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:
Nov. 07, 2023
Filed:
Jun. 16, 2021
Janome Sewing Machine Co., Ltd., Tokyo, JP;
Hiroki Shiratsuchi, Tokyo, JP;
JANOME SEWING MACHINE CO., LTD., Tokyo, JP;
Abstract
A bobbin winding device has a switching motor and a switching lever connected to the switching motor. The switching motor is driven by the control unit, and the switching lever is rotated, so that the intermediate position of the detection lever is changed to one side in the rotation direction of the detection lever. This allows changing the winding diameter of the bobbin thread wound on different bobbin diameters. Here, the bobbin winding device has a color sensor which detects the outer diameter of the bobbin mounted on the spool shaft. The control unit drives the switching motor to rotate the switching lever based on the detected outer diameter of the bobbin. Therefore, the user can wind the bobbin thread around the bobbins having different outer diameters without rotating the switching lever from the initial position based on the outer diameter of the bobbins to be mounted.