Electronic timepiece

Details Electronic timepiece Electronic timepiece

1979-10-12

1981-05-26

Witkowski, S. J.

Horology: time measuring systems or devices

Display trains

368217, 368 85, 368 76, 368155, G04B 1902, G04C 300, G04C 500, G04C 1900

Patent

active

042701988

ABSTRACT:
An electronic timepiece having a frequency standard, a frequency converter, a control circuit responsive to a low frequency time unit signal to provide first and second output signals, and a driver circuit responsive to the first and second output signals to provide first and second drive signals, which timepiece comprises a reversible electro-mechanical transducer rotatable in a clockwise direction in response to the first drive signal and in a counter-clockwise direction in response to the second drive signal, first and second wheel trains driven by the electro-mechanical transducer independently from each other, and first and second time indicating means actuated by the first and second wheel trains, respectively.

REFERENCES:
patent: 3662535 (1972-08-01), Aedrick et al.
patent: 4070822 (1978-01-01), Arai
patent: 4175372 (1979-11-01), Tamura et al.

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