Needle threading device for sewing machine and sewing machine
US7281479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B47/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needle threading device of a sewing machine comprising a needle threading shaft mounted rotatably and vertically movably; a needle threading hook fixed to a lower end of the needle threading shaft; and a rotating mechanism that rotates the needle threading shaft such that the needle threading hook passes through a needle eye of the sewing needle. In a such a needle threading device, a first thread guide member is fixed to a lower end of the needle threading shaft and arranged opposed to the needle threading book with respect to the needle threading shaft; a second thread guide member is pivotally mounted on the lower end of the needle threading shaft and linked to the first thread guide member via a link mechanism. The second thread guide member is mounted with a thread retaining unit that retains the upper thread upon needle hooking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.