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:
Dec. 16, 1986
Filed:
Jul. 06, 1984
Werner Strudel, Friedrichshafen, DE;
Lindauer Dornier Gesellschaft mbH, Lindau, DE;
Abstract
A tubular textile fabric is advanced through a treatment range having one or several cylindrical expanders. An inlet roller guides the tubular fabric to the expander in a flat shape, whereupon the expander expands the tubular fabric into a substantially cylindrical shape which is again flattened as it moves toward and over an outlet or discharge roller. In the inlet zone between the inlet roller and the expander and in the outlet zone between the expander and the outlet roller, where the fabric changes from the flat form into the expanded form of said cylindrical shape and vice versa, the fabric is exposed to different stretching forces or differing drafts due to differences in the distances that different portions of the fabric must travel while passing through these zones. These different stretching forces or drafts in the inlet zone are effective in the feed advance direction and are compensated by corresponding stretching forces or drafts in the outlet zone. The compensating stretching forces or drafts are caused by twisting the fabric. The twisting in turn is accomplished in that the plane defined by the inlet roller and the plane defined by the outlet roller enclose an angle, preferably an angle of about 90.degree., whereby the fabric passes through about a quarter turn from the inlet roller to the outlet roller.