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:
Jun. 01, 2004
Filed:
Mar. 21, 2003
Byoung Min Kong, Inchon, KR;
Sunstar Machinery Co., Ltd., Inchon, KR;
Abstract
Disclosed is an apparatus and method for controlling feed quantity and direction in a sewing machine, in which feed quantity and direction of a workpiece is controlled by a motor, thereby not only allowing various patterns to be produced by stitches made up of upper and lower threads, but also allowing a speedy sewing operation. The apparatus comprises an operator interface means for inputting the feed quantity and direction of a workpiece according to an operator's plan, a motor driving control means for outputting a motor driving control signal according to feed information on the feed quantity and direction of the workpiece inputted through the operator interface means, and a workpiece feed control means for controlling rotation direction and speed of the motor according to the motor driving control signal from the motor driving control means.