Lid knob of pressure cooker

Details Lid knob of pressure cooker Lid knob of pressure cooker

1984-01-12

1985-10-22

Frankfort, Charles

Signals and indicators

Alarms

Fluid-pressure variation

116 67R, 116137R, 99342, G10K 500, G08B 300, A47J 3606

Patent

active

045481563

ABSTRACT:
A lid knob for a pressure cooker contains a whistle which informs the user when boiling has occurred. The lid knob is designed so that the whistle hole of the knob may be rotated into alignment with the steam hole of the lid of the pressure cooker during initial heating and then rotated out of alignment with the steam hole once boiling has occurred. The lid knob is simple in structure and is easy to disassemble for cleaning.

REFERENCES:
patent: 4155349 (1979-05-01), Hudson
patent: 4418637 (1983-12-01), Heermans

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