A method of assembling a canister filter system includes inserting a first filter component into a second filter component, and continuing the insertion until a first tab of either the first filter component or the second filter component contacts the other of the first filter component and the second filter component.

A reusable fluid filter system is disclosed. The fluid filter system includes a reusable fluid filter unit that encloses a filter and is removably connected to a manifold. In an embodiment, the filter unit includes an end cap that is detachable so as to replace the filter inside the filter unit. In an embodiment, the filter unit removably engages a valve in the manifold that controls flow paths in the manifold.

A Spin-on filter assembly that can be used with both suction-side and pressure-side filtration systems is described. The filter assembly screws onto a filter mounting head. The filter mounting head is part of a filtration system that provides fluid to be filtered to the filter assembly. The filter assembly filters the fluid to be filtered through a filter media contained within the filter assembly and provides the filtered fluid back to the filter mounting head. The filter assembly includes an upper seal that seals the clean side of the filter media from the dirty side of the filter media when the filter assembly is connected to the filter mounting head in an installed position. The upper seal includes a sealing ridge that has an elongated shape and is flexible such that the filter assembly can be used on both pressure-side and suction side applications in filtration systems.

A reusable fluid filter unit is disclosed. The reusable fluid filter unit encloses a filter and is removably connected to a manifold. In an embodiment, the filter unit includes an end cap that is detachable so as to replace the filter inside the filter unit. In an embodiment, the filter unit may include embossments or other structures that depress a mechanical valve in the manifold when the filter unit engages the manifold.

A filter assembly that includes a filter housing with a housing interlocking feature, a filter cover with a filter cover interlocking feature, and a filter element with a filter element interlocking feature is disclosed. The filter element is positionable within the filter housing, and the filter cover is attachable to a top portion of at least one of the filter element and the filter housing. The housing interlocking feature, the filter cover interlocking feature, and the filter element interlocking feature are interlockable with each other and extend in a nonplanar configuration along at least one side of the filter element when the filter housing, the filter cover, and the filter element are assembled together.

A filter assembly includes a filter head and a filter cartridge. The filter head includes a filter head coupling surface, a filter head outlet, a filter head inner wall, and a filter head outer wall. The filter head coupling surface defines a filter head opening. The filter head outlet is configured to provide a fluid. The filter head inner wall extends around the filter head outlet. The filter head outer wall extends around the filter head inner wall. The filter head inner wall and the filter head outer wall collectively define a filter head channel. The filter cartridge includes a filter cartridge shell and a filter element. The filter cartridge shell has a filter cartridge coupling surface that is configured to be coupled to the filter head coupling surface. The filter cartridge shell defines a filter cartridge opening.

A quick change oil filter includes a filter canister and filter base that may be installed and removed manually from an engine adapter on an internal combustion engine. The filter canister and filter base may hold at least about one third of the required engine oil supply when removed from the engine adapter. The engine adapter includes an oil inlet passage, an oil outlet passage, and a filter base mounting cavity. A check valve is biased to close an oil outlet opening from the filter canister, trapping oil inside the filter canister when it is removed from the engine adapter.

A water purifier, including a connector assembly including a connector body and a flange portion; the connector body includes the first water inlet cavity and the first water outlet cavity; the flange portion is provided with a flange hole; a filter element assembly including an end cover, the outer wall of the end cover is provided with a flange structure accommodated in the flange hole; a filter element cover having a T-shaped water inlet channel communicated with the first water inlet cavity and a water outlet channel communicated with the first water outlet cavity; a filter element having a water purification cavity communicated with the water outlet channel; and a casing fixed on the end cover, a fourth water inlet cavity is provided between the casing and the filter element and communicated with the T-shaped water inlet channel.

A filter element for a filter device of an internal combustion engine, in particular a motor vehicle, is disclosed. The filter element for filtering a fluid of the internal combustion engine can be inserted in the direction of an insertion axis along a lateral wall of a filter housing. The filter element has at least one sealing element for fluidically blocking at least one throughflow opening formed in the lateral wall.

A filter device with a spirally flushing function with a head having a filter flask main body and a water inlet hole connected with a water inlet passage, a water outlet hole connected with a water outlet passage, and a flushing hole connected with a flushing passage. A filter element casing arranged outside the filter element, and has a plurality of filter element casing water inlets. A flow divider arranged outside the filter element casing and covering a portion of an upper end of the filter element casing. A filter element end cap fixed to the top of the filter element and having a water outlet, which penetrates through the flow divider and is connected with the water outlet passage. Effectively improved flushing effect, and greatly prolonged service life of the filter element is experienced.