Foods and beverages: apparatus – Cooking – Automatic control
Reexamination Certificate
2000-07-12
2001-01-30
Simone, Timothy F. (Department: 1761)
Foods and beverages: apparatus
Cooking
Automatic control
C099S331000, C099S337000, C099S403000, C219S492000, C219S497000, C219S453130, C219S506000, C220S314000, C220S316000, C220S912000
Reexamination Certificate
active
06178876
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a pressure cooker. More particularly, the present invention relates to a pressure cooker which has a heating device.
A conventional pressure cooker has a main body, a cover disposed on a top portion of the main body, and an exhaust steam valve disposed on the cover. When beans or powders of food are cooked, the exhaust steam valve will be choked easily. Therefore, an inner pressure of the conventional pressure cooker will be increased so that the conventional pressure cooker may be exploded.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a pressure cooker which has a heating device can be detached from a main body of the pressure cooker in order to heat various types of cookers.
Accordingly, a heating device comprises a bottom casing, an upper casing engaging with the bottom casing, a thermal conducting plate disposed on the upper casing, and a thermal generating device disposed between the thermal conducting plate and the bottom casing. A plurality of sockets are disposed on the bottom casing. A plurality of pedestals are inserted in the sockets. Each of the pedestals has an upper pillar and an oblong hole formed in the upper pillar. A plurality of elastic elements each encloses the respective upper pillar. A flat insulation plate is disposed on the elastic elements. The flat insulation plate has a plurality of through holes each matching the respective oblong hole of the upper pillar. The thermal generating device has a dish disposed on the flat insulation plate, a corrugated insulation plate disposed on the dish, and a plurality of heaters disposed on a bottom of the thermal conducting plate. A plurality of bottom posts are disposed on a bottom of the dish. Each of the bottom posts is inserted through the respective through hole of the flat insulation plate and inserted in the respective oblong hole of the upper pillar. An electric circuit board is disposed in the bottom casing. An electric control board is disposed on the upper casing. A plurality of wires are connected to the electric circuit board and the heaters.
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patent: 5673611 (1997-10-01), Tieman
Kamrath Alan
Simone Timothy F.
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