A vacuum freshness preservation container that can be pressed on two sides provided in this application includes a container body and container cove. The container cover has chambers disposed symmetrically, a piston is slidably disposed in each chamber, and each chamber has an air outlet which communicates with an interior of the container body and where a first check valve is disposed. The piston is provided with an air discharge structure that communicates the chamber with an outside when the piston moves toward the first check valve, and the container cover is provided with a linkage mechanism such that the two pistons move in opposite directions. By alternately pressing pistons in two chambers, the chambers always keep in a vacuumizing state, thereby achieving a higher efficiency.

A bung plug closure for bung-hole containers includes a bung plug for being placed in a bung neck and a seal cap for closing a plug recess formed in the bung plug, the plug recess having a space for receiving a dimensionally elastic engaging body formed on the seal cap and having a radial locking protrusion, a valve disposed in a bottom of the plug recess, the valve having a valve body disposed in a valve opening of a bottom recess, the valve body including a valve cover connected to the bung plug, the valve cover being an elastically deformable disk, the valve cover connected to the bung plug such that a circumferential edge of the valve cover, which protrudes radially outward over matching locking elements for interlocking with the locking protrusion, is received between the locking protrusion of the engaging body and a recess edge of the bottom recess.

A modular bottle (e.g., for holding liquid or dry storage contents) and its various assemblies, components, and structures are provided. The bottle can include a body portion including an open longitudinal end and an interior region, an end cap configured to be secured over the open longitudinal end to enclose the interior region, and a flexible loop. The end cap can include a pair of knobs disposed on a circumferential side surface of the end cap. Each end of the flexible loop can define an aperture that is smaller than a largest diameter of each of the pair of knobs such that each end of the flexible loop is selectively couplable with each of the pair of knobs.

A vent valve for a closed tank, the vent valve being provided in an upper surface of the closed tank storing liquid, may include an upper housing provided with an upper air hole disposed outside the closed tank; a lower housing provided with a lower air hole disposed inside the closed tank; and a valve core provided in a housing space area surrounded by the upper housing and the lower housing and providing a ventilation path through which only gas passes between the upper air hole and the lower air hole.

A vacuum storage system (40) for storing an article, comprises a sealable outer chamber (30) and a sealable inner chamber (20). The sealable outer chamber (30) has an evacuation valve (21) for connection to a suction device (48) for evacuation of said outer chamber (30). The sealable inner chamber (20) is adapted to receive said article and has a one-way valve (13) in communication with the outer chamber (30). The one-way valve (13) is adapted to open upon the application of suction to the outer chamber (30), thereby to enable evacuation of said inner chamber (20), but to close upon discontinuation of said suction.

A method for preserving wine or other oxygen sensitive items is disclosed. In some embodiments, the method involves injecting 0.15 gram to 0.5 gram of an inert gas into a container comprising wine and oxygen, without raising a pressure within the container above 10 psig, to form a barrier layer of the inert gas between the wine and the oxygen in the container without displacing all of the oxygen from the container.

A food storage container is described. The food storage container includes a base with sidewalls extending upward from the base. The base and the sidewalk forming an interior volume. A plurality of tracks disposed in the base on the interior of the container. The tracks are configured to accept at least one divider therein. Dividers are placed in the container to create partitions. The container has a lip located at the top of the sidewalls. A lid may be included with the container to seal the container. In one embodiment the lid creates a waterproof seal. Handles may extend from the sidewall such that the handles can be used to carry the container.

A hydraulic device for a rail vehicle includes a fluid container, a motor with a pump, a control plate, a control region, a ventilation and purging unit for ventilating and purging the fluid container, wherein the ventilation and purging unit has a valve unit integrated into a wall of a housing of the fluid container, and a channel labyrinth connected to the valve unit.

A drinking container includes an automatically opening and closing magnetic lid. The drinking container includes a container portion, a sleeve, and a lid. The sleeve is moveable between a closed position and an open position with respect to the container portion, the sleeve including a sleeve magnet. The lid is moveable from a closed configuration to an open configuration, the lid including a lid magnet, the closed configuration of the lid sealing an access pathway to an interior of the container portion, the open configuration of the lid opening the access pathway to the interior of the container portion. In the closed position of the sleeve, a biased force holds the lid in the closed configuration. In the open position of the sleeve, the sleeve magnet and the lid magnet have a magnetic force greater than the biased force to place the lid in the open configuration.

A one-way valve, a food package comprising such a one-way valve and a method for manufacturing such a one-way valve is disclosed. The valve comprises a first membrane and a second membrane having a smaller surface area than the first membrane and furthermore being fixed to a bottom surface of the second membrane. The valve is furthermore adapted to be fixed to the food package and cover the aperture such that a canal is formed between the food package and the second membrane when a gas pressure inside the food package exceeds a threshold value, the canal extending from the aperture to the peripheral edge of the first membrane along the second membrane.