Glass manufacturing – Processes – Fining or homogenizing molten glass
Reexamination Certificate
2009-01-30
2009-12-08
Griffin, Steven P (Department: 1791)
Glass manufacturing
Processes
Fining or homogenizing molten glass
C065S134400, C065S134200, C065S157000
Reexamination Certificate
active
07628038
ABSTRACT:
A system and method are described herein that control the environment (e.g., oxygen, hydrogen, humidity, temperature, gas flow rate, pressure) around one or more vessels in a glass manufacturing system. In the preferred embodiment, the system includes a closed-loop control system and a capsule that are used to control the level of hydrogen around the exterior (non glass contact surface) of the vessel(s) so as to suppress the formation of gaseous inclusions and surface blisters in glass sheets. In addition, the closed-loop control system and capsule can be used to help cool molten glass while the molten glass travels from one vessel to another vessel in the glass manufacturing system. Moreover, the closed-loop control system and capsule can be used to maintain an atmosphere with minimal oxygen around the vessel(s) so as to reduce the oxidation of precious metals on the vessel(s).
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DeAngelis Gilbert
Fraley Raymond E.
Girton Jeffrey D.
Lineman David M.
Murnane Rand A.
Chen Siwen
Cohen Jodi
Corning Incorporated
Griffin Steven P
Tucker William J.
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