Motor and drive for a timepiece

Details Motor and drive for a timepiece Motor and drive for a timepiece

1975-12-11

1980-04-22

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, 310 83, 368126, H02K 3700

Patent

active

041996992

ABSTRACT:
An electronic timepiece including a battery, a drive motor, a drive, a display, and electronic circuits for driving said motor. The motor is a pulse motor and comprises a core, coil, yoke and rotor. The rotor includes a worm gear having worm teeth which engage with a gear wheel. The teeth on the worm gear are arranged and configured such that the initial and final portions of each tooth which engage with the gear wheel are parallel to the plane of rotation of the rotor thereby preventing torque applied to the gear wheel from being transmitted to the rotor.

REFERENCES:
patent: 781600 (1905-01-01), Hamachek
patent: 2912604 (1959-11-01), Eurich
patent: 3374689 (1968-03-01), Dotto
patent: 3432699 (1969-03-01), Albinger
patent: 3818690 (1974-06-01), Schwarschild
patent: 3878414 (1975-04-01), Harakawa
patent: 3883758 (1975-05-01), Lechner
patent: 3900749 (1975-08-01), Carriker
patent: 3949251 (1976-04-01), Takatsuki
patent: 3969642 (1976-07-01), Yoshino

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