Glass manufacturing – Molten glass dispensing means
Reexamination Certificate
2005-11-07
2011-11-29
Daniels, Matthew (Department: 1741)
Glass manufacturing
Molten glass dispensing means
C065S099100
Reexamination Certificate
active
08065892
ABSTRACT:
A supplying tube for a molten glass, which is placed in a downstream end portion of a supplying passage directing the molten glass flowing out of a melting furnace to a forming vessel in a forming furnace, has a small diameter tube portion which has a small flow passage area and is provided at an upstream side, and a large diameter tube portion which is provided at a downstream side of the small diameter tube portion and has a large flow passage area. An expanded diameter tube portion of which flow passage area gradually expands toward the downstream side is interposed between the small diameter tube portion and the large diameter tube portion. The small diameter tube portion, the expanded diameter tube portion, and the large diameter tube portion may be integrally and continuously connected to one another.
REFERENCES:
patent: 2003/0029199 (2003-02-01), Pitbladdo
patent: 2003/0110804 (2003-06-01), Fenn et al.
patent: 2004/0154336 (2004-08-01), Pitbladdo
patent: 2006/0016219 (2006-01-01), Pitbladdo
patent: 2007/0068197 (2007-03-01), Pitbladdo
patent: 10-025120 (1986-01-01), None
patent: 61-021928 (1986-01-01), None
patent: 2001-080922 (2001-03-01), None
patent: 03/051783 (2003-06-01), None
Supplementary European Search Report issued Nov. 4, 2010 in corresponding European Application No. 05800316.1.
Daniels Matthew
Nippon Electric Glass Co. Ltd.
Szewczyk Cynthia
Wenderoth , Lind & Ponack, L.L.P.
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