Electronic watch

Details Electronic watch Electronic watch

1989-05-17

1993-03-23

Roskoski, Bernard

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

368160, G04C 3000, H02K 4919

Patent

active

051970457

ABSTRACT:
A timepiece includes an accumulator such as a hairspring for storing the energy provided by a step motor and a control mechanism such as a rotor immersed in a viscous fluid for controlling the energy released by the accumulator to provide a constant driving force for turning the display hands of the timepiece. The accumulator and control mechanism are constructed along a common axis and are displaced from a spindle about which the display hands rotate. The spindle is positioned substantially at the center of the watch.

REFERENCES:
patent: 3242663 (1966-03-01), Castile
patent: 3571711 (1971-03-01), Nemetz
patent: 3961213 (1976-06-01), Kioke et al.
patent: 3978654 (1976-09-01), Koike et al.

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