An on-demand filter structure including a first hydrophilic protective layer comprising a first surface exposable to a stream of water. A contact area on the first surface receives the stream. The first hydrophilic protective layer receives the stream and distributes water out a second surface, primarily using gravity. An activated carbon felt (ACF) layer is adjacent to the second surface, wherein the ACF layer is configured for water filtration, primarily using gravity. A second hydrophilic protective layer includes a third surface adjacent the ACF layer and a fourth surface. The third surface receives filtered water from the ACF layer, and the fourth surface expels the filtered water primarily using gravity, wherein the first and second hydrophilic protective layers sandwich the ACF layer. A cross section of the first hydrophilic protective layer, the ACF layer, and the second hydrophilic protective layer has a curvature.

A water pitcher with sensing capabilities is provided. The water pitcher includes at least a container adapted or otherwise shaped for retaining water therein, and a cover adapted to cover at least a portion of the container. The water pitcher further includes an indication assembly attached to the container and/or the cover. The indication assembly includes at least a sensor for detecting movement of contents within the water pitcher and/or movement of the pitcher upon expiration of a filter within the pitcher. Upon detecting movement of the pitcher, the sensor is configured to activate an indicator (e.g., an LED) for notifying a user of the expired filter and/or movement of the pitcher during the expiration period of the filter.

A water filter system with a filter housing, a filter media, a filter coupling, and a dynamic seal. The filter housing has a top plate and a bottom plate which are both water-permeable, as well as a cavity between the top plate and the bottom plate. The filter media is within the cavity of the filter housing and extends through the bottom plate of the filter housing. The filter coupling extends upward from the top plate and is configured to attach to a float with at least one air chamber. The dynamic seal is coupled to the filter housing along a perimeter of the filter housing and is configured to extend beyond a perimeter of the float, maintain contact with a wall of a water container, and restrict water from passing between the dynamic seal and the wall of the water container.

A metal foam, such as copper metal foam, is used for water filtration and purification. A method is used to manufacture a new water purification device with the capability of killing bacteria and viruses using three dimensionally connected copper foam filter consisting of random or elongated channel pores and large surface area, thereby increasing the copper surface area in contact with contaminated water drops and purifying them. The copper foam water filter has pores on the order of several to tens of micrometers and porosity ranging from 50 percent to 75 percent to properly control the water filtration time and the contact time between the copper foam pore surface and water drops during filtration.

A portable drinking water filter system, such as a pitcher, having a sleeve and a floatable body including a filter opening configured to receive a water filter, the floatable body having a seal extending outward from an outer surface of the floatable body. The floatable body is disposed in a sleeve cavity such that a body seal engages the sidewall and restricts water from passing between the floatable body and the sidewall. The seal is configured to create friction with the sidewall, wherein the friction created when the floatable body rises in the sleeve is different than when the floatable body lowers in the sleeve. The friction created when the floatable body rises in the sleeve is greater than when the floatable body lowers in the sleeve, allowing the floatable body to auto-retract toward a cavity base without burping.

The invention relates to a bioactive filter for the disinfection of liquids, in particular water or aqueous solutions in containers. A structure that is advantageous in terms of filter efficiency is obtained by forming a spherical or oval filter body (1), which is coated with noble metals (FIG. 1).

The present invention relates to a fluid filter for treating fluid, including a filter media for filtering the fluid, and a filter housing having a fluid impermeable plate to carry the filter media. The fluid outlets and the fluid outlets are arranged in a staggered manner in a height direction of the filter media, so that a flow path along which the fluid flows in the filter media is extended, preferably maximized, to provide an extended fluid residence time. The present invention also discloses a water container comprising the water filter and an air release device for discharge of air remaining in the water filter to an atmosphere.

On example of a fluid dispensing system includes an unfiltered water container body defining an internal storage volume configured to hold a volume of water, a fluid outlet arranged for fluid communication with the internal storage volume, and a filter element positioned in the internal storage volume. With this configuration, a water dispensing process can be performed in which a single continuous stream of unfiltered water from the unfiltered water container body can pass through the filter element and be dispensed from the unfiltered water container body as a stream of filtered water. A water soluble tablet with an additive is positioned in the internal storage volume downstream of the filter medium such that the filtered water can pass out of the filter element and into contact with the water soluble tablet before being dispensed from the fluid outlet.

An eco-friendly water filtration apparatus. The apparatus may comprise a lid comprising openings that allow water to flow into the apparatus, and an enclosure that is open at one end and comprises openings at the opposing end that allow water to flow out of the apparatus. The enclosure may be configured to receive a pod of activated carbon, while allowing removal of the pod, and the lid may be configured to attach to and detach from the enclosure at the enclosure's open end.

An apparatus for manufacturing hydrogen-containing water is disclosed. In one aspect, the apparatus includes a container part formed with a upper space and a lower space positioned vertically from each other around a connecting passage therein. The apparatus also includes an ion exchange membrane configured to close the connecting passage and an electrolytic part comprising an anode disposed on the upper space and a cathode disposed on the lower space. The apparatus further includes a handle part configured to couple to the container part and to provide a supply passage for water to be supplied to the lower space and a discharge passage to discharge oxygen and ozone generated from the lower space.