Needle plate construction for sewing machine and sewing machine
US12286737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2022 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B57/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needle plate has a needle hole and a guide hole communicating with the needle hole. The guide hole is located near a front side of a sewing machine and positionally deviated from an up-down movement trajectory of a sewing needle in a rotating direction of a rotary hook. The needle plate has a groove formed in front of the needle hole and extending from the guide hole in a direction opposite to the rotating direction of the rotary hook. While the groove is open upward and at its portion leading to the guide hole, the other portions of the groove are defined by a bottom surface and side walls. In a sewing operation, depending on a direction in which a member holding a sewing workpiece moves, the lower thread passes through the guide hole to be guided to the front of the needle hole via the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.