Patent ID: 8096436

Claim:
Household appliance ( 1 ) for cooking food under pressure, comprising: a bowl ( 2 ) with a bottom ( 2 A) and a side wall ( 2 B) rising up from said bottom ( 2 A) and circumscribing an opening ( 2 C), a lid ( 3 ) intended to be associated with the bowl ( 2 ) to form therewith a cooking chamber, the cooking chamber having an inside between said bottom and said lid, wherein the outside is the ambient environment, a sealing gasket ( 4 ) interposed between the side wall ( 2 B) and the lid ( 3 ), said gasket ( 4 ) being designed to be in contact with the side wall ( 2 B) as long as the pressure inside the chamber does not exceed a predetermined safety value, so as to impart a substantial leaktightness to the cooking chamber, said appliance ( 1 ) being designed so that, when the pressure inside the chamber reaches the predetermined safety value, the gasket ( 4 ) moves at least locally relative to the side wall ( 2 B) up to reach a predetermined safety position, said appliance ( 1 ) being characterized in that, on the one hand, said lid ( 3 ) comprises a main body ( 3 A) having a periphery from which and at the periphery of which extends a falling edge ( 3 B), the falling edge ( 3 B) being designed to be disposed inside the bowl ( 2 ) and to be surrounded by the side wall ( 2 B) when the lid ( 3 ) is fitted onto the bowl ( 2 ), and on the other hand, the side wall ( 2 B) comprises at least a geometrical irregularity ( 10 , 12 ) intended to interact with the gasket ( 4 ) when the latter is located at the predetermined safety position thereof so as to interrupt, near the irregularity ( 10 , 12 ), the contact between the gasket ( 4 ) and the side wall ( 2 B) and thus to authorize a steam leakage from the inside to the outside of the chamber.