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US3754391A
Expired / Lapsed
US
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Driving arrangement for quartz vibrator timepieces
Assignee: Suwa Seikosha KK
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Filing: 1971-12-23
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Granted: 1973-08-28
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Expires: 1991-12-23
Abstract
Abstract A timepiece having a high frequency time keeping oscillator including a quartz vibrator coupled through ripple binary dividers and waveform shaping circuits to a motor driving circuit. A pulse motor is operatively coupled to said motor driver circuit which also includes a sub-circuit having a monostable multivibrator. The ripple binary dividers and waveform shaping circuits are preset by a make-switch so as to produce motor driver signals for application to said motor driver circuit immediately after the make-switch is opened, while pulses are applied by said sub-circuit to said pulse motor during such resetting.
Inventors
- 👤 K Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:13
CPC Classifications
G; G04; G04G; G04G5/00; G04G5/02; G04C; G04C3/00; G04C3/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A timepiece comprising time keeping oscillator means including a quartz vibrator for producing a high frequency signal; divider means for dividing said high frequency signal to a low frequency timing signal; waveform shaping circuit means for forming a low frequency pulse signal from said timing signal; pulse motor means; motor driver circuit means responsive to said low frequency pulse signal for driving said pulse motor; makeswitch means coupled to said divider and waveform shaping circuit means for presetting thereof in response to the operation of said make-switch, said divider and waveform shaping circuit means being adapted to produce said low frequency pulse signal immediately after said make-switch is opened, said motor driver circuit means including main circuit means operatively coupled to said waveform shaping circuit means for driving said pulse motor in response to said low frequency pulse signal and sub-circuit means coupled to said make-switch and said pulse motor means, said sub-circuit means including monostable multivibrator means triggered by the closing of said make-switch to apply a driving pulse to said pulse motor.
Claim 2
Dependent Claim
174 words
A timepiece comprising time keeping oscillator means including a quartz vibrator for producing a high frequency signal; divider means for dividing said high frequency signal to a low frequency timing signal; waveform shaping circuit means for forming a low frequency pulse signal from said timing signal; pulse motor means; motor driver circuit means responsive to said low frequency pulse signal for driving said pulse motor; makeswitch means coupled to said divider and waveform shaping circuit means for presetting thereof in response to the operation of said make-switch, said divider and waveform shaping circuit means being adapted to produce said low frequency pulse signal immediately after said make-switch is opened, said motor driver circuit means including main circuit means operatively coupled to said waveform shaping circuit means for driving said pulse motor in response to said low frequency pulse signal and sub-circuit means coupled to said make-switch and said pulse motor means, said sub-circuit means including monostable multivibrator means triggered by the closing of said make-switch to apply a driving pulse to said pulse motor.
Claim 3
Dependent Claim
24 words
A timepiece as recited in claim 1, wherein said divider means and said waveform shaping circuit means are formed from complementary field effect transistors.
Claim 4
Dependent Claim
13 words
A timepiece as recited in claim 1, wherein said timepiece is a wristwatch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |