A package includes a base, a lid, and a locking mechanism. The locking mechanism includes an arm and a flexible member. The arm extends from the lid and has a first engaging structure. The member includes a flexible rib connected to a base floor, and a second engaging structure and a contact structure on a rib outer surface. The member flexes in response to a first force applied in a first direction to the contact structure and relaxes in response to absence of the first force. The member engages the first and second engaging structures based on the member being relaxed while the lid is closed. The member disengages the first and second engaging structures based on the member being flexed while the lid is closed. The lid may be opened based on applying a second force to the lid in a second direction while the member is flexed.

A mechanism or feature incorporated into or on the lid of a one piece child-resistant container which allows customization of the container by attachment of an independent, separate ancillary piece or identifier cap to the lid. The identifier cap may snap onto or be pushed onto the lid in a secure manner.

The container includes a base and a lid pivotally coupled to the base. The base includes a bottom wall and a peripheral wall, where a plurality of receptacles are defined in the peripheral wall. The peripheral wall is configured to be moved from a relaxed position to a flexed position by applying a first force to a first portion of the peripheral wall in a first direction and a second force to a second portion of the peripheral wall in a second direction. The lid includes a top wall and a plurality of projections. In the relaxed position, the lid is configured to engage the receptacles so as to retain the lid in a closed configuration. The container is configured to be moved from the closed configuration to an open configuration by moving the lid in a third direction while the peripheral wall is in the flexed position.

Lids for a container having an external peripheral rim at the upper end thereof, the lid comprising a top wall; a peripheral skirt depending downward from the top wall and having a bottom edge larger in diameter than the rim of the container and an inside surface with a locking mechanism disposed between the bottom edge and the top wall and being adapted to receive and engage the rim; and a plurality of slots defined in skirt extending upward from the bottom edge to divide the skirt into individually resiliently flexible skirt portions.

The present invention provides a storage tank which comprises a tank body and a sealing cover. A top of the tank body is provided with a tank mouth; the sealing cover can seal the tank mouth; the sealing cover comprises a main cover, a cover plate, a sealing ring, an annular extrusion part and a sealing switch; a top of the main cover is provided with an accommodating groove; the cover plate is covered on the accommodating groove; an edge of the cover plate is covered on the tank mouth; the sealing ring is sleeved and fixed on the outer circumference of the main cover; the annular extrusion part is slidably sleeved on the main cover below the sealing ring ; the sealing switch is located in the accommodating groove. The storage tank has good sealing effect, simple operation and convenient use.