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:
Nov. 17, 2009
Filed:
Sep. 26, 2007
Eiichi Hamajima, Kasugai, JP;
Eiichi Hamajima, Kasugai, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A sewing machine executing a free-motion capable of sewing while a workpiece cloth is manually moved by an operator includes a needlebar having a lower end to which a sewing needle is attached, a needlebar driving mechanism vertically driving the needlebar via a main shaft, a presser foot pressing the workpiece cloth manually moved by the operator, an imaging device imaging at least an area of the workpiece cloth near to the sewing needle, a movement amount operating device obtaining by operation a movement amount of the workpiece cloth based on image data from the imaging device, a setting device setting a stitch pitch on the workpiece cloth, a comparing device comparing the obtained movement amount of the workpiece cloth and the set stitch pitch, a cloth movement limiter limiting movement of the workpiece cloth by the manual operation, and a control device controlling the cloth movement limiter according to a result of comparison.