초록 ▼

A plug fixed within a provided opening in the wall of a pressure cooker releases therefrom when excessive pressure builds up in the cooker. The plug contains an air vent in which a pressure-actuated closure member operates. The closure member has an outer head which rests on the plug about the air v

A plug fixed within a provided opening in the wall of a pressure cooker releases therefrom when excessive pressure builds up in the cooker. The plug contains an air vent in which a pressure-actuated closure member operates. The closure member has an outer head which rests on the plug about the air vent when the cooker is in an unpressurized state, a stem which loosely extends through the air vent and an inner head having a shoulder which sealingly engages the underside of the plug about the air vent to close the cooker interior to atmosphere, the inner head also having a larger diametered flange which catches the cooker wall when the plug is ejected from the provided opening in response to excessive pressure build up in the cooker.

대표청구항 ▼

In combination, a pressure cooker having a wall, a vent pipe fixed in said wall, having a pressurizing regulator mounted thereon to maintain the cooker at a set cooking pressure and an over-pressure plug fixed within an opening in said wall so as to be ejected therefrom by pressure developed in the

In combination, a pressure cooker having a wall, a vent pipe fixed in said wall, having a pressurizing regulator mounted thereon to maintain the cooker at a set cooking pressure and an over-pressure plug fixed within an opening in said wall so as to be ejected therefrom by pressure developed in the cooker which exceeds that for which the regulator is set, said over pressure plug containing an aperture and a plunger including a stem extending through said aperture having an outer head which overlies the outer side of the over-pressure plug and an inner head having a shoulder portion to engage the underside of the plug about the aperture, said outer head and shoulder portion being spaced apart a distance greater than the axial length of the aperture, said plunger reacting to pressure developed in the cooker to lift the outer head off the plug when the cooker is in a pressurized state, and the inner head of the plunger having spaced abutment portions which engage the underside of the cooker wall about the opening when the overpressure plug is ejected from the opening so as to retain the plug and its plunger captivated by the cooker, said inner head providing exits between the abutments for fluids to escape from the cooker through the vacated opening to reduce the developing pressure in the cooker.