Sewing machine and presser foot device
US12281422B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2022 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05C9/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A presser foot device includes a pressing member and a guide member provided at the lower end of the pressing member. The guide member has an opening section provided to allow an upper thread to pass therethrough in a rotating direction of a rotary hook, and a restricting section provided to restrict movement of the upper thread in a direction opposite the rotating direction of the rotary hook. Upon determination that a direction in which a next stitch is to be formed belongs to a predetermined hitch-stitch forming area, detouring movement of a frame, holding the sewing workpiece, is carried out. This detouring movement includes moving the frame in such a direction in which the upper thread moves out of the opening section and then further moving the frame to a target position corresponding to the next stitch such that the upper thread abuts against the restricting section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.