A hydration system includes a liquid reservoir, a reservoir coupler, a tube, a hydration valve (e.g., bite valve), a tube coupler (e.g., quick connect), and a flow-restricting device (e.g., check valve). The tube comprises a first end having the hydration valve, a second end for coupling to the liquid reservoir, and the flow-restricting device interposed between the first and second ends.

The invention relates to a drinking device for the retronasal perception of an aroma substance. The drinking device comprises a liquid reservoir that is fillable with drinking liquid, a mouthpiece with a mouth end, a transport tube for drinking liquid with an inner cavity which provides a flow connection between the liquid reservoir and the mouth end of the mouthpiece, and an aroma container for adding an aroma substance to an air flow flowing through the aroma container. The aroma container includes at least one air outlet opening which is in flow connection either with at least one aroma inlet opening into the inner cavity of the transport tube or in flow connection with an aroma channel extending up to the mouth end of the mouthpiece. The liquid reservoir may include an attachment that is to be attached to the body or clothing of a user or to a bag to be worn on the body. The transport tube may have a length of at least 15 cm and preferably a length of at least 20 cm.

In a method for cleaning a portable filter assembly including an elongated housing and a mouthpiece assembled with an outlet end port of the housing, the mouthpiece is disassembled from a female threaded portion of the outlet end port. A male threaded end connection of a cleaning fluid source is assembled to the female threaded portion of the outlet end port. A pressurized cleaning fluid is supplied from the cleaning fluid source to the outlet end port and through a filter element disposed in a fluid passage of the housing to expel the cleaning fluid and trapped contaminants from an inlet end port of the housing.

A portable water purifier has a container, a lid assembly, and a filtering assembly. The container has a containing space. The lid assembly is mounted to the container by threading and has a suction nozzle communicating with the containing space. The filtering assembly is mounted in the container, is connected to the lid assembly, and has a cover and at least one filter element. The cover is disposed in the container, is adjacent to the lid assembly, and has a communicating tube communicating with the suction nozzle and an interior of the container. The at least one filter element is disposed between the cover and a bottom of the container.

The present invention provides an intrinsically anti-microbial hollow fiber membrane for filtration of liquids. The membrane comprises a plurality of porous hollow bilayer membrane fibers wherein the liquid enters from outside of the fiber, passing through the porous membrane into the lumen of the fiber and coming out from the hollow ending of the fiber, wherein this configuration provides a liquid outside-in arrangement and retains the filtrate outside. It means that membrane of the invention has built in characteristics to act against microbes in order to provide the use with a safe liquid free from microbes. The outer side or outer wall of the hollow fibers may be configured to become hydrophobic whereas inner side or inner wall of the hollow fiber membrane may be configured to become hydrophilic to enhance the water permeability to a great extent. The hollow fiber membrane may be configured to give it an intrinsic anti-microbial capability. A device containing above said membrane has also been disclosed.

This invention, the tea filter straw, is a slender hollow shaped straw design with one end closed off and filter holes at this closed end directly built into the tea filter straw design. This invention allows for instant tea to be made not from a substitute derivative tea powder, but from any type, brand, and combination of authentic tea leaves. Any form of tea leaves is added to a liquid, most likely water, and after shaking the drinking container for a desired amount of time, the tea flavor rapidly diffuses throughout the container, causing the liquid to taste like the tea leaves have been brewed to completion. Once this takes place, the tea filter straw is inserted into the drinking container to drink the tea. The filter holes are small enough to not allow tea leaves and particulate to enter the tea filter straw, just the tea liquid. The straw and filter are one continuous piece, meaning the filter holes are directly built into the straw.

A container system having an access portal is disclosed. The container system may contain a selected material for access and withdraw through the portal. The portal may be engaged in any appropriate manner, such as with the application of a vacuum or pouring out.

The present invention provides an intrinsically anti-microbial hollow fiber membrane for filtration of liquids. The membrane comprises a plurality of porous hollow bilayer membrane fibers wherein the liquid enters from outside of the fiber, passing through the porous membrane into the lumen of the fiber and coming out from the hollow ending of the fiber, wherein this configuration provides a liquid outside-in arrangement and retains the filtrate outside. It means that membrane of the invention has built in characteristics to act against microbes in order to provide the use with a safe liquid free from microbes. The outer side or outer wall of the hollow fibers may be configured to become hydrophobic whereas inner side or inner wall of the hollow fiber membrane may be configured to become hydrophilic to enhance the water permeability to a great extent. The hollow fiber membrane may be configured to give it an intrinsic anti-microbial capability. A device containing above said membrane has also been disclosed.

A container system having an access portal is disclosed. The container system may contain a selected material for access and withdraw through the portal. The portal may be engaged in any appropriate manner, such as with the application of a vacuum or pouring out.

A portable water purifier has a container, a lid assembly, and a filtering assembly. The container has a containing space. The lid assembly is mounted to the container by threading and has a suction nozzle communicating with the containing space. The filtering assembly is mounted in the container, is connected to the lid assembly, and has a cover and at least one filter element. The cover is disposed in the container, is adjacent to the lid assembly, and has a communicating tube communicating with the suction nozzle and an interior of the container. The at least one filter element is disposed between the cover and a bottom of the container.