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:
Aug. 23, 1988
Filed:
Jul. 13, 1987
Teijin Seiki Company Limited, Osaka, JP;
Abstract
A drive method for the winding of a yarn wherein the yarn is wound on a bobbin holder and into a yarn package by contacting a contact roller with the package and controlling the number of rotations of the contact roller or tension of the yarn so as to be a predetermined value. When the contact roller is driven by an induction motor and also the contact roller is driven in pressing contact with the package by the induction motor, the number of rotations of the contact roller is given by the following equation: N=n1-(K.multidot.m (n0-n1)/T1), wherein the N indicates the number of rotations (r.p.m.) of the contact roller with which the contact roller is operated in pressing contact with the bobbin holder, the n0 indicates the number of rotations (r.p.m.) which is synchronized to the power frequency of the motor driving the contact roller, the n1 indicates the number of rotations (r.p.m.) of the motor with which only the contact roller is driven, the T1 indicates a load torque (kg cm) of the motor with which only the contact roller is driven, the m indicates the number of packages which are wound in contact with the contact roller, and the K is beween 0 and 1.5.