Electric heating – Metal heating – Of cylinders
Patent
1975-10-21
1977-08-09
Spar, Robert J.
Electric heating
Metal heating
Of cylinders
206504, 426241, H05B 906
Patent
active
040412660
ABSTRACT:
A tray for use in an electromagnetic oven supplying differing quantities of electromagnetic energy to a variety of load items which are located within the oven cavity. A food or material bearing tray inserted into the oven positions a conductive energy shield to interfit with elements on the tray to isolate selected items from the electromagnetic energy. The conductive shield cooperates with a shaped interior wall of the oven to provide a desired non-uniform distribution of electromagnetic energy over those regions of the tray which are not shielded. An improved sensor assembly located on the tray controls an assembly in the oven to inhibit and terminate the heat cycle as desired. The tray further includes conductive base strips with upstanding flange members defining the shielded region with the base strips recessed into the surface of the tray to prevent energy from entering into this shielded area. Where the upstanding flanges meet the base strip, a molded lip is provided in the tray surface to form a seal preventing food and miscellaneous other materials from accumulating or entering this area. The tray is provided with extending portions or feet located at the edges of the tray that contact supporting rails in a storage rack upon insertion and removal. The feet facilitate handling of the loaded trays when stacked and maintain the trays in a nearly level manner during insertion and removal. The feet have a surface designed to cooperate with the contacting surfaces of the storage racks.
REFERENCES:
patent: 2886225 (1959-05-01), Clarke
patent: 3271169 (1966-09-01), Baker et al.
patent: 3454947 (1969-07-01), Wesch et al.
patent: 3525841 (1970-08-01), Haagensen et al.
patent: 3651300 (1972-03-01), Haagensen
patent: 3767884 (1973-10-01), Osepchuk et al.
patent: 3843859 (1974-10-01), Klemp et al.
patent: 3854022 (1974-12-01), Moore
Chemetron Corporation
Esser N. M.
Noland Kenneth
Spar Robert J.
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