Air ventile for pressure cookers and pressure cookers having the

Details Air ventile for pressure cookers and pressure cookers having the Air ventile for pressure cookers and pressure cookers having the

1992-12-16

1993-12-14

Rivell, John

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

137 74, 220 894, 220203, F16K 1728, F16K 1738

Patent

active

052693368

ABSTRACT:
There is provided a novel dual functioning, dual metal safety release valve for a pressure cooker. This valve comprises a metallic retainer member having a bore therein in which is held a fusible metal alloy. The metallic retainer is held in a suspended manner loosely in an opening in the lid of the pressure cooker contrary to the conventional manner in which the said release valve is sealingly fitted to the pressure cooker. The safety release valve is held at a specific angle and is so fabricated that when the pressure cooker is in operation, the safety release valve remains in suspended condition in the opening of the lid of the cooker, thereby letting air to escape first and when substantially all the air has escaped, the developing steam pressure forces the safety release valve upwards and a sealing of the opening in the lid of the cooker is achieved.

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patent: 5135121 (1992-08-01), Javier

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