Glass manufacturing – Processes – Forming product or preform from molten glass
Reexamination Certificate
2008-10-24
2011-11-15
Crispino, Richard (Department: 1747)
Glass manufacturing
Processes
Forming product or preform from molten glass
C065S127000, C065S112000, C065S105000
Reexamination Certificate
active
08056364
ABSTRACT:
A preform production apparatus for precision press molding, which is downsized but can produce preforms at a lower cost, and a production method thereof using the apparatus are provided. The production method of a preform for precision press molding includes forming a molten glass body C by way of receiving and cutting molten glass A, being flowed continuously from a discharge nozzle2, by a support member1or by way of allowing molten glass to fall in drops from a discharge nozzle2and receiving thereof by a support member1, and transferring the molten glass body C from the support member1to a mold5by way of displacing the support member to near the mold5, disposed not to be beneath the discharge nozzle2, while increasing the viscosity of the molten glass body C on the support member1.
REFERENCES:
patent: 2004/0237592 (2004-12-01), Iguchi et al.
patent: 2006/0260361 (2006-11-01), Yoshida et al.
patent: 10-338530 (1998-12-01), None
patent: 2000-007360 (2000-01-01), None
Aoe Shinobu
Sakai Ryousuke
Shinozaki Tadanao
Crispino Richard
Hoffman & Baron LLP
Mayes Dionne W
Ohara Inc.
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