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:
May. 13, 2008
Filed:
Oct. 27, 2006
Clemens Kunisch, Armsheim, DE;
Armin Vogl, Jena, DE;
Andreas Morstein, Jena, DE;
Schott AG, Mainz, DE;
Abstract
A roller-equipped annealing lehr for flat glass, having a roller conveyor inside a lehr housing, with heating units arranged in pairs above and below the roller conveyor, in rows situated one after another and extending transversely to the feed direction. Temperature regulators are provided with predetermined desired values and actual temperature values that are measured in a position-dependent fashion. In order to achieve a desired stable temperature distribution and to prevent stresses in the flat glass, a feedback loop arrangement for at least one pair of heating units situated at a particular position in the row, presets as a control variable the heating output required to predetermine the temperature distribution in the region of this position as a predetermined portion of a heating output, which is calculated based on at least one actual temperature value measured at a different position in the row.