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GB1337814A - Electronic timepiece movements - Google Patents

Electronic timepiece movements

Info

Publication number
GB1337814A
GB1337814A GB3651271A GB3651271A GB1337814A GB 1337814 A GB1337814 A GB 1337814A GB 3651271 A GB3651271 A GB 3651271A GB 3651271 A GB3651271 A GB 3651271A GB 1337814 A GB1337814 A GB 1337814A
Authority
GB
United Kingdom
Prior art keywords
attached
plate
cell
fork
module
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
GB3651271A
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.)
Bulova Watch Co Inc
Original Assignee
Bulova Watch Co 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
Application filed by Bulova Watch Co Inc filed Critical Bulova Watch Co Inc
Publication of GB1337814A publication Critical patent/GB1337814A/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
    • G04C3/08—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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

1337814 Watches BULOVA WATCH CO Inc 3 Aug 1971 [3 Aug 1970] 36512/71 Heading G3T In an electronic timepiece having a tuning fork resonator driving the hands, the times 10A, B of the fork are bowed outwardly to accommodate an electric cell 11 and carry magnetic pieces 12A, B which co-operate with fixed driving and sensing coils 13, 14 to maintain the oscillations. The drive coil 13 is attached to a plastics module CM having a coil terminal 30 to which a battery strap S is connected. The coil 14 is carried by a plastics module EM which contains a driving circuit and is connected to the module CM by a stabilizing strip (17,) Fig.4 (not shown). The cell 11 is seated in a well 27 in a plate 26 to which the fork is attached by its portion 10C. Excessive oscillation of the tines is prevented by pins which are attached to the plate 26 and are positioned in bores 10A', B' in the tines. A shock bridge 28 limits tine displacement from the plane of oscillation. A pawl 18 on the tine 10A drives a ratchet wheel 21 and hence a gear train via a screw gear 34 on the ratchet wheel shaft. A dial train is positioned on the opposite side of plate 26 to the cell 11 and includes minute and hour wheels (35, 36). The hands may be set by a stem 39 which engages the minute wheel via a clutch wheel (40) and pinion (41).
GB3651271A 1970-08-03 1971-08-03 Electronic timepiece movements Expired GB1337814A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6027170A 1970-08-03 1970-08-03

Publications (1)

Publication Number Publication Date
GB1337814A true GB1337814A (en) 1973-11-21

Family

ID=22028459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3651271A Expired GB1337814A (en) 1970-08-03 1971-08-03 Electronic timepiece movements

Country Status (5)

Country Link
US (1) US3672153A (en)
CH (2) CH1137171A4 (en)
DE (1) DE2138878C3 (en)
FR (1) FR2101203B1 (en)
GB (1) GB1337814A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748845A (en) * 1971-12-02 1973-07-31 Bulova Watch Co Inc Electronic system module for crystal-controlled watch
US4043113A (en) * 1976-03-25 1977-08-23 Hughes Aircraft Company Electric watch battery retainer
ATE422068T1 (en) 2006-11-13 2009-02-15 Eta Sa Mft Horlogere Suisse DRIVE MODULE COMPRISING A MEMS MICROMOTOR, METHOD FOR PRODUCING THIS MODULE AND CLOCK EQUIPPED WITH THIS MODULE
DE602006015662D1 (en) 2006-11-13 2010-09-02 Eta Sa Mft Horlogere Suisse Arrangement for the mechanical connection of a MEMS micro-motor with a clock wheel and clock comprising this arrangement
ATE495481T1 (en) 2006-11-13 2011-01-15 Eta Sa Mft Horlogere Suisse MEMS MICROMOTOR AND CLOCK EQUIPPED WITH THIS MICROMOTOR
CN101908815B (en) * 2009-06-02 2015-04-08 易音特电子株式会社 Dual mode vibrator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444766A (en) * 1965-09-27 1968-02-29 Centre Electron Horloger Device for fixing a battery in a watch
US3469389A (en) * 1965-12-30 1969-09-30 Citizen Watch Co Ltd Electromechanical vibrator assembly for a timepiece

Also Published As

Publication number Publication date
DE2138878A1 (en) 1972-02-10
FR2101203B1 (en) 1974-03-29
DE2138878C3 (en) 1978-04-06
CH541831A (en) 1973-05-30
FR2101203A1 (en) 1972-03-31
CH1137171A4 (en) 1973-05-30
DE2138878B2 (en) 1977-08-11
US3672153A (en) 1972-06-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee