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.
Patent No.:
Date of Patent:
Mar. 29, 2016
Filed:
Mar. 11, 2014
Corning Incorporated, Corning, NY (US);
Paul Gregory Chalk, Corning, NY (US);
Ahdi El Kahlout, Lexington, KY (US);
Shawn Rachelle Markham, Harrodsburg, KY (US);
Corning Incorporated, Corning, NY (US);
Abstract
Managing pressure within a thickness-control-zone (muffle door) housing relative to pressures in a glass-making machine enclosure and an upper chamber that is disposed outside the enclosure so as to minimize or control undesired airflows that would adversely affect thickness of glass ribbon. According to one pressure management technique, the pressure at a location in the housing is managed so as to be less than the pressure at a location that is within the enclosure as well as both outside and adjacent to the housing. In the event of a leak, as by a crack or unintended opening in the housing, for example, this pressure difference reduces or prevents airflow toward the ribbon and, thereby, undesired thickness variation in the ribbon. According to a second pressure-management technique, the pressure at the location is managed so as to be greater than the pressure in the upper chamber.