Tray transport cart having electromagnetic induction heaters for

Details Tray transport cart having electromagnetic induction heaters for Tray transport cart having electromagnetic induction heaters for

1993-10-07

1995-11-14

Leung, Philip H.

Electric heating

Inductive heating

With heat exchange

99451, 99DIG14, 219621, 219660, 312236, H05B 612

Patent

active

054669154

ABSTRACT:
A tray transport cart which accommodates trays for holding dishes for containing meals has a movable cart body with a plurality of tray carriers installed therein. Induction coils are inserted into the tray carriers for generating a local electromagnetic field. The trays hold the dishes which are provided with a current-conducting layer. An HF generator positioned on the cart body cooperates with the induction coils to produce the total inductance of the coils to generate a desired induction current in the current-conducting layer of the dishes, in the range between 32 .mu.H and 76 .mu.H, to maintain the meals contained in the dishes at warm temperatures.

REFERENCES:
patent: 3777094 (1973-12-01), Peters, Jr.
patent: 3786222 (1974-01-01), Harnden, Jr. et al.
patent: 3979572 (1976-09-01), Ito et al.
patent: 4020310 (1977-04-01), Souder, Jr. et al.
patent: 4235282 (1980-11-01), de Filippis et al.
patent: 5204504 (1993-04-01), Tanaka

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