US Patent 8215513 Self-closing resealable can end

A self-closing resealable can end for a beverage container that opens the top of the beverage container through downward pressure that causes a gate to move downward relative to the top panel. The gate is retained by a resilient member and when the downward pressure ceases, the gate is moved into proximity with the top panel. Pressure from the carbonation presses the gate against a lip and the gate bends to form an enhanced seal. Other variations are disclosed.