, thereby causing the coded polymagnet located on or connected to the manifold to translate with respect to a longitudinal axis of the sump to allowing for direct or indirect actuation of downstream system functionality.

In one example, a core cover includes an inner wall that defines a fluid passageway configured to communicate with an interior of a filter core when the core cover is engaged with the filter core. As well, the core cover includes an outer wall spaced apart from the inner wall, and a complementary structure located on the outer wall and configured to engage a corresponding complementary structure of a filter core. Finally, the core cover includes one or more indicia that indicate a flow rate, or range of flow rates, associated with the core cover.

A filter for a water cooler includes a housing having a surface and a cavity with cavity ports. The filter end is adapted to be received in the housing. The filter end includes a cylindrical base having a surface and a neck extending from the surface. The neck has filter ports and a side surface. The side surface has oppositely directed axially extending elongated protrusions configured to be received in channels in the housing. The base surface includes a complex set of protrusions which are adapted to be received in a similarly configured set of recesses in the housing surface. The protrusions/recesses may take the form of letters, numbers or symbols. The filter end is be fully seated in the housing in bayonet-type fashion to connect the filter ports and the housing ports o permit water to flow through the filter from the water supply to the water cooler.

A filtration system interconnection structure having a filter manifold and a filter cartridge in magnetic communication with one another, such that a latching mechanism of the manifold secures the filter cartridge within a manifold sump when the filter cartridge is inserted therein. The magnetic communication is formed between two complementary coded polymagnets capable of producing a magnetic shear force when in close proximity to one another. The magnetic shear force removes a latch blocking structure from interfering with the latch, allowing the latch to secure the filter cartridge. Movement of the latch blocking structure coded polymagnet relative to the filter cartridge coded polymagnet may be perpendicular or parallel with respect to each other such that a shear force is generated therebetween, allowing for actuation of the latch blocking mechanism against a biasing force, and allowing the latch to move radially inwards against a separate biasing force.

A filter element for fluid filtration, in particular for hydraulic fluid, has element components, such as pleated and multi-layer filter material (10) that extends between two end caps (26) and has a fluid-permeable supporting tube (14) forming a hollow cylinder. At least one element component of the filter element is provided at least partially with at least one luminescent material or marker such that the material or marker is excited to a characteristic, detectable wave emission when exposed to a certain exciter wave or wave spectrum.

An anti-counterfeiting mechanism for a filter element to specifically, and preferably uniquely, identify a filter with a conductive pattern or path of conductive materials preferably either embedded (thin film circuit) under the surface, or over molded on, a portion of the filter. The conductive materials are preferably positioned at the filter end cap. The resistance of the filter element is an identifier that is preferably associated with the OEM manufacturer's labeling (such as product number) and/or other branding of the component. This electrical resistance signature permits rapid identification of counterfeit filters.

A filter housing assembly for fluid filtration which may be attached to, and removed from, a filter base by a push-actuated release. The filter housing assembly has a top portion with an ingress port and egress port extending therefrom, and a protrusion extending from the filter housing longitudinally axial center. The ingress and egress port are formed in an hourglass shape. A filter key having a base with a groove for mating with said projection, at least one finger extending from said base, and an electronic circuit component housing attached thereto for receiving a printed circuit board, is connected to the filter housing top portion by mating said top portion protrusion with the filter key groove. Both of said ingress and egress port have at least one cavity for the passage of fluid therethrough, where each cavity is exposed in a direction facing away from the printed circuit board.

An air purifying system includes a housing receiving at least partially therein a filter, a weighing system at least selectively connected to the filter, and an actuating system adapted to move the filter between a first position relative to the housing and a second position relative to the housing. A controller is configured to calibrate the weighting system when the filter is in the first position, and determine a weight of the filter when the weighting system is in the second position. A method for weighting in-situ a filter in an air purifying system is also presented.

An anti-counterfeiting mechanism for a filter element to specifically, and preferably uniquely, identify a filter with a conductive pattern or path of conductive materials preferably either embedded (thin film circuit) under the surface, or over molded on, a portion of the filter. The conductive materials are preferably positioned at the filter end cap. The resistance of the filter element is an identifier that is preferably associated with the OEM manufacturer's labeling (such as product number) and/or other branding of the component. This electrical resistance signature permits rapid identification of counterfeit filters.