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发明授权
CN1676715B 间歇压脚上下驱动装置及其缝纫机 有权 诉讼 无效申请 无效口审

间歇压脚上下驱动装置及其缝纫机
摘要：
一种间歇压脚上下驱动装置，在将缝纫机针从缝制对象布拔出时，使防止所述布浮起的间歇压脚移动，其特征在于，具有执行为了调整所述间歇压脚的间歇运动位置的移动以及所述间歇压脚向退避位置移动的单一的驱动装置，并且，所述驱动装置，采用了可维持所述间歇压脚的位置设定状态且移动速度可变的结构。
摘要（英）：

A device vertically moves the intermittent presser foot for preventing the float of a cloth T when a sewing-machine needle is drawn up from the cloth to be sewn. The vertical movement of the intermittent presser foot including at least its position adjusting movement for intermittent motion and its retracting movement is carried out by a single driving means which is allowed to set and maintain aposition and change its speed.

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