Pressure cooker with overpressure safety device, and gasket for such a cooker

摘要

The cooker has a container, a lid (2) and a tight joint (7) that are designed such that an interstitial space presents a critical dimension when the pressure in an enclosure attains a preset critical safety value. Difference between critical dimension and an initial dimension presented by the space is large so that tight contact between the joint and a lateral wall (1A) and/or the lid is ruptured to decompress the enclosure.