Electronic timepiece

Details Electronic timepiece Electronic timepiece

1979-06-19

1981-06-02

Weldon, Ulysses

Horology: time measuring systems or devices

With calendar indicator

368 37, 368 38, G04B 1924

Patent

active

042714931

ABSTRACT:
A drive mechanism for an additional mechanism of an electronic timepiece having a time-keeping system driven by a reversible stepping motor, in which an auxiliary driving source is arranged to accumulate energy utilizing a drive power transmitted from a time-keeping system for driving additional mechanism, and locking means maintains the energy stored in the auxiliary driving source.

REFERENCES:
patent: 3875739 (1975-04-01), Mougin
patent: 3945191 (1976-03-01), van Berkum
patent: 4129981 (1978-12-01), Nomura et al.

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