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:
Feb. 24, 2004
Filed:
Dec. 16, 2002
Shih-Fang Chen, Taipei, TW;
Ching Chi Machine Co., Ltd., Taipei Hsieng, TW;
Abstract
A knife track adjustment structure of a thread cutter of a sewing machine includes a front guide board bridged over the base board with an upper and a lower ends of the front guide board locked on the base board. The front guide board up and down adjustably displaceable on the base board. A guide is disposed under the middle section of the front guide board, a guide pin being sequentially passed through a hook rod arm and a knife arm. A swing arm, a first end of the swing arm being pivotally connected with the base board, a pin being connected with the bottom of a second end of the swing arm. The pin is sequentially passed through the hook rod arm and pivotally connected on the knife arm. A spring compressed between the swing arm and the base board helps in restoring the knife arm and hook rod arm.