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. 11, 2003
Filed:
Nov. 06, 2001
Peter Hintzen, Krickenbach, DE;
Rolf Kessler, Karlsruhe, DE;
VSM Group Aktiebolag, Huskvarna, SE;
Abstract
A thread cutter for use in a sewing machine with a rotating hook ( ) has a surface cam ( ) which, together with a cam follower ( ), controls the movement path of a pivotable thread catcher lever ( ), which grasps the thread with a thread catcher ( ) and severs it at a cutter ( ). With known solutions the surface cam is seated on the main shaft of the machine, which results in space-consuming structures with a large amount of parts. It is therefore proposed to connect the surface cam ( ) in a torsion-proof manner with the hook ( ) and to provide arresting means ( ) which, only during a revolution of the hook ( ) with the needle raised, maintain the thread catcher lever ( ) radially outside the engagement range of the surface cam ( ) and only with definite triggering release the thread catcher lever ( ) with a cam follower ( ) for contact with the surface cam ( ). The thread cutter therefore has only very few parts and can be housed without problems in the free arm of a sewing machine in a space-saving manner. Preassembly and pre-setting of the thread cutter, which constitutes one unit with the hook, is also possible.