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:
Feb. 12, 2019
Filed:
Mar. 26, 2013
Applicant:
Invista North America S.à R.l., Wilmington, DE (US);
Inventor:
Joseph E. Koskol, Wilmington, DE (US);
Assignee:
INVISTA North America S.à r.l., Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65H 54/40 (2006.01); B65H 54/38 (2006.01);
U.S. Cl.
CPC ...
B65H 54/40 (2013.01); B65H 54/385 (2013.01); B65H 2701/319 (2013.01);
Abstract
A method is provided for winding an elastic yarn into a cylindrical substantially straight-ended yarn package. The method includes feeding an elastic or elastomeric yarn at a substantially constant speed to a tube core to form the yarn package. The yarn package is rotated such that the yarn package with a substantially constant surface speed. The yarn is wound to form layers of helical coils, while providing a helix angle variation of greater than zero up to +/−80%.