Patent US677547A successfully refreshed from Google Patents.
Patent US3733803A successfully refreshed from Google Patents.
US3733803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for correcting time displayed on electronic timepiece
Assignee: Citizen Watch Co Ltd
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Filing: 1972-06-21
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Granted: 1973-05-22
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Expires: 1992-06-21
Abstract
Abstract A device for correcting the time displayed on an electronic timepiece having a standard oscillator, a frequency divider bank, a time display unit, a reversible driver and an external actuating member for correcting the time display from the exterior of the timepiece. In the device, means, including an onoff switch, for applying a correcting signal at a variable frequency is connected to the driver through a normal-reverse switch, and these means are arranged for interlocking operation with the external actuating member so that the time display can be corrected at a rapid and controlled rate in response to the manipulation of the external actuating member.
Inventors
- 👤 M Hiraga
- 👤 M Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:38
CPC Classifications
G; G04; G04C; G04C9/00; G04C3/00; G04C3/001; G04C3/005; G04G; G04G5/00; G04G5/02; G04G5/022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A device for correcting the time displayed on an electronic timepiece comprising a time display unit, an oscillator producing a signal at a standard oscillation frequency, a frequency divider bank connected to said oscillator for dividing the frequency of the standard signal to provide a frequency suitable for driving the timepiece, a reversible driver for controlling said time display unit in response to the application of the timekeeping signal from said frequency divider bank through an on-off switch, and an external actuating member for correcting the time displayed on said time display unit from the exterior of the timepiece, wherein means is provided for applying a time display correcting signal at a variable frequency and is connected to said reversible driver through normal-reverse switching means, and said external actuating member is arranged for interlocking operation with all of said time display correcting signal applying means and said normal-reverse switching means for suitably selecting the frequency of the time display correcting signal appearing from said time display correcting signal applying means, and, at the same time, switching over said normal-reverse switching means, thereby controlling the rate of correction of the time display in both the normal and reverse directions.
Claim 2
Independent Claim
198 words
A device for correcting the time displayed on an electronic timepiece comprising a time display unit, an oscillator producing a signal at a standard oscillation frequency, a frequency divider bank connected to said oscillator for dividing the frequency of the standard signal to provide a frequency suitable for driving the timepiece, a reversible driver for controlling said time display unit in response to the application of the timekeeping signal from said frequency divider bank through an on-off switch, and an external actuating member for correcting the time displayed on said time display unit from the exterior of the timepiece, wherein means is provided for applying a time display correcting signal at a variable frequency and is connected to said reversible driver through normal-reverse switching means, and said external actuating member is arranged for interlocking operation with all of said time display correcting signal applying means and said normal-reverse switching means for suitably selecting the frequency of the time display correcting signal appearing from said time display correcting signal applying means, and, at the same time, switching over said normal-reverse switching means, thereby controlling the rate of correction of the time display in both the normal and reverse directions.
Claim 3
Dependent Claim
37 words
A device as claimed in claim 1, in which said time display correcting signal applying means comprises a selective switch having a plurality of terminals connected to a plurality of output terminals of said frequency divider bank.
Claim 4
Dependent Claim
30 words
A device as claimed in claim 1, in which said time display correcting signal applying means comprises an oscillator including a variable constant means controlled by said external actuating member.
Claim 5
Dependent Claim
67 words
A device as claimed in claim 1, in which said external actuating member is selectively placed in one of a timekeeping position and a correcting position depending on the advancing or retracting movement thereof, and said on-off switching means making interlocking operation with said external actuating member is in the off and on positions respectively when said external actuating member is in the timekeeping and correcting positions.
Claim 6
Dependent Claim
91 words
A device as claimed in claim 1, in which, when said external actuating member in the correcting position is rotated in either direction from the correcting position in which the frequency of the output of said time display correcting signal applying means is lowest, said normal-reverse switching means is switched over depending on the direction of rotation of said external actuating member, and the frequency of the output of said time display cor-recting signal applying means is successively increased with the increase in the rotating angle of said external actuating member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |