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:
Dec. 06, 2011
Filed:
Jan. 09, 2009
Shui-chun Tseng, Taiping, TW;
Ming-horng Lin, Taiping, TW;
Shui-Chun Tseng, Taiping, TW;
Ming-Horng Lin, Taiping, TW;
Zeng Hsing Industrial Co., Ltd., Taiping, TW;
Abstract
A thread cutting device for a sewing machine with a hook rotatable in a vertical plane includes a drive motor, a fixed knife which has a working-side wall extending towards a thread fetching zone of the sewing machine to terminate at a first cutting edge, and a movable knife which is driven by the drive motor to angularly move between fetching and thread cutting positions in a vertical plane. The movable knife has a lateral edge surface defining a cavity in an intermediate segment thereof to engage lower and upper threads when the movable knife reaches the fetching position. The movable knife has a second cutting edge disposed to press the first cutting edge so as to complete a cutting action.