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:
Nov. 13, 2001
Filed:
Jun. 24, 1999
Georg Hartung, Pulheim, DE;
Lutz Kümmel, Jüchen-Gierath, DE;
Bruno Böhmer, Erkrath, DE;
Wolfgang Roloff, Mönchengladbach, DE;
SMS Schloemann-Siemag Aktiengesellschaft, Düsseldorf, DE;
Abstract
A method of straightening rolled sectional steel includes clamping and subsequently cooling at least a sectional steel whose maximum local cross-sectional temperature is below A,and whose minimum local cross-sectional temperature is above a lower limit temperature, wherein already the lower limit temperature produces as a result of clamping a thermal elongation in all fibers of the sectional steel which is greater than the elongation which would be required for a plastification of the fibers which would be subjected to the greatest internal compressive stresses if the sectional steel were exclusively air cooled without clamping.