Donaldson Comapny, Inc.

Claudio Formica

Kurt Joscher

Jason Paul Johnson

Fabrizio Buratto

Francesco Marangoni

Daniel Robert Frembgen

Luca Piva

Mauro Cantoni

Angelo Schiavon

Andrey Zanettin

John R Hacker

Philip Edward Johnson

Enrico Greco

Christian Guernieri

Michael L Brown

Kurt Bryan Joscher

John Francis Connelly

Liquid filter assemblies, features, components and methods are described. In general, a liquid filter cartridge is provided which includes features that help ensure that when the assembly is serviced, the cartridge positioned within the assembly is a proper one, in proper sealing orientation, for appropriate use. Features that can be used to provide for this include: a seal on the filter cartridge that defines a seal pattern non-orthogonal to a plane perpendicular to a central axis of the filter cartridge; and, a member of a projection/receiver arrangement on the filter cartridge which is orientated to engage a portion of a liquid filter assembly, for example a liquid flow collar, to allow sealing when the cartridge is a properly positioned cartridge and a properly configured cartridge. Assembly features are described. Also, a flexible radial projection arrangement providing snap-fit interaction between a cartridge and housing is provided. Methods of assembly and use as described.

Liquid filter assemblies; features; components; and, methods

A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement. An optional valve, to allow flow from an interior of the assembly to a reservoir if needed, is provided. Preferred serviceable filter cartridges are shown.

Liquid filter assembly; components; and, methods

A liquid filter assembly is provided. The assembly includes a liquid filter cartridge and a housing. The liquid filter cartridge, includes, among other things, first and second, opposite, end caps each having a central aperture therethrough. A seal arrangement including a radially directed seal is mounted on a seal support of the first end cap that projects away from the second end cap. The cartridge includes a seal mount configured to define a seal plane non-orthogonal to a central axis of the cartridge. The housing includes a filter head and a housing sidewall. The filter head includes a filter head having a body, a top cover and a bottom aperture opposite the top cover. The housing extends through the bottom aperture. The cartridge as described is installed in the housing, with an end cap radially sealed against a tube in a bottom of the housing.

Liquid filter assembly; and, methods

A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement. A valve, to allow flow from an interior of the assembly to a reservoir if needed, is provided. Preferred serviceable filter cartridges are shown.

Liquid filter assembly; components; and methods

A spin-on filter cartridge includes a housing, a filter element operably oriented in the housing, a baffle plate, and a seal arrangement. The baffle plate is operably oriented over the housing open end and defines a central flow aperture. The baffle plate also defines a continuous groove immediately adjacent to and circumscribing the central flow aperture. The seal arrangement is secured to the baffle plate and spaced from and circumscribing the continuous groove. A filter assembly including the spin-on filter cartridge and a filter head is also disclosed wherein the filter cartridge is removably mountable on the filter head. When the spin-on filter cartridge is oriented on the filter head, a seal member is received within the continuous groove and the seal arrangement forms a seal between and against the baffle plate and the filter head. The seal can be radial or axial or have both axial and radial components.

Spin-on filter assembly and methods

Liquid filter assembly, components; and methods

A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement. The suction filter arrangement preferably includes a dimensionally biased valve arrangement, preferably one which is devoid of a helical coiled spring, to control flow through the suction filter. A flow/pressure regulation valve, to allow flow from an interior of the assembly to a reservoir if needed, is preferably provided. Preferred serviceable filter cartridges are shown.

Liquid filter assembly; and methods

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Pomponesco, Italy

Claudio Formica