Upper shaft phase detecting system for sewing machines

Details Upper shaft phase detecting system for sewing machines Upper shaft phase detecting system for sewing machines

1980-08-28

1982-07-20

Nerbun, Peter P.

Sewing

Work manipulating

Guides

D05B 302

Patent

active

043400027

ABSTRACT:
An upper shaft phase detecting system in which the rotation speed of the upper shaft is sensed and utilized to vary the time at which data starts to be released from an electronic memory of a sewing machine.

REFERENCES:
patent: 4131075 (1978-12-01), Wurst
patent: 4159002 (1979-06-01), Minalga
patent: 4231307 (1980-11-01), Takenoya

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