A batch gasification assembly comprises a pressure vessel having an open end and being configured to contain a beverage to be carbonated and a flexible seal that covers the open end of the pressure vessel. A closure mechanism for the pressure vessel comprises a retainer configured to receive and retain the open end of the pressure vessel, a top cap, and an over-center clamping mechanism that is configured to clamp the top cap onto the open end of the pressure vessel so that the flexible seal member is sandwiched between the top cap and the open end of the pressure vessel.

A lid stay formed from a housing slidably coupled to a base. The housing has a coupler section for securing said housing to a fixed object, and a connector section for securing the housing to the base. The base is formed from a cylindrical shaped tube defining an interior chamber, having an insertion section constructed and arranged to slidably receive said housing, but prevent the connector section of the housing from passing therethrough. An expanded coil spring is positioned within the interior chamber to maintain the housing and base in an expanded position. The lid stay is for use with a storage container base having a lid pivotally attached thereto. The lid stay biases the lid in an open position and provides resistance when closing the lid.

A lid stay formed from a housing slidably coupled to a base. The housing has a coupler section for securing said housing to a fixed object, and a connector section for securing the housing to the base. The base is formed from a cylindrical shaped tube defining an interior chamber, having an insertion section constructed and arranged to slidably receive said housing, but prevent the connector section of the housing from passing therethrough. An expanded coil spring is positioned within the interior chamber to maintain the housing and base in an expanded position. The lid stay is for use with a storage container base having a lid pivotally attached thereto. The lid stay biases the lid in an open position and provides resistance when closing the lid.

The container contains a cap element, a hollow case member with an open top side, a tab element, and an elastic element. The cap element is hinged to the case member so that the cap element can be flipped to reveal or cover the case member. The tab element is hinged to a front side of the case member locking the cap element, and the elastic element is configured to a rear side of the case member that is bended by the cap element when the cap element closes the case member. When the tab element is depressed, the cap element is released, and the elasticity of the elastic element pushes open the cap element. The elastic element helps reducing the friction between the cap element and the case member, thereby enhancing the convenience and reliability of opening the container.