Patent ID: 6338259
Filing Date: 2002-01-15
Classification: C03B,Y02P

Abstract:
An apparatus for cooling a quartz tube used in fabrication of an optical fiber preform by modified chemical vapor deposition, comprising:a vent ring comprised of separated first and second arched vent sections; a coolant regulator connected to a coolant supply line to regulate a supply of coolant to said first and second arched vent sections, said first and second arched vent sections each including a plurality of vents for discharging said coolant onto said quartz tube; a coolant collector for collecting coolant discharged from said vent ring; a reservoir for containing the coolant collected by said coolant collector; a support bracket extending vertically upwards from said coolant collector; a first connecting arm pivotally connected to said support bracket at one end and connected at a distal end to said first arched vent section; a second connecting arm pivotally connected to said support bracket at one end and connected at a distal end to said second arched vent section; a first screw hole formed in said first connecting arm; a second screw hole formed in said second connecting arm; and a screw for being threaded through said first and second screw holes for firmly fastening said first and second connecting arms to complete a circular nozzle ring.