Method and device for refining a glass melt using negative...

Glass manufacturing – Processes – Fining or homogenizing molten glass

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C065S134900, C065S135100, C065S157000, C065S346000, C065S374120

Reexamination Certificate

active

10415772

ABSTRACT:
The apparatus for reduced-pressure refining of a glass melt includes a refining bank formed so that a reduced pressure is generated by a glass flow in it. The refining bank has a component, which is made from a refractory metal or refractory alloy acting as glass-contact material. The refractory metal or alloy contains molybdenum, tungsten, tantalum, and/or hafnium. The device of the present invention includes a protective gas reservoir for a protective gas and an automatically operating valve connecting the reservoir with the refining bank so that an inner side of the component that would otherwise be exposed when a pressure rise or a falling glass melt column occurs is protected from oxidation by the protective gas. A process for using the device during refining of the glass melt is also part of the invention.

REFERENCES:
patent: 1598308 (1926-08-01), Pike
patent: 3519412 (1970-07-01), Olink
patent: 4351664 (1982-09-01), Bansal
patent: 6460376 (2002-10-01), Jeanvoine et al.
patent: 33 20 980 (1984-12-01), None
patent: 33 20 980 (1984-12-01), None
patent: 0 908 417 (1999-04-01), None
patent: 0 918 417 (1999-04-01), None
patent: 172 610 (1922-09-01), None
Patent Abstracts of Japan vol. 14, No. 531, Nov. 21, 1990 & JP 02 221129 A, Sep. 4, 1990.
Patent Abstracts of Japan vol. 2000, No. 06, Sep. 22, 2000 & JP 2000 086249 A, Mar. 28, 2000.
Patent Abstracts of Japan vol. 2000, No. 12, Jan. 3, 2001 & JP 2000 247647 A, Sep. 12, 2000.
Database WPI, Section Ch, Week 16, Derwent Publications Ltd., London, GB, AN 1998-177524 XP 002188856 & RU 2 087 428 A, Aug. 20, 1997.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and device for refining a glass melt using negative... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for refining a glass melt using negative..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for refining a glass melt using negative... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3850061

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.