Fully rotating hook for a lockstitch sewing machine

Details Fully rotating hook for a lockstitch sewing machine Fully rotating hook for a lockstitch sewing machine

1993-07-01

1994-10-04

Crowder, Clifford D.

Sewing

Elements

Revolving hooks

D05B 5716

Patent

active

053516362

ABSTRACT:
The friction coefficient between a track projection of an inner bobbin case holder and a track groove of an outer loop taker is reduced so that the outer loop taker can be rotated a small torque. One portion of the inner bobbin case holder opposite to a needle location is made of a synthetic resin or a synthetic resin containing metal powder carbon fiber, glass grains, ceramic powder or the like.

REFERENCES:
patent: 4638750 (1987-01-01), Mikuni
patent: 4700643 (1987-10-01), Hirose et al.
patent: 4858543 (1989-08-01), Badillo
patent: 4966088 (1990-10-01), Badillo
patent: 5188046 (1993-02-01), Badillo

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