Sewing machine motor unit

192 clutches and power-stop control – Clutch and brake – Sliding operation

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Details

188161, B60K 4124

Patent

active

045053669

ABSTRACT:
A motor positioner unit for sewing machines including an electromagnetically operated brake-clutch unit comprises a fixed structure of non-ferromagnetic material and clutch and brake windings (28, 35) mounted within an annular cavity (30, 36) of a ferromagnetic insert (31, 37) carried by the fixed structure.

REFERENCES:
patent: 2693261 (1954-11-01), Winther
patent: 2912963 (1959-11-01), Dufresne
patent: 3777864 (1973-12-01), Marti
patent: 3945476 (1976-03-01), de Jong
patent: 4222471 (1980-09-01), Hsu
patent: 4429773 (1984-02-01), Dohi et al.

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