Electrical temperature sensing device

Details Electrical temperature sensing device Electrical temperature sensing device

1977-06-01

1979-01-16

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Ambient temperature

338 25, 338256, 338268, 338270, 338302, H01C 702

Patent

active

041351797

ABSTRACT:
An electrical temperature sensing device for food heating appliances such as toasters and the like which is constructed to provide rapid thermal response, significant resistance variation as a function of temperature, and good mechanical strength so as to be suitable for mounting within the food heating compartment of said appliances in close thermal coupling with the bread or other food article to be heated. The temperature sensing device is in the form of an elongated tubular structure shaped in a U configuration, comprising a central core of low mass insulating material upon which is wound a helical wire of temperature sensitive resistance material. A thin walled sleeve of insulating material fits tightly over the wire wound core, and a thin walled metal tubing of good heat conduction characteristics fits tightly over the insulating sleeve.

REFERENCES:
patent: 2149448 (1939-03-01), Lederer et al.
patent: 2549211 (1951-04-01), Lamm
patent: 2581213 (1952-01-01), Spooner, Jr.
patent: 2588014 (1952-03-01), Knudsen
patent: 2946974 (1960-07-01), Sias
patent: 3546654 (1969-02-01), Rogal et al.

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