Elements for bending plates made of a material in the plastic state, use of such elements for bending and hardening plates and a device equipped with such elements
AssigneeSaint-Gobain Vitrage
InventorClaude Presta
Life of this patent
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Abstract
An element for bending or hardening a movable plate in a plastic state. The element has a surface adapted to contact the plate where the surface has a plurality of bending profiles taken in a plane at right angles to the direction of movement of the plate. Means are provided to rotate the element in the plane in order to vary the radius of curvature of the surface contacting the plate.
Claims19
An element for bending or hardening a movable plate of a material in a plastic state where the element is adapted to be positioned below said movable plate to support the same, characterized in that the surface of said element contacting the plate has a plurality of bending profiles taken in a plane perpendicular to the direction of movement of the plate, in that adjacent bending profiles blend smoothly with one another and in that said surface has a radius of curvature which varies in a continuous manner over the complete length of the surface, and in having adjustment means for relatively moving a plate over different longitudinal portions of said surface.
A device for bending or hardening a movable sheet or plate of glass in a plastic state including an element having a surface adapted to contact said sheet where said surface is in the form of a spiral over its complete length oriented toward the sheet and wherein the element is positioned at a right angle to the direction of movement of the sheet through the device and including adjustment means to impart relative movement between said plate and different longitudinal portions of said surface.
A device for bending or hardening a sheet of glass in a plastic state including at least one element positioned to one side of said sheet to contact the same and means for moving the sheet through the device, characterized in that the surface of said element contacting the plate has a plurality of bending profiles taken in a plane perpendicular to the direction of movement of the sheet through the device and has adjustment means for turning each element in said plane while maintaining an uppermost point of the surface of the element contacting the sheet at a fixed point.
Dependencies are inferred from the claim text.