H - Electricity – 05 – B
Patent
H - Electricity
05
B
309/14, 341/32.3
H05B 1/02 (2006.01) H02H 5/04 (2006.01) H05B 3/34 (2006.01) H05B 3/56 (2006.01)
Patent
CA 1228653
ELECTRICAL HEATING APPARATUS PROTECTED AGAINST AN OVERHEATING CONDITION AND A TEMPERATURE SENSITIVE ELECTRICAL SENSOR FOR USE THEREWITH Abstract of the Disclosure An electrical heating apparatus protected against an overheating condition and a temperature sensitive elec- trical sensor for the use therewith are disclosed. The electrical heating apparatus includes an electrical heating means for generating heat in proportion to the amount of electricity flowing through it, and it provides essentially all the heat for the apparatus. An electrical sensor is disposed in a thermally responsive relationship to the electrical heating means. The electrical sensor includes a pair of spaced flexible plastic conductors and a flexible temperature sensitive electrical impedance material having predetermined temperature coefficient impedance charac- teristics along its entire length. The temperature sen- sitive material is in electrical contact with the flexible conductors and controls the flow of electricity between them. A control means associated with the electrical heating means and the electrical sensor is responsive to a signal from the electrical sensor to control the electrical current flowing through the heating means.
463825
Fieldcrest Mills Inc.
Smart & Biggar
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