发明名称 |
Roller feed device for sewing machines |
摘要 |
An improved feed device for sewing machines of the double feed roller type in which one of the rollers is intermittently rotated by a unidirectional clutch. A clamping unit functions in cooperation with the clutch to prevent a reverse movement of the feed roller, and a braking device operatively associated with the clutch and clamping unit is effective in a simultaneous positive locking of both of the latter each time the feed roller completes its limit of travel.
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申请公布号 |
US4217842(A) |
申请公布日期 |
1980.08.19 |
申请号 |
US19790001116 |
申请日期 |
1979.01.05 |
申请人 |
ROCKWELL-RIMOLDI SPA |
发明人 |
DI LUIGI, OTTORINO ANGHINONI |
分类号 |
D05B27/14;F16D15/00;F16D41/08;(IPC1-7):D05B27/14 |
主分类号 |
D05B27/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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