Disclosed herein is a barrel lid for facilitating ventilating of a barrel, in accordance with some embodiments. Further, the barrel lid comprises ports, pumps, a duct, and valves. Further, an inlet pump of the pumps is configured for drawing external air into an interior space of the barrel from an exterior space of the barrel through an inlet port of the ports and an outlet pump of the pumps is configured for expelling internal air from the interior space into the exterior space through an outlet port of the ports. Further, the duct is coupled with the inlet port. Further, openings of the duct are configured for creating airflows in the interior space for ventilating the interior space based on the drawing and the expelling. Further, the valves are configured for transitioning between an open state and a closed state for openably closing the ports.

A collapsible food container, comprising a collapsible container and a lid assembly, the collapsible container including an upper portion, a lower portion, and a seating wall, the seating wall coupled to a first end of the upper portion and the lower portion coupled to a second end of the upper portion opposite the first end, the upper portion being collapsible as to transition the collapsible container between an expanded state and a collapsed state, the lid assembly including a rigid collar and a rigid lid, the rigid collar removably coupled to the seating wall of the collapsible container and the rigid lid removably coupling to the rigid collar.

A pressure actuated pressure relief valve is disposed in the body of a beverage vessel and is configured to be in fluidic communication with an exterior of the beverage vessel and an interior of the beverage vessel. The pressure actuated pressure relief valve being configured to actuate from a closed position to an open position based on pressure reaching a threshold within the interior of the beverage vessel. The pressure actuated pressure relief valve being configured to actuate from the open position to the closed position based on pressure falling below the threshold within the interior of the beverage vessel.

A resealable cap having a valve-type plug incorporated therein, and a device for manipulating the valve-type plug into a closed, sealed, position to maintain a decreased pressure in a container.

A container set includes a cover, a base, the cover having a cover sealing member which is made of elastic material and protrudes from a cover peripheral edge of the cover to allow the cover to engage the base, and a first container received between the cover and the base and having a container edge to allow the first container to engage an inner surface of the cover. In addition, the inner surface of the base has a base groove to allow the cover sealing member to engage the base groove when the cover engages the base, wherein the container edge, the cover sealing member and the base groove constitute an interlocking structure. With this interlocking structure, the cover, the base and the container(s) located therebetween can form a tightly engaged container set.

A double-walled container includes a top opening, and a bottom opening, opposite the top opening. A removable top cap engages with threads at the top opening and a removable bottom cap engages with threads at the bottom opening. The double-walled container includes an outer wall and an inner wall. A channel formed on and encircling the outer wall includes a vacuum port through which air between the outer and inner walls is drawn out to form an insulating space between the inner and outer walls. A band is positioned within the channel to cover the vacuum port.

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 method and device for preserving wine or other oxygen sensitive items is disclosed. In some embodiments, the method involves injecting at least 0.15 gram of an inert gas to a closed container comprising wine and oxygen. In some embodiments, the device has a housing, a pressure indicator, a pressure sensor, and a one-way valve. The housing is configured to seal an opening of a wine bottle. The housing has a closure side configured to be in communication with an interior of the wine bottle. The housing has an input channel extending through the housing. The pressure sensor is within the housing and is in communication with the closure side. The one-way valve is in the input channel. The pressure sensor is configured to move the pressure indicator to an indicating position when a predetermined amount of pressure is reached at the sensor.

A cup lid for easy discharge of internal gas which seals the upper portion of the cup body and discharges the internal gas of the cup body to the outside as the internal gas pressure of the cup body increases. The cup lid includes a cover portion that is detachably coupled to an upper portion of the cup body and has a circulation groove formed at one end thereof; a seal that protrudes from the lower end of the cover portion and is coupled to the upper end of the cup body; and an outlet that is coupled to the circulation groove for discharging the gas inside the cup body to the outside.

An apparatus for dispensing liquid from a container, and for monitoring the level of liquid within said container, comprises a container for storing liquid to be dispensed; and a conduit, the conduit comprising: a feed tube extending from the container to an appliance; a dip tube extending in the container to the bottom of the container; a liquid supply channel extending through the feed tube and dip tube and having an open first end defined by a lower end of the dip tube, which, in use, is arranged to be immersed in said liquid in said container, and a second end arranged, in use, to extend outside of said container; and a pressure measurement channel branching from the feed tube at a point located between said first and second ends of the liquid supply channel. The apparatus further comprises a pressure transducer in fluid communication with said pressure measurement channel, and a means to draw liquid from the first end of the liquid supply channel to dispense liquid from the second end of the liquid supply channel. The pressure measurement channel branches from the feed tube at a fixed height relative to the bottom of the dip tube.