Horizontal rotary hook for sewing machine

Details Horizontal rotary hook for sewing machine Horizontal rotary hook for sewing machine

2007-02-06

2007-02-06

Izaguirre, Ismael (Department: 3765)

Sewing

Elements

Revolving hooks

Reexamination Certificate

active

11230522

ABSTRACT:
A horizontal rotary hook of a sewing machine includes an inner rotary hook made of synthetic resin and housing a bobbin, an outer rotary hook made of synthetic resin and housing the inner rotary hook and rotated in a predetermined direction, an adsorption plate made of a magnetic material and mounted on one of an outer surface of a bottom wall of the inner rotary hook and an inner surface of a bottom wall of the outer rotary hook, a magnet piece formed as a thin plate and mounted in the other of the outer surface of the bottom wall of the inner rotary hook and the inner surface of the bottom wall of the outer rotary hook, and a yoke member made of a magnetic material and housing the magnet piece integrally formed with a bottom wall contacting the magnet piece and a wall surrounding an outer circumferential side of the magnet piece. The yoke member is mounted on the other of the outer surface of the bottom wall of the inner rotary hook and the inner surface of the bottom wall of the outer rotary hook.

REFERENCES:
patent: 2394369 (1946-02-01), Colegrove
patent: 3347193 (1967-10-01), Perri
patent: 3581687 (1971-06-01), Meier et al.
patent: 3851448 (1974-12-01), Sano et al.
patent: 4429649 (1984-02-01), Eguchi et al.
patent: 4676178 (1987-06-01), Hirose
patent: A 7-112088 (1995-05-01), None
patent: A 8-24461 (1996-01-01), None

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