Driving device especially for a timepiece

Details Driving device especially for a timepiece Driving device especially for a timepiece

1978-08-31

1983-01-04

Weldon, Ulysses

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368184, G04B 1900

Patent

active

043670490

ABSTRACT:
Driving device especially for a timepiece, constituted by a stepping motor the stator of which comprises a coil having a single winding and the rotor of which is constituted of a permanent magnet and of a control electronic circuit able to deliver pulses of current to the motor. The motor includes precise positioning magnets for its rotor which are active in the absence of the pulses. The electronic control circuit is arranged in such a way that the pulses are delivered in pairs, with opposed polarities in each pair, the order of succession of the polarities in a pair determining the sense of rotation of the rotor.

REFERENCES:
patent: 2867762 (1959-01-01), Lehman et al.
patent: 3671841 (1972-06-01), Hoffmann
patent: 3818690 (1974-06-01), Schwarzschild
patent: 4055785 (1977-10-01), Nakajima et al.
patent: 4066947 (1977-01-01), Nakajima et al.
patent: 4092820 (1978-06-01), Kume et al.
patent: 4112671 (1978-09-01), Kato et al.
patent: 4150536 (1979-04-01), Nakajima et al.

Affiliated with

Also associated with

Rating

Driving device especially for a timepiece does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving device especially for a timepiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving device especially for a timepiece will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1580724