Abstract: A container closure assembly comprising a rigid lid and a separately formed flexibly resilient sealing member mounted to the lid and moveable with the lid between closed and open positions relative to the container. Rocking lugs are integrally formed with either the lid or the seal member for a rocking of the lid to an open position for removal from the container. Cooperating positioning lugs are provided to position the closed lid, with seal member, relative to the container mouth.

Abstract: A mixing bowl of generally arcuate configuration and including laterally spaced stabilizing ribs extending along the outer surface thereof between the base and a mouth-defining rim. The ribs, upon an inclination of the bowl, continuously define a laterally extending support plane. The interior of the bowl is of a hard smooth material while the exterior thereof is of a non-slip friction-enhancing material. The open mouth of the bowl is surrounded by an outwardly flaring rim with a grip-enhancing undersurface.

Abstract: A seal for a container having an outwardly directed annular rim. The seal includes a top panel with a central section and an annular lever section integrally joined to the central section by a living hinge. A side wall integrally depends from the outer periphery of the lever section and includes an inwardly directed concavity for receiving the rim edge. A continuous convexity below the concavity provides for a snap-mounting of the seal to the container rim and a vertical skirt below the convexity provides for a guide for mounting the seal. A fulcrum rib depends from the undersurface of the lever section and engages the container rim on a depression of the top panel at the hinge to swing the side wall away from the rim. Vent openings are provided through both the fulcrum rib and the convexity to maintain pressure release air flow as the seal is mounted and removed.

Abstract: A container lid engageable with the planar outer edge of a container mouth in overlying sealing relation to the mouth. The lid includes a depending peripheral sealing flange engaged with the container adjacent the mouth, and a top panel with a base surface having a pair of spaced fulcrums seated on the mouth edge. The top panel is divided by the fulcrums into a first major portion and a second minor portion. When the lid seals the container the under or base surface of the major portion parallels the mouth edge with the flange engaged with the container wall completely about the mouth. The minor portion of the top panel of the lid includes an under or base surface upwardly angled or offset from the mouth edge in the sealed position of the lid whereby pressure on the minor portion pivots the lid about the fulcrums and upwardly releases the major portion of the lid and corresponding portion of the flange from the container mouth.