Cummins Filtration IP, Inc.

Rotating coalescer elements that maximize the radial-projected separation surface area in a given (rotating) cylindrical volume, where flow to be cleaned is passing axially upward or downward through a separating media of the rotating coalescer element. Various example package assemblies are provided with various types of rotating configurations including cylindrical coiled media packs, frustum coiled media packs, concentric cylinders, coiled metal or polymer films with and without perforations, and/or alternating layers of different materials. The described rotating coalescers may be driven by hydraulic turbine, electric motor, belt, gear or by mounting on rotating machine components, such as rotating engine shafts or connected components.

A filter element for a filter assembly includes a filter media, a main seal, and a planar side seal. The main seal is coupled to an outer periphery of the filter media and disposed in a main seal plane perpendicular to a first side wall of the filter element. The planar side seal is coupled to and extends outward from the first side wall, and diverges away from the main seal plane.

Embodiments described herein relate generally to adhesive alloys and their use in filter media, and in particular to adhesive alloys that can be melt blown onto a filter media layer, and which are thermally activated to bond the filter media layer to another filter media layer. An adhesive alloy is provided. A thermally activated adhesive has a first melting temperature. A polymer has a second melting temperature greater than the first melting temperature. A ratio of the thermally activated adhesive in the adhesive alloy is in a range of 5 wt % to 70 wt %.

This disclosure generally relates to perforated filter media and coalescing filter elements utilizing perforated filter media. One example coalescing filter element is structured to separate a dispersed phase from a continuous phase of a mixture. The filter media includes a first coalescing layer. The first coalescing layer includes a first filter media. The first filter media has a plurality of pores and a first perforation. Each of the plurality of pores is smaller than the first perforation. The first perforation is formed in the first filter media and extends through the first filter media. The plurality of pores are structured to capture a portion of the dispersed phase. The first perforation is structured to facilitate the transmission of coalesced drops of the dispersed phase through the first coalescing layer such that the coalesced drops of the dispersed phase are separated from the portion of the dispersed phase captured in the first coalescing layer.

A spin-on fluid filter with improved attachment and sealing with the filter head. The filter has a gasket positioned at the end of threads used to connect the filter to a filter head. The described design protects the gasket from excessive engine heat, cut or tear damage during installation, and the roll out effect of installation torque. In addition, the described attachment provides gasket protection and uniform compression of the gasket. The gasket can be any type that provides a seal which keeps external threads on the filter and the filter head dry.

A filter assembly comprising a housing with a first coupling member formed in a housing first end of the housing. The filter assembly further comprises a filter head with a first thread formed on a surface thereof. The filter assembly further comprises an adapter. The adapter includes a first adapter end, a second adapter end, and an annular portion. The annular portion is disposed between the first adapter end and the second adapter end. A first axial wall extends from the annular portion axially towards the first adapter end. The first axial wall includes a third coupling member configured to engage the second coupling member on the filter head. A second axial wall extends from the annular portion axially towards the second adapter end. The second axial wall includes a fourth coupling member configured to engage a first coupling member on the housing.

A filtration system comprises a housing and a shell housing removably coupled to the housing. A valve comprise a valve housing and a plunger. The plunger comprises a seal member structured to seal an opening in the valve housing. The plunger is axially movable between a closed position, in which the seal member seals the opening, and an open position, in which the seal member does not seal the opening, thereby permitting fluid to flow through the valve housing. A filter element comprises filter media and an endcap. The endcap comprises an alignment tab configured to rotationally secure the filter element with respect to the shell housing when the shell housing is received in the housing. The endcap comprise a valve interaction projection structured to transfer rotation of the filter element and the shell housing to the plunger during installation of the filter element.

A rotating separator includes a filter housing extending axially along a longitudinal axis and a filter element positioned within the filter housing. The filter element includes a first endplate and a second endplate operatively coupled to the first endplate, a first element core and a second element core positioned between the first endplate and the second endplate and configured to filter a contaminate from a fluid. An interior cavity is defined between the first endplate, the second endplate, the first element core, and the second element core. Fluid flowing through the filter element enters the interior cavity and is split between and flows in parallel through the first element core and the second element core.

A filtration system having an undulated interlocking housing-endplate interface geometry is described. In the filtration system, a filter element endplate and a filter housing component (e.g., a shell housing, a filter mounting head, etc.) meet at an interface. The filter housing component includes an undulating or repeating pattern that meshes with a matching undulating or repeating pattern on the endplate of the filter element. The undulating or repeating pattern prevents the filter element from freely rotating with respect to the filter housing component of the filtration system.