Horizontal rotary hook for sewing machine
US7197994B2 · kind B2 · utility
1Cited by
6References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 21, 2005 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Nov 21, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B57/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is a horizontal rotary hook for a sewing machine includes an inner bobbin case holder, an outer rotating hook made of a synthetic resin, a sliding surface formed on the rotating hock so as to be slid relative to the bobbin case holder with rotation of the rotating hook while an outer periphery of the bobbin case holder is placed on the rotating hook, an opening defined in an outer peripheral wall of the rotating hook so that a needle thread passes through the opening, and a beak mounted on an outer peripheral wall of the rotating hook for seizing a loop of the needle thread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.