A closure can close an outlet of a vessel. The vessel outlet can comprise a tubular cavity with an interior surface. The closure can comprise a male portion comprising a distal undersized portion, a proximal oversized portion, and a taper between the undersized and oversized portion. The male portion can be inserted in the vessel outlet, undersized portion first. Interference between the inner diameter of the vessel outlet and the outer diameter of male portion can occur when the male portion is sufficiently inserted. The interference can cause the undersized portion to flare out and engage the interior surface of the tubular cavity, thereby providing a seal.

A container closure. The closure comprises a pressure closure assembly and an outer release shell configured to be coupled thereto. The assembly comprises a relief valve and an inner shell having a base wall, a pressure relief slot, and an outer skirt extending away from the base wall and including first and second portions. The release shell includes a first portion having a base wall configured to overlap a portion of the inner shell base wall, and a tab corresponding to the slot of the inner shell. The first portion further includes an outer skirt extending away from the first portion base wall and configured to wrap around the first portion of the outer skirt. The release shell further includes a second portion having a base wall configured to overlap a portion of the inner shell base wall, and an outer skirt extending away from the second portion base wall.

A closure can close an outlet of a vessel. The vessel outlet can comprise a tubular cavity with an interior surface. The closure can comprise a male portion comprising a distal undersized portion, a proximal oversized portion, and a taper between the undersized and oversized portion. The male portion can be inserted in the vessel outlet, undersized portion first, to close the vessel. A releasable catch can facilitate closing and opening the vessel repeatedly. A pull ring can support opening the vessel or closing the vessel or toting the vessel or any combination of opening, closing, and toting the vessel. The pull ring can have one or more associated hinges.

A closure element of the press-twist type for closing a container comprises: a capsule having a side wall extending about an axis, and a transverse panel extending transversely to said axis, an annular seal for sealingly engaging with a mouth of the container. The annular seal is made of a PVC-free material and comprises: a side portion arranged in contact with the side wall of the capsule; a front portion extending from the side portion towards said axis; a deformability promoting element for increasing deformability of the front portion, the deformability promoting element comprising a recessed zone configured to be at least partially filled by the material forming the front portion when the front portion is pressed against an edge of the container delimiting the mouth.

A closure can close an outlet of a vessel. The vessel outlet can comprise a tubular cavity with an interior surface. The closure can comprise a male portion comprising a distal undersized portion, a proximal oversized portion, and a taper between the undersized and oversized portion. The male portion can be inserted in the vessel outlet, undersized portion first. Interference between the inner diameter of the vessel outlet and the outer diameter of male portion can occur when the male portion is sufficiently inserted. The interference can cause the undersized portion to flare out and engage the interior surface of the tubular cavity, thereby providing a seal.

A closure can close an outlet of a vessel. The vessel outlet can comprise a tubular cavity with an interior surface. The closure can comprise a male portion comprising a distal undersized portion, a proximal oversized portion, and a taper between the undersized and oversized portion. The male portion can be inserted in the vessel outlet, undersized portion first. Interference between the inner diameter of the vessel outlet and the outer diameter of male portion can occur when the male portion is sufficiently inserted. The interference can cause the undersized portion to flare out and engage the interior surface of the tubular cavity, thereby providing a seal.

Various implementations include a container system that includes a first and second bowl. The first bowl has a resilient wall that is urgable radially outwardly from a resting position to an expanded position. The edge of the resilient wall spaced apart from a first bowl base has a resting perimeter length and an expanded perimeter length. A rigid wall of the second bowl has a first edge spaced apart from a second bowl base and a second edge opposite the rigid wall first edge each have a perimeter length. The perimeter lengths of the rigid wall are both greater than or equal to the resting perimeter length and are less than or equal to the expanded perimeter length. A groove is defined by the resilient wall and/or rigid wall. A protrusion extends along the other of the rigid wall and/or resilient wall. The protrusion is engageable within the groove.

A drinking container is provided that can include a lid member and a cup member. The lid member can include a base member and a spout extending up from the base member. The spout can provide a fluid passageway from outside the drinking container to the volume of the cup member so that a child may drink liquid contained within the cup member. When the lid member is removably coupled to the cup member, two or more seals are created around the circumference of the drinking container between the lid member and the cup member to decrease the likelihood of leakage from between the cup member and the lid member when the lid is coupled to the cup member.

A bottle cap capable of being opened by one press, comprising a bottle mouth (11) and a bottle cap (1), and further comprising a positioning ring (3), a fixing ring (10), and an oval elastic snap ring (8). A slot (13) is provided between the positioning ring (3) and the fixing ring (10); the two major axis ends of the elastic snap ring (8) are located in the slot (13); either of the two major axis ends of the elastic snap ring (8) is provided with a press piece (7); a groove (12) is circumferentially formed on the side wall of the bottle mouth (11) at a position corresponding to the elastic snap ring (8); the two minor axis ends of the elastic snap ring (8) are located in the groove (12) to lock the connection of the bottle cap (1) to the bottle mouth (11), and are configured to stretch as the press piece (7) is pressed, so as to disengage from the groove (12) and enter the slot (13), thereby unlocking the connection of the bottle cap (1) to the bottle mouth (11).

The present disclosure relates generally to containers and container lids. In at least one embodiment, the disclosed containers and container lids provide a liquid-tight seal without the use of gaskets, and can facilitate full submersion of solid items when the container is filled with liquid. For example, in certain embodiments, a container lid includes a brine disc panel with alternating hatched patterns of downward protruding ridges. Thus, in these embodiments, liquids within the container can pass between the protruding ridges (e.g., with the protruding ridges extending downwardly into the liquid) and the protruding ridges may keep solids that tend to float in the liquid below a surface of the liquid.