Extension thermostat for electric heating element control

Details Extension thermostat for electric heating element control Extension thermostat for electric heating element control

A - Human Necessities

45

D

309/8

A45D 1/04 (2006.01) B23K 3/03 (2006.01) G05D 23/275 (2006.01) H01H 37/48 (2006.01) H05B 1/02 (2006.01)

Patent

CA 1071279

ABSTRACT OF THE DISCLOSURE An extension thermostat for controlling the energiza- tion of an electric heating element of e.g. a curling iron has a rod extending along the interior of a sensing tube which is inserted into the heating element, the rod having a lower co- efficient of thermal expansion than the heating tube. The rod is secured to the tube at one point, and the tube is secured at a different point, whereby the rod moves within the tube on ex- tension and contraction of the tube in response to temperature variations. One end of the rod engages one arm of a double- armed lever, the other of which is connected through a tempera- ture adjustment mechanism to a switch for opening and closing a current path to the heating element. By adjusting the mechan- ism, the operating temperature of the curling iron can be regulated.

264918

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