Electronic watch or clock and accessory devices therefor

Details Electronic watch or clock and accessory devices therefor Electronic watch or clock and accessory devices therefor

1976-12-21

1978-10-10

Weldon, Ulysses

58 855, 58 50R, G04C 300

Patent

active

041189221

ABSTRACT:
An electronic watch or clock having incorporated therein an electrical power source battery, an oscillator producing a train of timing pulses at a predetermined frequency and either of a counter for counting the timing pulses supplied from said oscillator and driving means responsive to the timing pulses for driving the hands, whereby the clocking is effected based on the oscillation frequency of the aforesaid oscillator. This electronic watch or clock is provided with electrical connection terminals arranged to be connectable with either of an accessory device for charging the aforesaid battery and an accessory device for compensating clocking shift error so that upon selective connection to these accessory devices, the charging of the battery and/or the compensation of the clocking shift error can be made through the above mentioned connection terminals.

REFERENCES:
patent: 2974474 (1961-03-01), Wegner
patent: 3214670 (1965-10-01), Schaf
patent: 3509714 (1970-05-01), Walton
patent: 3540209 (1970-11-01), Zatsky et al.
patent: 3777471 (1973-12-01), Koehler et al.
patent: 3895486 (1975-07-01), Hammer et al.
patent: 3968417 (1976-07-01), Dials

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