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:
Oct. 31, 2017
Filed:
May. 06, 2015
Zeng Hsing Industrial Co., Ltd., Taichung, TW;
Jung-Nan Tsai, Taichung, TW;
Zeng Hsing Industrial Co., Ltd., Taichung, TW;
Abstract
In a method for controlling sewing operation of a sewing machine, a stitch needle completes an in-and-out movement on a fabric with a first tension applied to an upper thread when the stitch needle, with respect to a fabric-feeding mechanism, is at a first relative position corresponding to a first pattern part of a predetermined stitch pattern. Afterward, the stitch needle is moved, with respect to the fabric-feeding mechanism, to a second relative position corresponding to a second pattern part of the predetermined stitch pattern, and completes an in-and-out movement on the fabric at the second relative position with a second tension, which is greater than the first tension, applied to the upper thread.