GB1186065A - Electromagnetically Actuated Mechanical Oscillators particularly for use in Electronic Timepieces - Google Patents

Electromagnetically Actuated Mechanical Oscillators particularly for use in Electronic Timepieces

Info

Publication number
GB1186065A
GB1186065A GB25682/67A GB2568267A GB1186065A GB 1186065 A GB1186065 A GB 1186065A GB 25682/67 A GB25682/67 A GB 25682/67A GB 2568267 A GB2568267 A GB 2568267A GB 1186065 A GB1186065 A GB 1186065A
Authority
GB
United Kingdom
Prior art keywords
coil
pair
magnetic element
oscillating
tuning fork
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
GB25682/67A
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 GB1186065A publication Critical patent/GB1186065A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • 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)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1,186,065. Dynamo-electric machines. BULOVA WATCH CO. Inc. 2 June, 1967 [13 June, 1966], No. 25682/67. Heading H2A. [Also in Division G3] An electromagnetically actuated mechanical oscillating system e.g. a tuning fork oscillator for actuating an electronic timepiece, comprises a mechanical oscillator, e.g. a tuning fork having a pair of oscillating members 10, 11, and an electronic circuit assembly 17 including a drive coil 23 and a sensing coil 24 carried by an oscillating member 11 and extending into or disposed in an air gap in a magnetic element 16 carried by the other oscillating member 10, the electronic circuit being caused -to generate current pulses in the drive coil each creating a magnetic force imparting a momentum to the magnetic element 16 and on opposite momentum to the assembly 17. In the operation of the tuning fork oscillator illustrated control pulses generated in the sensing coil 24 render a transistor 25 conductive to provide the current pulses in the drive coil 24. A battery 29 is connected to the coil 23 via a slender U-shaped metal spring 32. A pawl 13 on the tine 10 actuates a ratchet wheel 14 to a drive timepiece in known manner. Other embodiments are described in which the magnetic element is 'of horseshoe shape or is of multiple construction to provide two air gaps. The mechanical oscillating system may alternatively comprise a torsional fork, a pair of torsional pendulums, or a pair of vibrating reeds.
GB25682/67A 1966-06-13 1967-06-02 Electromagnetically Actuated Mechanical Oscillators particularly for use in Electronic Timepieces Expired GB1186065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55718066A 1966-06-13 1966-06-13

Publications (1)

Publication Number Publication Date
GB1186065A true GB1186065A (en) 1970-04-02

Family

ID=24224343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25682/67A Expired GB1186065A (en) 1966-06-13 1967-06-02 Electromagnetically Actuated Mechanical Oscillators particularly for use in Electronic Timepieces

Country Status (4)

Country Link
US (1) US3421309A (en)
CH (1) CH551653A (en)
DE (1) DE1673722C3 (en)
GB (1) GB1186065A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH510902A (en) * 1967-06-27 1971-01-29 Movado Montres Mechanical rotation resonator for time measuring device
US3541778A (en) * 1968-04-05 1970-11-24 Gen Time Corp Battery-powered clock
US3789681A (en) * 1971-04-06 1974-02-05 Suwa Seikosha Kk Apparatus for transforming reciprocating motion into unidirectional rotation
CH668671A4 (en) * 1971-05-05 1973-04-30
US3727151A (en) * 1972-04-17 1973-04-10 Bulova Watch Co Inc Integrated circuit for electronic timepieces
US4610546A (en) * 1984-12-31 1986-09-09 Technicon Instruments Corporation Apparatus and method for self-resonant vibrational mixing
US8030807B2 (en) 2005-12-09 2011-10-04 Chubb International Holdings Limited Electromechanical energy harvesting system
KR100825478B1 (en) * 2007-10-31 2008-04-25 (주)엔텍 Sound vibrator of tuning fork type

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162006A (en) * 1961-01-19 1964-12-22 Bulova Watch Co Inc Tuning fork for electronic timepiece

Also Published As

Publication number Publication date
US3421309A (en) 1969-01-14
CH808167A4 (en) 1969-04-15
CH551653A (en) 1974-07-15
DE1673722A1 (en) 1971-03-18
DE1673722C3 (en) 1974-01-31
DE1673722B2 (en) 1973-07-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees