DE3880603D1 - TWO-MOTOR WHEEL PLANT, ESPECIALLY FOR A RADIO WATCH. - Google Patents
TWO-MOTOR WHEEL PLANT, ESPECIALLY FOR A RADIO WATCH.Info
- Publication number
- DE3880603D1 DE3880603D1 DE8888115449T DE3880603T DE3880603D1 DE 3880603 D1 DE3880603 D1 DE 3880603D1 DE 8888115449 T DE8888115449 T DE 8888115449T DE 3880603 T DE3880603 T DE 3880603T DE 3880603 D1 DE3880603 D1 DE 3880603D1
- Authority
- DE
- Germany
- Prior art keywords
- seconds
- motor wheel
- minutes
- hours
- driving
- 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 - Fee Related
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
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
-
- 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
- G04C3/001—Electromechanical switches for setting or display
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
The clock mechanism has an electronic motor (15) for driving the seconds and minutes wheels (18,20) and a second electric stepping motor (24) for driving the hours wheel (21), to allow separation correction of the indicated hours without altering the momentary position of the seconds and minutes hands. A reflection light barrier (28) cooperates with the hours wheel (21) to detect its actual position, with a second light barrier cooperating with both the seconds and minutes wheels (18,20). The operation of both motors (15,24) and both light barriers (28,33) are synchronised.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8888115449T DE3880603D1 (en) | 1987-09-23 | 1988-09-21 | TWO-MOTOR WHEEL PLANT, ESPECIALLY FOR A RADIO WATCH. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8712809U DE8712809U1 (en) | 1987-09-23 | 1987-09-23 | Two-motor gear train, especially for a radio-controlled clock |
DE8888115449T DE3880603D1 (en) | 1987-09-23 | 1988-09-21 | TWO-MOTOR WHEEL PLANT, ESPECIALLY FOR A RADIO WATCH. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3880603D1 true DE3880603D1 (en) | 1993-06-03 |
Family
ID=6812342
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8712809U Expired DE8712809U1 (en) | 1987-09-23 | 1987-09-23 | Two-motor gear train, especially for a radio-controlled clock |
DE8888115449T Expired - Fee Related DE3880603D1 (en) | 1987-09-23 | 1988-09-21 | TWO-MOTOR WHEEL PLANT, ESPECIALLY FOR A RADIO WATCH. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8712809U Expired DE8712809U1 (en) | 1987-09-23 | 1987-09-23 | Two-motor gear train, especially for a radio-controlled clock |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0308879B2 (en) |
DE (2) | DE8712809U1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD277540A1 (en) * | 1988-11-30 | 1990-04-04 | Ruhla Uhren Veb K | WHEELS FACTORY |
US5363348A (en) * | 1992-09-04 | 1994-11-08 | Damle Madhav N | High resolution, remotely resettable time clock |
JP3328518B2 (en) * | 1996-11-06 | 2002-09-24 | セイコークロック株式会社 | Clock mechanical body |
GB2352061B (en) * | 1996-11-06 | 2001-03-28 | Seiko Clock Inc | Timepiece movement |
EP1357448A1 (en) * | 2002-04-26 | 2003-10-29 | Kienzle Time (Hong Kong) Limited | Radio controllable clock |
US20040125702A1 (en) * | 2002-10-21 | 2004-07-01 | Hideki Kitajima | Rotational position detection device, hand position detection device and clock using the hand position detection device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH646301GA3 (en) * | 1981-12-23 | 1984-11-30 | ||
DE3510861C2 (en) * | 1984-11-09 | 1986-09-25 | Gebrüder Junghans GmbH, 7230 Schramberg | Display position detection device for a clock, in particular a radio clock |
DE3513961A1 (en) * | 1985-04-18 | 1986-10-23 | Forschungsgesellschaft für Feingeräte-, Mikro- und Uhrentechnik e.V., 7000 Stuttgart | Device for detecting the state of the motion in an electronic clock, in particular a radio-controlled clock |
-
1987
- 1987-09-23 DE DE8712809U patent/DE8712809U1/en not_active Expired
-
1988
- 1988-09-21 EP EP88115449A patent/EP0308879B2/en not_active Expired - Lifetime
- 1988-09-21 DE DE8888115449T patent/DE3880603D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0308879A2 (en) | 1989-03-29 |
DE8712809U1 (en) | 1987-11-05 |
EP0308879B2 (en) | 1996-05-08 |
EP0308879B1 (en) | 1993-04-28 |
EP0308879A3 (en) | 1991-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8366 | Restricted maintained after opposition proceedings | ||
8339 | Ceased/non-payment of the annual fee |