JPS5226472B1 - - Google Patents

Info

Publication number
JPS5226472B1
JPS5226472B1 JP47048279A JP4827972A JPS5226472B1 JP S5226472 B1 JPS5226472 B1 JP S5226472B1 JP 47048279 A JP47048279 A JP 47048279A JP 4827972 A JP4827972 A JP 4827972A JP S5226472 B1 JPS5226472 B1 JP S5226472B1
Authority
JP
Japan
Prior art keywords
oscillator
balance wheel
pulses
watch
time base
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.)
Pending
Application number
JP47048279A
Other languages
Japanese (ja)
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
Application filed filed Critical
Publication of JPS5226472B1 publication Critical patent/JPS5226472B1/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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

Abstract

A highly accurate watch, comprising a quartz crystal time base and a movement controlled by an oscillator regulated to run slightly fast and being periodically connected to the quartz crystal time base. In one embodiment, a pulse counter totals the number of pulses put out by the watch oscillator during its normal operation and activates means to stop the oscillator when a sufficient number of pulses equal to a fixed time period has been reached. A second counter totals the pulses from the quartz cyrstal time reference and reactivates the watch when the number pulses equals the fixed time period thereby wiping out accumulated time errors. In a second embodiment, the output from a balance wheel oscillator and a divided down time base frequency are fed to a flip - flop. The output square wave increases in width due to the frequency difference between the balance wheel and time base and is integrated by an RC circuit. A Schmitt trigger circuit and monostable multivibrator are coupled to the flip - flop so that the trigger circuit is activated for a fixed short time interval and stops the balance wheel through a solenoid. After elapse of the fixed time interval, the balance wheel starts again.
JP47048279A 1971-05-18 1972-05-17 Pending JPS5226472B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14460171A 1971-05-18 1971-05-18

Publications (1)

Publication Number Publication Date
JPS5226472B1 true JPS5226472B1 (en) 1977-07-14

Family

ID=22509309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47048279A Pending JPS5226472B1 (en) 1971-05-18 1972-05-17

Country Status (11)

Country Link
US (1) US3756014A (en)
JP (1) JPS5226472B1 (en)
AU (1) AU456330B2 (en)
BE (1) BE783649A (en)
CA (1) CA970862A (en)
CH (1) CH551038A (en)
DE (1) DE2222936A1 (en)
FR (1) FR2138117B1 (en)
GB (1) GB1344769A (en)
IT (1) IT957908B (en)
NL (1) NL7206659A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1450071A (en) * 1972-10-02 1976-09-22 Citizen Watch Co Lgd Electronic timepiece
FR2202318B1 (en) * 1972-10-11 1976-10-29 Hatot Leon Ets
US3967442A (en) * 1973-02-01 1976-07-06 Berney Jean Claude Electric watch having an electromechanical movement including a correction mechanism for small errors
CA1056166A (en) * 1975-03-27 1979-06-12 Jauch, Heinz Method and aparatus for synchronising a mechanical oscillating system to the accuracy of a quartz standard
JPS525566A (en) * 1975-07-02 1977-01-17 Citizen Watch Co Ltd Electric clock
US4068462A (en) * 1976-05-17 1978-01-17 Fairchild Camera And Instrument Corporation Frequency adjustment circuit
US4401977A (en) * 1980-01-07 1983-08-30 Mastiff Security Systems Limited Radio transmitter for repeated bursts of oscillations
FR2521741A1 (en) * 1982-02-17 1983-08-19 Gorgy Timing Clock seconds indicator stepping motor synchronisation - by using quartz oscillator and opto-electronic zero position detection
CH665082GA3 (en) * 1986-03-26 1988-04-29
US4799003A (en) * 1987-05-28 1989-01-17 Tu Xuan M Mechanical-to-electrical energy converter
EP3130966B1 (en) * 2015-08-11 2018-08-01 ETA SA Manufacture Horlogère Suisse Mechanical clockwork provided with a motion feedback system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS42801Y1 (en) * 1964-04-21 1967-01-18
JPH069145Y2 (en) * 1988-07-19 1994-03-09 鐘淵化学工業株式会社 Insulation wall structure of building

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH490710A (en) * 1966-02-10 1969-08-15 Suisse Horlogerie Electronic timepiece
US3451210A (en) * 1966-07-01 1969-06-24 Benrus Corp System for maintaining oscillations in an electric timing mechanism having an oscillatory element
GB1205753A (en) * 1966-09-09 1970-09-16 Smiths Industries Ltd Horological instruments incorporating electrical oscillation generators
US3564829A (en) * 1967-10-19 1971-02-23 Kiyohiro Tsuzuki Apparatus and method for spinning yarn

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS42801Y1 (en) * 1964-04-21 1967-01-18
JPH069145Y2 (en) * 1988-07-19 1994-03-09 鐘淵化学工業株式会社 Insulation wall structure of building

Also Published As

Publication number Publication date
IT957908B (en) 1973-10-20
US3756014A (en) 1973-09-04
CA970862A (en) 1975-07-08
FR2138117A1 (en) 1972-12-29
AU456330B2 (en) 1974-12-12
GB1344769A (en) 1974-01-23
DE2222936A1 (en) 1972-11-30
NL7206659A (en) 1972-11-21
AU4222772A (en) 1973-11-15
FR2138117B1 (en) 1974-12-27
BE783649A (en) 1972-09-18
CH723872A4 (en) 1973-12-28
CH551038A (en) 1974-06-28

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