Container with pressure-release lid

A container and a rocking lid for use in conjunction with said container, said container having an open mouth defined by a peripheral planar edge and a peripheral wall depending from said planar edge, said peripheral wall including a sealing surface thereabout, said rocking lid comprising a top member adapted to overlie and cover the container mouth said top member including a downwardly facing base surface and a peripheral sealing flange depending from said base surface for engagement with the sealing surface of the container wall, said base surface defining a first plane coextensive with and positionable in overlying engagenment with a portion of the peripheral planar edge and a second plane upwardly angled related to firs plane, fulcrum means between said planes engageable against the peripheral planar edge for rocking of said lid to engage said second plane with the peripheral planar edge and position said first plane in upwardly angled relation thereto, said peripheral sealing flange having a lower edge generally parallel to said first plane.

The container and rocking lid of claim 8 wherein said top member includes a lip portion extending radially outward of said sealing flange and peripherally thereabout, said lip portion having planar undersurfaces defining said first and second planes.

A removable closure for a container having an open container mouth defined by a mouth edge, said removable closure comprising:

• a rocking lid mountable on said container for movement between an open position and a closed position relative to the container mouth, said lid having a top member for overlying the container mouth, said top member including a base surface and a sealing flange depending from said base surface for engagement with the container, fulcrum means on said base surface engageable with the mouth edge and dividing said base surface into a first section and a second section, said first section being engageable with the mouth edge simultaneous with said fulcrum means and defining a common support plane with said fulcrum means to parallel the mouth edge in the closed position of the lid, said sealing flange depending below said common support plane for engagement with the container in the closed position of the lid, said second section being upwardly offset from the common support plane of the first section for positioning above the container mouth whereby pivoted movement of said second section downward about said fulcrum means toward the mouth edge will effect a pivotal upward movement of said first section away from the mouth edge.