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. 02, 2006
Filed:
Dec. 02, 2003
Rolf Wahlström, Jönköping, SE;
Rolf Wahlström, Jönköping, SE;
VSM Group AB, Huskvarna, SE;
Abstract
A gripper hook for a sewing machine. The sewing machine includes a needle, a stitch plate and a housing for the gripper hook. The gripper hook includes an open cylinder and is rotatably mounted on a horizontal axis. A bobbin basket is supported inside the gripper hook receives a bobbin case. The bobbin case houses a bobbin. The needle, in executing a stitch, is brought down perpendicular to the axis of the gripper hook in front of the open part of the gripper hook through an opening in the wall of the bobbin basket such that a gripper hook tip catches the upper thread and leads the upper thread around the bobbin basket. The gripper hook has a side wall that is at least wide enough for the side wall to protect the bobbin basket from being struck by the needle when the needle tip is out of alignment.