| 发明名称 |
Omni-directional thread cutter |
| 摘要 |
An omni-directional thread cutter in a sewing machine including an annular groove formed in the cylindrical surface of the presser bar. The lower surface of the groove forms an acute angle with the cylindrical surface thereby forming a sharp cutting edge.
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| 申请公布号 |
US4325316(A) |
申请公布日期 |
1982.04.20 |
| 申请号 |
US19800205860 |
申请日期 |
1980.11.12 |
| 申请人 |
THE SINGER COMPANY |
发明人 |
BRAUCH, ROBERT B.;HEINE, MARTIN W. |
| 分类号 |
D05B65/00;(IPC1-7):D05B65/00 |
主分类号 |
D05B65/00 |
| 代理机构 |
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代理人 |
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