Apparatuses for manufacturing glass and methods of managing pulling forces applied to glass ribbon
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United States of America Patent
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May 26, 2015
Grant Date -
Mar 27, 2014
app pub date -
Sep 25, 2012
filing date -
Sep 25, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatuses for managing pulling forces applied to a glass ribbon in a draw apparatus are disclosed. The method includes applying a front-side and a rear-side drive torque to a glass. The method further includes calculating automatically with the at least one electronic controller a front-side and a rear-side average pulling force applied to the glass ribbon and corresponding to a first time period of at least one rotation of the front-side or rear-side stub roller, respectively. The front-side average pulling force and the rear-side average pulling force are compared to establish a pulling force differential between the front-side average pulling force and the rear-side average pulling force. One or more of the front-side drive torque or the rear-side drive torque are modified to decrease the pulling force differential between the front-side average pulling force and the rear-side average pulling force.
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