Patent ID: 6285005
Filing Date: 2001-09-04
Classification: H05B

Abstract:
An enclosure for housing electronics or communications equipment having a minimum operating temperature, the enclosure comprising:a housing having a plurality of sidewalls, wherein each of the Plurality of sidewalls has an exterior surface and an interior surface and the interior surfaces of the plurality of sidewalls define an internal cavity for housing the electronics or communications equipment within a surrounding ambient;at least one heater assembly disposed within the internal cavity in open communication with the ambient, the heater assembly comprising at least one plate of positive temperature coefficient (PTC) material disposed between a pair of electrodes, the electrodes being connected to a source of power for generating current through the PTC material,wherein the heater assembly is adapted to maintain the ambient at a temperature equal to or above the minimum operating temperature of the electronics or communications equipment during operation of the equipment when the housing is mounted outdoors.