发明名称 Using a variable speed motor in a tape feed device for a sewing machine
摘要 A tape feed device for a sewing machine for feeding to a sewing location of the sewing machine at least one tape from a supply having a drive roll for feeding the tape, a feed roll disposed in the path of the tape between the supply and the drive roll, a stepping motor for driving both the drive roll and the feed roll, and a guide for passing tape around at least part of the feed roll which is capable of feeding more tape than the drive roll.
申请公布号 US4922843(A) 申请公布日期 1990.05.08
申请号 US19880190206 申请日期 1988.05.04
申请人 UNION SPECIAL G.M.B.H. 发明人 HYCA, BOHUMIL
分类号 D05B33/00;B65H23/188;D05B35/06 主分类号 D05B33/00
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