GB1378031A - Electronic maintenance circuit for an oscillating type motor element - Google Patents
Electronic maintenance circuit for an oscillating type motor elementInfo
- Publication number
- GB1378031A GB1378031A GB2946872A GB2946872A GB1378031A GB 1378031 A GB1378031 A GB 1378031A GB 2946872 A GB2946872 A GB 2946872A GB 2946872 A GB2946872 A GB 2946872A GB 1378031 A GB1378031 A GB 1378031A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- coil
- induced
- positive
- drive
- 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
- G04C13/00—Driving mechanisms for clocks by master-clocks
- G04C13/02—Circuit arrangements; Electric clock installations
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C11/00—Synchronisation of independently-driven clocks
- G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
- G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
- G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
- Brushless Motors (AREA)
- Control Of Electric Motors In General (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH949271A CH560925A (US07608600-20091027-C00054.png) | 1971-06-29 | 1971-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1378031A true GB1378031A (en) | 1974-12-18 |
Family
ID=4352566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2946872A Expired GB1378031A (en) | 1971-06-29 | 1972-06-23 | Electronic maintenance circuit for an oscillating type motor element |
Country Status (7)
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH1372372A4 (US07608600-20091027-C00054.png) * | 1972-09-20 | 1976-09-15 | ||
DE2309291A1 (de) * | 1973-02-24 | 1974-08-29 | Itt Ind Gmbh Deutsche | Verfahren zum synchronisieren mechanischer schwinger von gebrauchsuhren |
US3911337A (en) * | 1974-01-29 | 1975-10-07 | Diehl | Driving and stabilizing circuit for an electro-mechanical oscillator |
US4123691A (en) * | 1975-07-05 | 1978-10-31 | Lucas Industries Limited | Electromagnetic devices |
DE2749006C3 (de) * | 1977-11-02 | 1981-12-17 | Urgos Uhrenfabrik Schwenningen Haller, Jauch und Pabst GmbH& Co, 7220 Schwenningen | Elektronische Korrektureinrichtung für eine Pendeluhr |
US4340948A (en) * | 1980-04-24 | 1982-07-20 | General Time Corporation | Single-coil balance wheel for driving a mechanical movement |
US4544867A (en) * | 1983-04-04 | 1985-10-01 | Jones Jr John O | Vibrator for furniture |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3238431A (en) * | 1965-01-25 | 1966-03-01 | Omega Brandt & Freres Sa Louis | Oscillating resonator for a timepiece with synchronized driving oscillator |
US3451210A (en) * | 1966-07-01 | 1969-06-24 | Benrus Corp | System for maintaining oscillations in an electric timing mechanism having an oscillatory element |
JPS4943989B1 (US07608600-20091027-C00054.png) * | 1968-07-19 | 1974-11-26 | ||
US3629727A (en) * | 1969-05-20 | 1971-12-21 | Longines Montres Comp D | Circuit for sustaining oscillation of a resonator by a frequency above the natural frequency of said resonator |
US3618311A (en) * | 1970-01-13 | 1971-11-09 | Timex Corp | Synchronized horological system |
-
1971
- 1971-06-29 CH CH949271D patent/CH949271A4/xx unknown
- 1971-06-29 CH CH949271A patent/CH560925A/xx unknown
-
1972
- 1972-05-25 FR FR7219614A patent/FR2143688B1/fr not_active Expired
- 1972-06-21 IT IT25937/72A patent/IT956713B/it active
- 1972-06-23 GB GB2946872A patent/GB1378031A/en not_active Expired
- 1972-06-28 US US00268188A patent/US3806781A/en not_active Expired - Lifetime
- 1972-06-29 JP JP6455472A patent/JPS5419562B1/ja active Pending
- 1972-06-29 SU SU1802483A patent/SU434666A3/ru active
Also Published As
Publication number | Publication date |
---|---|
US3806781A (en) | 1974-04-23 |
DE2221747B2 (de) | 1976-07-15 |
JPS5419562B1 (US07608600-20091027-C00054.png) | 1979-07-16 |
DE2221747A1 (de) | 1973-01-11 |
SU434666A3 (ru) | 1974-06-30 |
IT956713B (it) | 1973-10-10 |
CH949271A4 (US07608600-20091027-C00054.png) | 1974-10-15 |
FR2143688B1 (US07608600-20091027-C00054.png) | 1976-10-29 |
FR2143688A1 (US07608600-20091027-C00054.png) | 1973-02-09 |
CH560925A (US07608600-20091027-C00054.png) | 1975-04-15 |
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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 |