1977-04-25
1979-12-11
Witkowski, Stanley J.
58 23AC, 58 23D, 58 23V, 58125R, G04B 1302, G04B 1902, G04C 300
Patent
active
041776313
ABSTRACT:
A small-sized electronic wristwatch assembly, wherein a support plate is constructed and arranged to position the operative elements of the wristwatch to reduce the size thereof is provided. The electrical components of the wristwatch include a battery, a quartz crystal oscillator coupled to the battery for producing a high frequency time standard signal, a divider circuit coupled to the oscillator for dividing the high frequency time standard signal and producing a low frequency timekeeping signal, and an electro-mechanical transducer for receiving the low frequency timekeeping signal and in response thereto being continuously incrementally rotated. The mechanical components of the wristwatch include a center wheel and a gear train disposed intermediate the electro-mechanical transducer and the center wheel for transmitting to the center wheel a predetermined amount of rotation in response to each incremental rotation of the electro-mechanical transducer. Each of the operative components are disposed on a support plate, particularly configured to miniaturize the timepiece without affecting the operation and reliability thereof.
REFERENCES:
patent: 3737746 (1973-06-01), Cielaszyk et al.
patent: 3901018 (1975-08-01), Erard
patent: 3902312 (1975-09-01), Yamazaki
patent: 3992874 (1976-11-01), Collins
patent: 4087957 (1978-05-01), Miyasaka et al.
Ushikoshi Kenichi
Yamada Haruyoshi
Kabushiki Kaisha Suwa Seikosha
Witkowski Stanley J.
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