US PATENT SUBCLASS 219 / 448.19
.~.~.~.~.~ By rod or wire in a tube (e.g., thermo-cutoff probe, etc.)

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
385  DF  .~ Combined with container, enclosure, or support for material to be heated {12}
443.1  DF  .~.~ Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) {13}
446.1  DF  .~.~.~ Having sensor {2}
448.11  DF  .~.~.~.~ Responsive to temperature {4}
448.19.~.~.~.~.~ By rod or wire in a tube (e.g., thermo-cutoff probe, etc.)

DEFINITION

Classification: 219/448.19

By rod or wire in a tube (e.g., thermo-cutoff, probe, etc.):

(under subclass 448.11) Subject matter wherein the temperature sensor consists of a pole or a flexible metallic thread in a hollow elongated cylinder having different coefficients of heat expansion whereby a change in temperature results in a relative change in length between the pole or the flexible metallic thread and the hollow elongated cylinder.