Glass manufacturing – Means providing special atmosphere
Reexamination Certificate
2005-09-27
2005-09-27
Griffin, Steven P. (Department: 1731)
Glass manufacturing
Means providing special atmosphere
C065S134200, C065S346000, C266S210000
Reexamination Certificate
active
06948338
ABSTRACT:
A vacuum degassing apparatus for molten glass includes a vacuum housing; a vacuum degassing vessel provided in the vacuum housing; an uprising pipe which connects to the vacuum degassing vessel; and a downfalling pipe which connects to the vacuum degassing vessel. The vacuum housing has an accommodating portion to accommodate the uprising pipe and an accommodating portion to accommodate the downfalling pipe, at least one of which is divided horizontally into a plurality of sections to form a plurality of divided rooms juxtaposed in the vertical direction, and the respective divided rooms are provided with a pressure controller to control the pressures of the respective divided rooms independently.
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Itoh Hajime
Sakai Mitsuyoshi
Sasaki Michito
Asahi Glass Company Limited
Griffin Steven P.
Herring Lisa L.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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