Biasing mechanism for sewing machine presser foot
US7360497B2 · kind B2 · utility
2Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2004 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Sep 10, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B29/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sewing machine comprises a presser foot; a drive shaft operably connected to the presser foot which imparts periodic upward movement to the presser foot; and a biasing mechanism operably connected to the presser foot which normally biases the presser foot into a downward position, the biasing mechanism comprising a toggle link having a pivot, a resilient element operably connected to the toggle link on one side of the pivot and the presser foot operably connected to the toggle link on the other side of the pivot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.