The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.

A filter device comprising at least one filter element (17) that is exchangeably disposed in a filter housing (1), wherein said filter element (17) is provided on at least one end with an end cap (23) that forms a surround for a rim of a filter material (31), wherein said end cap (23) is provided with a connector (43) with which the filter element (17) may be attached in an operating position to an element seat (19; 45) inside the filter housing (1) in such a way that a fluid-impermeable connection is formed between filter housing (1) and filter element (17), characterised in that the connector (43) enables the positionally fixed mounting of the filter element (17) and the formation of a fluid-impermeable connection in conjunction with element seats (19; 45) of filter housings (1) of different designs.

A water purifying apparatus including a head having a water inlet portion and a water outlet portion; a shaft provided in the head and rotatably mounted between the water inlet portion and the water outlet portion; a bypass flow path passing through a circumference of the shaft, and communicating the water inlet portion with the water outlet portion according to rotation of the shaft; a filter detachably mounted to the head, and having a filter inserting portion in which the shaft is inserted when being mounted on the head; and a filtering flow path in which an inlet port and an outlet port are formed on the circumference of the shaft in a direction intersecting the bypass flow path, and communicated between the filter, the water inlet portion and the water outlet portion with each other according to the rotation of the shaft.

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 water filter cartridge guide includes a ring with inward facing protuberances and outward facing protuberances. The guide is operative to center a water filtration cartridge within a sump.

A filtering system (10) includes a filtering apparatus having a filter unit for receiving liquid to be filtered, a receptacle for receiving filtered liquid, and an adapter (14) for coupling the filter unit to the receptacle, and also includes a base (12) having a cradle (26) for receiving the filtering apparatus and a base vacuum delivery port (28). The adapter includes an adapter vacuum receiving port (22) coupled to the vacuum delivery port for driving the liquid through the filter and—as filtered liquid—into the receptacle. The cradle and the adapter have an interlocking mechanism (52, 54) that locks the filtering apparatus to the cradle in a locking position in which the vacuum receiving port is sealingly coupled to the base vacuum delivery port. The base vacuum delivery port has a vacuum valve (30) constituted as a normally-closed valve automatically forced open when the filtering apparatus locks to the cradle.

A filtration device may include an adapter, a filter element, and a housing. The adapter may include a collar having an upper rim and a lower rim, a plurality of locking tabs extending from the upper rim, and a plurality of snap members extending from the lower rim. The filter element may include a casing and a plurality of receptacles connected to and arranged around a first outer surface of the casing. The plurality of receptacles are configured to receive the plurality of locking tabs. The housing, which is configured to receive the filter element, includes a shell and a plurality of ramp members that are connected to a second outer surface of the shell. The plurality of ramp members are configure to engage the plurality of snap members.

A filter assembly for fluidic connection at a function port includes a connection base having a base inlet and a base outlet, the base inlet being fluidly connected to supply channels for supplying a fluid to cartridge inlets of at least two filter cartridges, and the base outlet being fluidly connected to discharge channels to discharge the fluid from cartridge outlets of the filter cartridges. The connection base with the base inlet and the base outlet has a fluidic connection structure corresponding to the filter cartridge with the cartridge inlet and the cartridge outlet such that the connection base or a filter cartridge is fluidly connected at the function port.

A two-stage filtering system including a first and second filter container. The first filter container has a first filter assembly with a foam filter sleeve enveloping a fluid intake device, a connected valve, and transfer tubing. The second filter includes a pump connected to a spout, a second stage splashguard strainer, a second stage cup filter, and a second filter assembly. The second filter assembly includes at least one main filter comprising at least one carbon body filter enveloping a filter chamber, and exit tubing. The first filter container is structured to stack on top of the second filter container and the transfer tubing is structured to transfer first stage filtered fluid to the second filter container. The pump is structured to draw second stage filtered fluid from the second container through the exit tubing and expel the second stage filtered fluid out the spout to provide purified water.

Systems and apparatus for a fluid filtration device may include a filter housing having openings disposed along a sidewall of the filter housing and a check valve extending outwardly from a first end of the filter housing. The fluid filtration device may include a riser coupled to a second end of the filter housing and a filter cap coupled to a second end of the riser. The filter cap may have an opening fluidly linked to the riser and the filter housing and be configured to selectively attach the fluid filtration device to a container for holding fluids such as a three to six gallon refillable water container.