Itw Limited

Terry A Pothoven

Floyd Pothoven

A lamphas a bodyof sintered alumina ceramic material and an artificial sapphire window. The bodyis initially molded in green state and the window is pressed into a front recess. The combination is fired at a temperature of the order of 1500&#xb0; C., to fuse the body into a coherent pressure-tight state with the window. After partial cooling to the order of 600&#xb0; C., a pellet of excitable material is added through a rear, charging aperture. A discof ceramic with fritis placed over the aperture. The disc is irradiated by laser to fuse the frit and the disc to the body, thus sealing the excitable material into the lamp.

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Lakewood, CA, United States of America

Terry A Pothoven