APPARATUS FOR CONTROLLING TEMPERATURE OF ELECTRIC HEATING EQUIPMENT Russian patent published in 2002 - IPC

FIELD: measuring technique, possibly instrument making, particularly switching temperature pickups for refrigeration and firing equipment. SUBSTANCE: apparatus includes switching lever continuously forced by means of microswitch arm jammed between body and contact spring of microswitch. Elastic tag of contact spring rests upon body and creates springing effort from microswitch arm to contact group. Additional spring of microswitch increases contact effort in zones of switching and joining with switching lever. Free axial motion of microswitch lever exceeds axial motion of contact spring of microswitch; spring performs such motion in point of its contact with microswitch arm from time moment of starting motion until time moment of microswitch operation by value of possible movement of switching lever after operation of microswitch. EFFECT: enhanced stability of operational parameters according to temperature, improved switching capability, increased useful life period. 1 dwg