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:
Jan. 20, 1981
Filed:
Feb. 06, 1979
Katsumi Hasegawa, Kusatsu, JP;
Michio Ohno, Ibaraki, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
Yarn winding apparatus comprises means for supplying yarn at a constant speed, a winder having a yarn traverser and a fixed guide acting as a pivot for the traverse motion of the yarn. The apparatus includes a force transducer for generating an electrical signal indicating yarn tension, a rotary pulsing guide for periodically deflecting the yarn to bring it into contact with the force transducer, a setting device for generating an electrical signal indicating a predetermined desired value of yarn tension, a comparator for producing an error signal indicating the difference between the force transducer electrical signal and the setting device electrical signal, and a regulator for regulating the speed of rotation of the winding spindle in response to the difference between the foregoing signals.