Patent ID: 6604388
Filing Date: 2003-08-12
Classification: C03B,C03C

Abstract:
A solid state glass constituent delivery apparatus comprising:a tube for insertion into one end of a main glass tube; a flow of inert gas provided through said tube; a boat inserted into an output end of said tube, said boat containing a solid state form of the constituent; a heater to vaporize the constituent to form a vapor carried by the inert gas; the vaporization of the constituent accomplished at a given temperature providing a predetermined vaporization rate over time based on the two dimensional exposed surface of the constituent in the boat; an interface supported at the tube output end of said tube permeable to a regulated flow of a vapor form of the constituent therethrough but preventative of any flow in a backward direction into the tube so that the constituent is vaporized in the absence of any other glass forming components present within the main glass tube on an output side of the interface.