Driving device for timepieces

Details Driving device for timepieces Driving device for timepieces

1993-04-27

1995-03-21

Roskoski, Bernard

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

368160, 318 40, 318 49, H02K 3700

Patent

active

054003032

ABSTRACT:
The driving device comprises two single-phase stepping motors (1, 2), each having a different preferential direction of rotation. The bidirectional drive is achieved by selectively feeding one or the other of the two motors.

REFERENCES:
patent: 4112671 (1978-09-01), Kato et al.
patent: 4563604 (1986-01-01), Xuan

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