发明授权
- 专利标题： Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machine
- 专利标题（中）： 用于控制步进电机驱动的装置，调节缝纫机的横向针脚和/或进给长度
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申请号： US360653申请日： 1982-03-22
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公开(公告)号： US4492909A公开(公告)日： 1985-01-08
- 发明人: Jurgen Hartwig
- 申请人： Jurgen Hartwig
- 申请人地址： DEX
- 专利权人： Pfaff AG Haushaltsmaschinen
- 当前专利权人： Pfaff AG Haushaltsmaschinen
- 当前专利权人地址： DEX
- 主分类号： D05B19/12
- IPC分类号： D05B19/12 ; H02P8/14 ; H02P23/00 ; H02K29/02
摘要：
A device for controlling the drive of a stepping motor to adjust the lateral stitch bight and/or the feed length of a sewing machine comprising apparatus connected to the stepping motor for rendering the stepping frequency of the stepping motor variable as a function of the speed of the sewing machine. The apparatus comprises a microcomputer which is connected to a pulse transmitter for transmitting pulses proportional to the speed of the sewing machine.
公开/授权文献
- US5558697A Dual cyclonic vacuum cleaner 公开/授权日：1996-09-24
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