Back to results
US 2013/0340481 A1Published application
Active edge roll control in a glass drawing process
AssigneeCorning Incorporated
InventorsJames Gary Anderson, Lewis Kirk Klingensmith, James Paul Peris, David John Ulrich
Life of this patent
Estimating the term…
Abstract
An apparatus for drawing a glass ribbon including an edge roll assembly that contacts the glass ribbon with a force that is dynamically altered by an actuator electrically coupled to a sensor that measures the force applied against the ribbon. Dynamic, or real-time, variation of the edge roll force minimizes stress variability in the glass ribbon and improves ribbon shape control.
Claims8
An apparatus for drawing a glass ribbon comprising:
- an edge roll assembly comprising:
- a rotatable shaft;
- an edge roll coupled to the shaft that contacts an edge of the glass ribbon;
- a sensor configured to detects a tension force or a pinch force and develops an electrical signal proportional to the tension force or pinch force;
- a controller configured to receives the sensor signal and develops a corrective signal;
- and
- an actuator coupled to the edge roll shaft and configured to receives the corrective signal from the controller and vary the tension force or the pinch force in response to the corrective signal.
4 more elements
-20. (canceled)
Dependencies are inferred from the claim text.