EP0874292A3 - Elektronisches Uhrwerk - Google Patents

Elektronisches Uhrwerk Download PDF

Info

Publication number
EP0874292A3
EP0874292A3 EP98303226A EP98303226A EP0874292A3 EP 0874292 A3 EP0874292 A3 EP 0874292A3 EP 98303226 A EP98303226 A EP 98303226A EP 98303226 A EP98303226 A EP 98303226A EP 0874292 A3 EP0874292 A3 EP 0874292A3
Authority
EP
European Patent Office
Prior art keywords
date driving
date
wheel
contact point
meshed
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.)
Granted
Application number
EP98303226A
Other languages
English (en)
French (fr)
Other versions
EP0874292B1 (de
EP0874292A2 (de
Inventor
Kenichi Nakajima
Takayuki Satodate
Akihiro Matouge
Akihiko Inada
Mitsuru Ishii
Yoshio Koyama
Shigeo Suzuki
Masayuki Kawata
Yuko Sasaki
Eriko Takakuwa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP10944597A external-priority patent/JP3165070B2/ja
Priority claimed from JP10086710A external-priority patent/JP3002969B2/ja
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of EP0874292A2 publication Critical patent/EP0874292A2/de
Publication of EP0874292A3 publication Critical patent/EP0874292A3/de
Application granted granted Critical
Publication of EP0874292B1 publication Critical patent/EP0874292B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G04C3/08—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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/005—Indicating the time optically by electric means by discs
    • G04C17/0058—Indicating the time optically by electric means by discs with date indication
    • G04C17/0066—Indicating the time optically by electric means by discs with date indication electromagnetically driven, e.g. intermittently

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
EP19980303226 1997-04-25 1998-04-27 Elektronisches Uhrwerk Expired - Lifetime EP0874292B1 (de)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP109445/97 1997-04-25
JP10944697 1997-04-25
JP109446/97 1997-04-25
JP10944597A JP3165070B2 (ja) 1997-04-25 1997-04-25 カレンダ付電子時計
JP10944597 1997-04-25
JP10944697 1997-04-25
JP1670198 1998-01-29
JP16701/98 1998-01-29
JP1670198 1998-01-29
JP86710/98 1998-03-31
JP10086710A JP3002969B2 (ja) 1997-04-25 1998-03-31 電子時計
JP8671098 1998-03-31

Publications (3)

Publication Number Publication Date
EP0874292A2 EP0874292A2 (de) 1998-10-28
EP0874292A3 true EP0874292A3 (de) 1999-03-03
EP0874292B1 EP0874292B1 (de) 2005-10-26

Family

ID=27456622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980303226 Expired - Lifetime EP0874292B1 (de) 1997-04-25 1998-04-27 Elektronisches Uhrwerk

Country Status (3)

Country Link
EP (1) EP0874292B1 (de)
CN (1) CN1132079C (de)
DE (1) DE69831998T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2935182B1 (ja) * 1998-02-13 1999-08-16 セイコーインスツルメンツ株式会社 電子時計
EP2180383B1 (de) * 2008-10-24 2012-01-25 ETA SA Manufacture Horlogère Suisse Hilfsvorrichtung zur Positionshaltung einer Datumsanzeigescheibe für Uhrwerk
JP5573870B2 (ja) * 2012-03-12 2014-08-20 カシオ計算機株式会社 表示装置および電子時計
JP7205073B2 (ja) * 2018-04-23 2023-01-17 セイコーエプソン株式会社 電子時計

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1557667A (de) * 1966-09-13 1969-02-21
US3855781A (en) * 1972-12-22 1974-12-24 Suwa Seikosha Kk Step motor mechanism for electronic timepiece
JPS5658680A (en) * 1979-10-18 1981-05-21 Seikosha Co Ltd Time detection device
US4271494A (en) * 1977-10-06 1981-06-02 Kabushiki Kaisha Daini Seikosha Correcting device for calendar in an analog type electronic watch
JPS6051478A (ja) * 1983-08-26 1985-03-22 Seiko Instr & Electronics Ltd 超音波モータ
US4522506A (en) * 1983-09-21 1985-06-11 Seikosha Co., Ltd. Time signal clock
DE3813935A1 (de) * 1988-04-23 1989-11-02 Proizv Ob Mi Casovoj Z Schalter fuer elektronische uhren
US5357489A (en) * 1992-09-09 1994-10-18 Asulab S.A. Timepiece provided with driving means formed by a piezo-electric motor
EP0759584A1 (de) * 1995-08-22 1997-02-26 Eta SA Fabriques d'Ebauches Synchronisationsvorrichtung mit Zeitzonendetektor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1557667A (de) * 1966-09-13 1969-02-21
US3855781A (en) * 1972-12-22 1974-12-24 Suwa Seikosha Kk Step motor mechanism for electronic timepiece
US4271494A (en) * 1977-10-06 1981-06-02 Kabushiki Kaisha Daini Seikosha Correcting device for calendar in an analog type electronic watch
JPS5658680A (en) * 1979-10-18 1981-05-21 Seikosha Co Ltd Time detection device
JPS6051478A (ja) * 1983-08-26 1985-03-22 Seiko Instr & Electronics Ltd 超音波モータ
US4522506A (en) * 1983-09-21 1985-06-11 Seikosha Co., Ltd. Time signal clock
DE3813935A1 (de) * 1988-04-23 1989-11-02 Proizv Ob Mi Casovoj Z Schalter fuer elektronische uhren
US5357489A (en) * 1992-09-09 1994-10-18 Asulab S.A. Timepiece provided with driving means formed by a piezo-electric motor
EP0759584A1 (de) * 1995-08-22 1997-02-26 Eta SA Fabriques d'Ebauches Synchronisationsvorrichtung mit Zeitzonendetektor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 118 (P - 073) 30 July 1981 (1981-07-30) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 181 (E - 331) 26 July 1985 (1985-07-26) *

Also Published As

Publication number Publication date
DE69831998T2 (de) 2006-04-20
DE69831998D1 (de) 2005-12-01
EP0874292B1 (de) 2005-10-26
HK1019775A1 (en) 2000-02-25
CN1132079C (zh) 2003-12-24
CN1204790A (zh) 1999-01-13
EP0874292A2 (de) 1998-10-28

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