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. 21, 2012
Filed:
May. 18, 2010
Hirokazu Nishitani, Wakayama, JP;
Yoshiyuki Komura, Wakayama, JP;
Hirokazu Nishitani, Wakayama, JP;
Yoshiyuki Komura, Wakayama, JP;
Shima Seiki Mfg., Ltd., Wakayama-shi, Wakayama, JP;
Abstract
A yarn feeding device for a knitting machine comprises a motor for driving a roller from which a yarn is fed out, and a rotatable arm which intermediately stores the yarn fed out from the roller, and the yarn is fed from the arm to a knitting machine body. A torque generator is provided to apply a variable torque to the arm. A yarn speed is obtained from a loop length of a stitch for each knitting needle and a knitting speed calculated on the basis of knitting data used in the knitting machine body. The yarn speed is converted into a torque to be applied to a buffer using a conversion table at each knitting section in a knitting course so as to correct a yarn tension fluctuation caused by the yarn speed, and the torque generator is controlled in accordance with the torque thus obtained. The yarn tension fluctuation is reduced so that high-speed knitting and knitting using a weak yarn can be facilitated.