GB1350134A - Electronic timepiece - Google Patents
Electronic timepieceInfo
- Publication number
- GB1350134A GB1350134A GB3612671A GB3612671A GB1350134A GB 1350134 A GB1350134 A GB 1350134A GB 3612671 A GB3612671 A GB 3612671A GB 3612671 A GB3612671 A GB 3612671A GB 1350134 A GB1350134 A GB 1350134A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vibrator
- fork
- aug
- compensate
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000032683 aging Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/12—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by piezoelectric means; driven by magneto-strictive means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
1350134 Electronic watches CITIZEN WATCH CO Ltd 2 Aug 1971 [1 Aug 1970] 36126/71 Heading G3T A battery powered electronic timepiece Fig. 1 (not shown) utilizes as its reference frequency the natural frequency of a first flexion oscillator or vibrator 1 Fig. 2 having Piezo-electric drive and sensing elements 3 and 2, 2' respectively connected in an oscillation maintaining circuit (e.g. as Fig.4 including a phase shifter R21, R25, C24 and amplifier 31) which also produces an output at the reference frequency. This output is fed via a signal converter 11 (e.g. frequency divider, wave shaper not shown) to drive Piezoelectric elements stuck on a second mechanical vibrator such as tuning fork 4. Vibrations of the fork are converted to rotary motion by a pawl 6 and ratchet wheel (not shown) which is coupled by a gear train to time indicating means (not shown). In Fig. 4 the value of R25 or alternatively C24, may be adjusted to compensate for ageing of the tuning fork 4. Both of the vibrators may be as vibrator 1 Fig.2 and mounted parallel to one another on a common support Figs.9 and 10 (not shown). Alternatively the time base vibrator may be as 51, in Fig.12 wherein the fork arms 51a, 51b carry respective balancers 51c and 51d which oscillate in phase opposition and compensate for transient disturbances. The driving vibrator is in the form of a cantilever and comprises an oscillatory mass 52a fixed intermediately to a U-shaped spring 52b the ends of which are attached at 103, 104 to a support 105. Resilient shock-proof mounting of the time base vibrator is described with reference to Fig.13 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6740770A JPS4948986B1 (en) | 1970-08-01 | 1970-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1350134A true GB1350134A (en) | 1974-04-18 |
Family
ID=13344031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3612671A Expired GB1350134A (en) | 1970-08-01 | 1971-08-02 | Electronic timepiece |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS4948986B1 (en) |
DE (1) | DE2138639A1 (en) |
GB (1) | GB1350134A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0671641U (en) * | 1993-03-12 | 1994-10-07 | 株式会社創建 | Ceiling lighting fixture mounting panel |
-
1970
- 1970-08-01 JP JP6740770A patent/JPS4948986B1/ja active Pending
-
1971
- 1971-08-02 GB GB3612671A patent/GB1350134A/en not_active Expired
- 1971-08-02 DE DE19712138639 patent/DE2138639A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4948986B1 (en) | 1974-12-24 |
DE2138639A1 (en) | 1972-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |