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CH644238GA3 - - Google Patents

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Publication number
CH644238GA3
CH644238GA3 CH621080A CH621080A CH644238GA3 CH 644238G A3 CH644238G A3 CH 644238GA3 CH 621080 A CH621080 A CH 621080A CH 621080 A CH621080 A CH 621080A CH 644238G A3 CH644238G A3 CH 644238GA3
Authority
CH
Switzerland
Prior art keywords
crown
date
micro
drives
motor
Prior art date
Application number
CH621080A
Other languages
French (fr)
Other versions
CH644238B (en
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
Publication of CH644238B publication Critical patent/CH644238B/en
Application filed filed Critical
Priority to CH6210/80A priority Critical patent/CH644238B/en
Priority to IT23069/81A priority patent/IT1139106B/en
Priority to FR8114691A priority patent/FR2488703A1/en
Priority to US06/287,578 priority patent/US4376991A/en
Priority to DE19813130134 priority patent/DE3130134A1/en
Priority to DE8122416U priority patent/DE8122416U1/en
Priority to GB8124191A priority patent/GB2082353B/en
Priority to JP56124204A priority patent/JPS5754885A/en
Publication of CH644238GA3 publication Critical patent/CH644238GA3/fr

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
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors
    • 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)
  • Electric Clocks (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

This watch comprises a date crown or date disc (9) pivoted onto a plate (10) and completely independent of a driving gear train (1, 2, 3). A second micro-motor (14) drives this crown (9) in its angular displacements.
CH6210/80A 1980-08-18 1980-08-18 ELECTRONIC WATCH WITH ANALOGUE DISPLAY. CH644238B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH6210/80A CH644238B (en) 1980-08-18 1980-08-18 ELECTRONIC WATCH WITH ANALOGUE DISPLAY.
IT23069/81A IT1139106B (en) 1980-08-18 1981-07-22 ELECTRONIC ANALOGUE VISION CLOCK
FR8114691A FR2488703A1 (en) 1980-08-18 1981-07-27 ELECTRONIC WATCH WITH ANALOG DISPLAY
US06/287,578 US4376991A (en) 1980-08-18 1981-07-28 Electronic watch with analogic display
DE19813130134 DE3130134A1 (en) 1980-08-18 1981-07-30 ELECTRONIC CLOCK WITH ANALOG DISPLAY
DE8122416U DE8122416U1 (en) 1980-08-18 1981-07-30 Electronic clock with analog display
GB8124191A GB2082353B (en) 1980-08-18 1981-08-07 Electronic watch with analogue display
JP56124204A JPS5754885A (en) 1980-08-18 1981-08-10 Electronic watch with analog display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6210/80A CH644238B (en) 1980-08-18 1980-08-18 ELECTRONIC WATCH WITH ANALOGUE DISPLAY.

Publications (2)

Publication Number Publication Date
CH644238B CH644238B (en)
CH644238GA3 true CH644238GA3 (en) 1984-07-31

Family

ID=4306012

Family Applications (1)

Application Number Title Priority Date Filing Date
CH6210/80A CH644238B (en) 1980-08-18 1980-08-18 ELECTRONIC WATCH WITH ANALOGUE DISPLAY.

Country Status (7)

Country Link
US (1) US4376991A (en)
JP (1) JPS5754885A (en)
CH (1) CH644238B (en)
DE (2) DE8122416U1 (en)
FR (1) FR2488703A1 (en)
GB (1) GB2082353B (en)
IT (1) IT1139106B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7031227B2 (en) 2002-04-15 2006-04-18 Richemont International S.A. Device for displaying the day of the month

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH649189GA3 (en) * 1981-12-28 1985-05-15
CH658765GA3 (en) * 1984-04-03 1986-12-15
JPH078149B2 (en) * 1989-06-16 1995-01-30 松下電器産業株式会社 Driving force transmission device for electrostatic micromotor
JPH03128889U (en) * 1990-04-09 1991-12-25

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH190208A (en) * 1936-05-07 1937-04-15 Chevalley Gaston Perpetual calendar timepiece.
FR1092411A (en) * 1953-10-21 1955-04-21 Hatot Leon Ets Improvements to electromagnetic time devices
FR73591E (en) * 1958-05-14 1960-08-22 Hatot Leon Ets Improvements to electromagnetic time devices
US3276198A (en) * 1964-08-26 1966-10-04 Robert A Barbera Automatic clock-calendar
FR2170989B1 (en) * 1972-02-10 1976-07-23 Thomson Csf
DE2351403A1 (en) * 1972-10-13 1974-04-25 Grand Cap Co S A CLOCK CHRONOGRAPH
CH613336B (en) * 1976-10-04 Ebauches Sa ELECTRO-MECHANICAL WATCH PART TO CALENDAR.
JPS5498668A (en) * 1977-12-27 1979-08-03 Citizen Watch Co Ltd Date dial driving device of electronic watch
JPS54113368A (en) * 1978-02-23 1979-09-04 Seiko Epson Corp Watch
JPS6045834B2 (en) * 1978-03-30 1985-10-12 セイコーエプソン株式会社 Feeding mechanism for date display components for watches
DE2824090C3 (en) * 1978-06-01 1982-07-15 Hankook Titanium Ind. Co. Ltd., Seoul Process for the production of titanium dioxide
JPS55107976A (en) * 1979-02-14 1980-08-19 Citizen Watch Co Ltd Electronic watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7031227B2 (en) 2002-04-15 2006-04-18 Richemont International S.A. Device for displaying the day of the month

Also Published As

Publication number Publication date
DE8122416U1 (en) 1983-03-24
US4376991A (en) 1983-03-15
GB2082353A (en) 1982-03-03
JPS5754885A (en) 1982-04-01
CH644238B (en)
IT1139106B (en) 1986-09-17
GB2082353B (en) 1983-10-26
FR2488703B1 (en) 1985-01-25
IT8123069A0 (en) 1981-07-22
FR2488703A1 (en) 1982-02-19
DE3130134A1 (en) 1982-03-18
DE3130134C2 (en) 1988-03-31

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