System for mounting the coil of the motor in an electric watch

Details System for mounting the coil of the motor in an electric watch System for mounting the coil of the motor in an electric watch

1980-03-10

1982-02-23

Weldon, Ulysses

Horology: time measuring systems or devices

Chronological

With significant casing or mounting support structure

368155, 368156, G04C 2302

Patent

active

043171877

ABSTRACT:
A system for fastening the coil of a step-by-step motor in an electric or an electronic watch.
It is characterized by the fact that one or both pole pieces 4 and 4' of the coil 2 have extrusions 10 and 11 of cylindrical shape which extend perpendicular to the plane of the pole piece 4 and are intended to be introduced into corresponding boreholes in the substrate of the printed circuit 1.
This arrangement is advantageous since the extrusions can be produced by stamping before the heat treatment of the pole pieces, which eliminates the stresses which might, upon the mounting of the coil, destroy the magnetic qualities of the materials.

REFERENCES:
patent: 3898789 (1975-08-01), Arzt
patent: 3943695 (1976-03-01), Bauer et al.
patent: 4186551 (1980-02-01), Nakayama

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