Thermal pads for heatable turntable

Details Thermal pads for heatable turntable Thermal pads for heatable turntable

1991-08-14

1993-02-23

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219218, 219464, H05B 372

Patent

active

051892820

ABSTRACT:
A heatable turntable is provided for efficiently warming and serving food. A deck is rotatably mounted on a base. Electrical current is supplied from a power supply in the deck to thermal pads located in the deck via wires connected to sliding pole pieces attached to the base and deck. Individual thermostats are provided for each thermal pad to prevent overheating when a pad is unoccupied. Each thermal pad is located within a recess in the deck such that each pad extends out of the recess to permit air to flow between the deck and an object placed on the pad, whereby efficient heat exchange is promoted. Also, each thermal pad has a heating element comprising a resistance plate sandwiched between two mica insulation plates. The heating surface of each pad can be concave shaped towards this sandwich and has a lower lip which compresses the sandwich towards the heating surface. In addition, the sandwich is biased towards the concave heating surface by a screw actuated bracket. A system of heating turntables is also provided by electrically interconnecting a plurality of turntables.

REFERENCES:
patent: 918747 (1909-04-01), Hertzberg
patent: 1170169 (1916-02-01), Kuhn
patent: 1227721 (1917-05-01), Wilkinson
patent: 1432491 (1922-10-01), Phelps
patent: 1975464 (1934-10-01), Juengst

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