The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 26, 2015

Filed:

Sep. 25, 2012
Applicants:

Chris Scott Kogge, Danville, KY (US);

Gautam Narendra Kudva, Horseheads, NY (US);

Michael Yoshiya Nishimoto, Shizuoka, JP;

Inventors:

Chris Scott Kogge, Danville, KY (US);

Gautam Narendra Kudva, Horseheads, NY (US);

Michael Yoshiya Nishimoto, Shizuoka, JP;

Assignee:

Corning Incorporated, Corning, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 17/06 (2006.01); C03B 17/04 (2006.01); C03B 33/02 (2006.01); C03B 33/037 (2006.01);
U.S. Cl.
CPC ...
C03B 17/068 (2013.01); C03B 17/064 (2013.01); C03B 33/0215 (2013.01); C03B 33/037 (2013.01);
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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