Patent ID: 8317060

Claim:
A package with an overcap, said package comprising: a container having interior sides, a bottom and an opening at the top; and an overcap having a downwardly extending skirt with an inwardly facing surface engageable with the exterior outwardly facing surface of a container, and said overcap having an invertible dome which is transformable between an upward convex position and an upward concave position and engages the container more tightly in the upward concave position than in the upward convex position and engages the container more tightly in the upward concave position than in the upward convex position, wherein, in the upward convex position, the dome has a convex central portion with a dome center, the dome including vent channels formed into the bottom surface of the overcap extending from the dome center along the dome to the outer periphery of the overcap, which channels guide air therealong and out through the outer periphery of the overcap when the overcap is transformed from its upward concave position to its upward convex position.