GB1331271A - Drive balance assemgly for an electronic timepiece - Google Patents
Drive balance assemgly for an electronic timepieceInfo
- Publication number
- GB1331271A GB1331271A GB4617170A GB4617170A GB1331271A GB 1331271 A GB1331271 A GB 1331271A GB 4617170 A GB4617170 A GB 4617170A GB 4617170 A GB4617170 A GB 4617170A GB 1331271 A GB1331271 A GB 1331271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- balance
- pin
- electronic timepiece
- arrangement
- wheel
- 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
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
- G04C3/04—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 balance
- G04C3/06—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 balance using electromagnetic coupling between electric power source and balance
- G04C3/065—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 balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1502—Escapement
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
1331271 Electric timepieces CITIZEN WATCH CO Ltd 29 Sept 1970 [29 Sept 1969] 46171/70 Heading G3T In an electronic timepiece of the kind having a balance 10 carrying a pin 22 which advanced a stepping wheel 23, when the balance is in its neutral position the pin 22 is offset by at least 20 degrees from a line 28 joining the axed O 1 , O 2 of the balance and stepping wheel. The arrangement is stated to introduce a stepping error which may be arranged to compensate for other errors in isochronism - see Figs. 5, 6 (not shown). The pin 22 may be offset to either side of the line 28 and the arrangement is also stated to facilitate self-starting. A magnet 27 fixed to a plate 20 co-operates with the teeth of the wheel 23 to prevent reverse rotation. The balance 10 carries counterweights 13a, b and permanent magnets 12a, b which co-operate with fixed driving and sensing coils 14. In an alternative arrangement, the balance carries four permanent magnets (12a'-d'), Fig.4 (not shown) and has a single counterweight (13).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44077676A JPS4840111B1 (en) | 1969-09-29 | 1969-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1331271A true GB1331271A (en) | 1973-09-26 |
Family
ID=13640471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4617170A Expired GB1331271A (en) | 1969-09-29 | 1970-09-29 | Drive balance assemgly for an electronic timepiece |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3681915A (en) |
| JP (1) | JPS4840111B1 (en) |
| DE (1) | DE2047392A1 (en) |
| GB (1) | GB1331271A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH1533473A4 (en) * | 1973-10-31 | 1976-11-30 | ||
| CH1465174A4 (en) * | 1974-11-02 | 1976-05-14 | ||
| US4122663A (en) * | 1976-03-18 | 1978-10-31 | Kock Bruce A | Stop watch and timing device |
| JPS6059230A (en) * | 1983-09-12 | 1985-04-05 | Takiron Co Ltd | Laying work of water collection pipe |
-
1969
- 1969-09-29 JP JP44077676A patent/JPS4840111B1/ja active Pending
-
1970
- 1970-09-26 DE DE19702047392 patent/DE2047392A1/en active Pending
- 1970-09-28 US US76122A patent/US3681915A/en not_active Expired - Lifetime
- 1970-09-29 GB GB4617170A patent/GB1331271A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2047392A1 (en) | 1971-04-01 |
| US3681915A (en) | 1972-08-08 |
| JPS4840111B1 (en) | 1973-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |