C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/023 (2006.01) C03B 7/088 (2006.01)
Patent
CA 2231360
Apparatus for forming a cased glass stream having an inner core glass surrounded by an outer casing glass includes a first orifice for receiving core glass from a first source, and a second orifice vertically spaced beneath and aligned with the first orifice. A chamber surrounds the second orifice and communicates with the second orifice through a metering gap between the first and second orifices. Casing glass is delivered from a second source to one side of the chamber such that glass flows by gravity from both the first and second sources through the orifices to form the cased glass stream. In accordance with one aspect of the present invention, the metering gap is of non-uniform dimension around the chamber, providing greater resistance to glass flow through the metering gap on a side thereof adjacent to the side of the chamber that receives casing glass from the second source and less resistance to glass flow through the metering gap on the side thereof remote from the side of the chamber that receives the casing glass.
Cette invention concerne un dispositif de formation d'un flux de verre doublé composé d'une couche de coeur entouré d'un couche gaine. Ledit dispositif comporte un premier orifice recevant la couche de coeur d'une première source et un second orifice disposé directement sous le premier et espacé de celui-ci. Une enceinte entoure le second orifice et communique avec celui-ci via l'espace de dosage ménagé entre les deux orifices. Le verre formant la couche gaine est acheminé d'une seconde source vers un côté de l'enceinte de sorte que le verre s'écoule par gravité des deux orifices pour former un flux de verre doublé. Selon un aspect de la présente invention, l'espace de dosage est inégal autour de l'enceinte et offre une plus grande résistance à l'écoulement du verre du côté de l'enceinte où arrive le flux de verre devant former la couche gaine et une plus faible résistance du côté opposé.
Dembicki Michael T.
Scott Garrett L.
Gowling Lafleur Henderson Llp
Owens-Brockway Glass Container Inc.
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