HEAT-SENSITIVE SWITCH Russian patent published in 2003 - IPC

FIELD: heat sensitive devices such as overtemperature warning devices. SUBSTANCE: heat-sensitive switch that can be used as temperature sensor, thermal relay, thermal fire alarm, and the like has shroud accommodating fixed and movable contacts and heat-sensing element made in the form of chute from foil strip material possessing shape memory effect. Movable contact of switch is built of movable and fixed parts. Movable part of this contact carries heat-sensing element fixed thereon in position and connected on one end at single point to fixed part of movable contact and its other end is disposed under movable part of movable contact. EFFECT: facilitated manufacture, enhanced operating precision and stability. 1 cl, 6 dwg