CH526151A - Time-keeping device - Google Patents

Time-keeping device

Info

Publication number
CH526151A
CH526151A CH153568A CH153568A CH526151A CH 526151 A CH526151 A CH 526151A CH 153568 A CH153568 A CH 153568A CH 153568 A CH153568 A CH 153568A CH 526151 A CH526151 A CH 526151A
Authority
CH
Switzerland
Prior art keywords
time
keeping device
keeping
Prior art date
Application number
CH153568A
Other languages
German (de)
Inventor
Wuethrich Paul
Original Assignee
United States Time Corp
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 by United States Time Corp filed Critical United States Time Corp
Publication of CH526151A publication Critical patent/CH526151A/en

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
    • G04C3/10—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 electromagnetic means
    • G04C3/108—Driving circuits
    • 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
    • G04C3/10—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 electromagnetic means
    • G04C3/101—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 electromagnetic means constructional details
    • G04C3/104—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 electromagnetic means constructional details of the pawl or the ratched-wheel
    • G04C3/105—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 electromagnetic means constructional details of the pawl or the ratched-wheel pawl and ratched-wheel being magnetically coupled

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electromechanical Clocks (AREA)
CH153568A 1967-02-03 1968-02-01 Time-keeping device CH526151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61390267A 1967-02-03 1967-02-03

Publications (1)

Publication Number Publication Date
CH526151A true CH526151A (en) 1972-03-15

Family

ID=24459128

Family Applications (2)

Application Number Title Priority Date Filing Date
CH153568D CH153568A4 (en) 1967-02-03 1968-02-01
CH153568A CH526151A (en) 1967-02-03 1968-02-01 Time-keeping device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH153568D CH153568A4 (en) 1967-02-03 1968-02-01

Country Status (4)

Country Link
US (1) US3499278A (en)
CH (2) CH153568A4 (en)
FR (1) FR1550722A (en)
GB (1) GB1181463A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB698406A (en) * 1949-05-28 1953-10-14 Horstmann Magnetics Ltd Improvements in or relating to magnetic escapement mechanism
US3277644A (en) * 1965-06-08 1966-10-11 Jeco Kk Tuning fork timepiece

Also Published As

Publication number Publication date
DE1673800A1 (en) 1971-02-04
GB1181463A (en) 1970-02-18
CH153568A4 (en) 1972-03-15
US3499278A (en) 1970-03-10
FR1550722A (en) 1968-12-20
DE1673800B2 (en) 1972-10-19

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Legal Events

Date Code Title Description
PL Patent ceased