Horizontal rotary hook for sewing machine
US7389734B2 · kind B2 · utility
0Cited by
12References
9Claims
0Family size
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Key dates
| Filing date | Nov 21, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Feb 20, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B57/143
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A horizontal rotary hook for a sewing machine includes a bobbin case holder accommodating a bobbin, a rotating hook made of a synthetic resin, and accommodating the bobbin case holder and rotated in a predetermined direction, the rotating hook including a peripheral wall and a peripheral end, a needle-thread passing opening formed in the peripheral wall of the rotating hook so as to be defined at least by a peripheral end of the peripheral wall, and a reinforcing rib provided on the peripheral wall of the rotating hook so as to be located in the vicinity of the peripheral end defining the needle-thread passing opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.