Presser foot device of sewing machine having a presser foot asce

Details Presser foot device of sewing machine having a presser foot asce Presser foot device of sewing machine having a presser foot asce

1998-03-25

1999-05-04

Nerbun, Peter

Sewing

Special machines

Pattern controlled or programmed

112239, 112275, 112284, D05B 2902, D05B 6928

Patent

active

058991573

ABSTRACT:
In a presser foot device of a sewing machine, a presser foot is vertically movably supported to a sewing machine body frame by a presser bar. A drive device moves the presser bar up and down in accordance with a drive signal. A sensor detects when the presser foot is raised close to a top dead center position, that is, a predetermined position. Based on the detection by the sensor, a control device controls the drive signal for the presser foot drive device.

REFERENCES:
patent: 4538533 (1985-09-01), Ohchi et al.
patent: 4674424 (1987-06-01), Shiomi et al.
patent: 5461997 (1995-10-01), Landen

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