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:
May. 20, 2003
Filed:
Aug. 01, 2001
Janome Sewing Machine Co., Ltd., Tokyo, JP;
Abstract
A sewing machine having a threading device is disclosed. The sewing machine comprises a needle bar having a needle attached to a lower end thereof. The needle has a needle eye and a threading shaft has a threading member mounted to the lower end thereof. The threading member has a threading hook, a drive motor for vertically moving the threading shaft along the needle bar, guide means for guiding and rotating the threading shaft at a threading position as the threading shaft is vertically moved, and a regulating member for deciding the threading position of the threading shaft. The threading shaft is moved down and stopped at the threading position and is axially rotated to pass the threading hook through the needle eye. The threading shaft is maintained in this state until a return signal is given such that the drive motor is driven again to pull the threading hook out of the needle eye and move up the threading shaft.