CA928832A - Battery-powered clock - Google Patents

Battery-powered clock

Info

Publication number
CA928832A
CA928832A CA047381A CA47381A CA928832A CA 928832 A CA928832 A CA 928832A CA 047381 A CA047381 A CA 047381A CA 47381 A CA47381 A CA 47381A CA 928832 A CA928832 A CA 928832A
Authority
CA
Canada
Prior art keywords
battery
powered clock
powered
clock
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
Application number
CA047381A
Inventor
J. Ingenito Michael
W. Stellwagen Frank
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.)
General Time Corp
Original Assignee
General 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 General Time Corp filed Critical General Time Corp
Application granted granted Critical
Publication of CA928832A publication Critical patent/CA928832A/en
Expired 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
    • G04C3/16—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor
    • G04C3/165—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor comprising a mechanical regulating device influencing the electromotor
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
CA047381A 1968-04-05 1969-03-31 Battery-powered clock Expired CA928832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71908768A 1968-04-05 1968-04-05

Publications (1)

Publication Number Publication Date
CA928832A true CA928832A (en) 1973-06-19

Family

ID=24888703

Family Applications (1)

Application Number Title Priority Date Filing Date
CA047381A Expired CA928832A (en) 1968-04-05 1969-03-31 Battery-powered clock

Country Status (4)

Country Link
US (1) US3541778A (en)
CA (1) CA928832A (en)
DE (1) DE1916604A1 (en)
GB (1) GB1262764A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29403E (en) * 1970-07-27 1977-09-20 Kabushiki Kaisha Suwa Seikosha Quartz crystal wrist watch
US3902312A (en) * 1970-07-27 1975-09-02 Suwa Seikosha Kk Quartz crystal wrist watch
US3737746A (en) * 1972-04-19 1973-06-05 Gen Time Corp Quartz crystal controlled stepper motor
US3775963A (en) * 1973-01-12 1973-12-04 T Clapham Magnetic clock
US3824781A (en) * 1973-03-14 1974-07-23 Timex Corp Horological movement employing inductive stepping motor
FR2268293B3 (en) * 1974-04-18 1977-02-18 Valroger Pierre
US3978651A (en) * 1974-12-27 1976-09-07 Kabushiki Kaisha Suwa Seikosha Step motor for quartz crystal electronic timepiece
US9529330B2 (en) * 2010-09-09 2016-12-27 Citizen Holdings Co., Ltd. Wrist watch oscillating step motor with sweep motion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560056A (en) * 1923-05-01 1925-11-03 Western Electric Co Source of waves of constant frequency
US3250066A (en) * 1963-08-12 1966-05-10 Philco Corp Electronic clock utilizing oscillator to switch bistable circuit at subharmonic of oscillator frequency
US3421309A (en) * 1966-06-13 1969-01-14 Bulova Watch Co Inc Unitized tuning fork vibrator

Also Published As

Publication number Publication date
GB1262764A (en) 1972-02-09
US3541778A (en) 1970-11-24
DE1916604A1 (en) 1969-10-30

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