Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1975-10-31
1976-11-30
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219441, 219464, 219505, 219521, 219541, 338 22R, F27D 112
Patent
active
039951413
ABSTRACT:
A food warmer comprising a heat transfer plate with a flat portion and a flange of thermally and electrically conductive material to which at least one pill of positive temperature coefficient of resistance material is conductively secured and an electrically insulative base with a trough for receiving the rolled edge of the heat transfer plate. The pill is provided with an electrically conductive coating on its two opposite faces. An electrically conductive spring is mounted in the base adapted to make contact with one surface of the electrically conductive coating of the pill. Electrical connection is made to the heat transfer plate and to the spring to provide a current path through the pill upon positioning and sealing the rolled edge with a silicon rubber sealing compound thereby providing proper contact force and alignment between the spring and the conductive coating of the pill along with a water tight seal.
REFERENCES:
patent: 2606986 (1952-08-01), Sweger
patent: 2961524 (1960-11-01), Newman
patent: 3400247 (1968-09-01), Deacon
patent: 3519798 (1970-07-01), Walther
patent: 3720807 (1973-03-01), Ting
patent: 3748439 (1973-07-01), Ting et al.
patent: 3749879 (1973-07-01), Armstrong
patent: 3778594 (1973-12-01), Wightman
patent: 3876861 (1975-04-01), Wightman et al.
patent: 3891827 (1975-06-01), Wyse
Ting Youn Hung
Vieau David Pierre
Baumann Russell E.
Haug John A.
Mayewsky Volodymyr Y.
McAndrews James P.
Texas Instruments Incorporated
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