Solar powered indicating device for sewing machines

Details Solar powered indicating device for sewing machines Solar powered indicating device for sewing machines

1987-10-13

1988-08-16

Nerbun, Peter

Sewing

Elements

Thread sensing

323906, D05B 7900, D05B 4500

Patent

active

047635894

ABSTRACT:
A solar cell powered detecting and indicating system applicable to mechanically controlled sewing machines without D.C. power supplies connected to regular A.C. house mains, and detecting and indicating circuits minimizing power consumption for compatability with solar generated power supply.

REFERENCES:
patent: 4237807 (1980-12-01), Meier et al.
patent: 4333411 (1982-06-01), Lerner
patent: 4692683 (1987-09-01), Lalmond

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