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US 5,173,102 AGranted
Apparatus for curving glass sheets
AssigneeSaint-Gobain Vitrage International
InventorsFrederic Weber, Claude Didelot
Life of this patent
Estimating the term…
Abstract
A curving furnace has at least one curving station, of which the walls are equipped with resistors. The series of upper resistors are subdivided into one or more axial zones in which the resistors are oriented parallel to the height of the glass sheets, and into one or more transverse zones in which the resistors are oriented perpendicularly. The heating power of a given zone is regulated independently of the heating powers associated with the other zones.
Claims10
An apparatus for curving glass sheets mounted on curving molds, comprising:
- a furnace having at least one heating section;
- means for carrying a curving mold through the heating section in a direction parallel to the height of the glass sheets;
- a curving mold carried by said carrying means through the at least one heating section;
- a plurality of heating elements mounted in said at least one heating section, including a plurality of heating elements positioned above said curving mold and comprising:
- a) a plurality of heating elements forming a plurality of axial heating zones and extending in the direction of the height of the glass sheets, and
- b) another plurality of heating elements forming a central transverse heating zone positioned between said axial heating zones and extending transverse to the height of the glass sheets;
- and
- means for independently supplying heating power to the heating elements of each of said heating zones.
5 more elements
Dependencies are inferred from the claim text.