Patent ID: 6825448
Filing Date: 2004-11-30
Classification: H01L,H05B

Abstract:
A heater comprising:a heater body having an electrical heating element and a bottom surface; a rod configured to be coupled with an electrical power source; and a plug having a first end which is coupled to the heater body and extends into the heater body through the bottom surface of the heater body, and which is electrically connected with the electrical heating element, the plug having a second end which includes a cavity to receive a portion of the rod, the cavity being surrounded by a slotted side wall of the plug which is disposed outside of the heater body and includes a plurality of slots extending from the second end toward the bottom surface of the heater body and terminating near the bottom surface but before reaching the bottom surface, the slotted side wall being connected with the rod received into the cavity, the rod and the plug having different coefficients of thermal expansion.