THERMOSTAT ACTUATED BY AN EXPANDING WAX CAPSULE AND INCORPORATING A SAFETY DEVICE

摘要

A thermostat is actuated by a wax capsule adapted to operate on a main valve disposed in a fluid circuit immediately the temperature of the wax capsule exceeds a predetermined threshold. It comprises arrangements made at least in part from a single-acting memory alloy adapted to contribute to the operation of the thermostat only when their temperature is less than the transformation temperature of the alloy and to condition the flow of the fluid in the thermostat in the same direction as if the wax capsule had operated normally if the transformation temperature of the memory metal is exceeded.