GB1317081A - Timepiece resonators - Google Patents

Timepiece resonators

Info

Publication number
GB1317081A
GB1317081A GB1166971*[A GB1166971A GB1317081A GB 1317081 A GB1317081 A GB 1317081A GB 1166971 A GB1166971 A GB 1166971A GB 1317081 A GB1317081 A GB 1317081A
Authority
GB
United Kingdom
Prior art keywords
blade
crystals
blades
april
pick
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
GB1166971*[A
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.)
BERNHEIM E
Original Assignee
BERNHEIM E
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 BERNHEIM E filed Critical BERNHEIM E
Publication of GB1317081A publication Critical patent/GB1317081A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/08—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using magnetostrictive resonators
    • 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
    • G04C3/12—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 piezoelectric means; driven by magneto-strictive means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Toys (AREA)

Abstract

1317081 Electronic timepieces E BERNHEIM 27 April 1971 [27 April 1970] 11669/71 Heading G3T An electro-mechanical oscillator for driving a timepiece movement comprises a flexion blade 12, Fig.2, having secured thereto by adhesive drive and pick-up piezo-electric crystals, 11, 13 respectively which form an oscillatory circuit with a transistor T and are electrically interconnected e.g. through the blade material. The arrangement is such that the free end of the blade, in operation, oscillates at a sub-harmonic of the oscillatory circuit frequency which may be in excess of 1000 Hz the blade end oscillating at 400-600 Hz. The blade end has secured thereto a transmission member 17 with a jewel engaging teeth of a pinion 18. The preferred length of the crystals is 20-25% of the blade length. In an alternative arrangement Fig.1, the oscillations of a drive blade 2 are transmitted via a holder 5 to a blade 4 carrying the pick-up crystal 3. In this case the crystals may also be electrically inter-connected through the holder material and the blades. Coils S and Resistor 5 function to limit the amplitude of pulses produced by the crystals. In a further embodiment Fig. 3 (not shown) which is similar to Fig. 1, one blade carries both crystals and the other blade carries the transmission member. The blade or blades may have a longitudinal slit extending from the free-end (as illustrated Fig.4, not shown) to increase the oscillation amplitude of the blade. The blades may be of metal alloy or alternatively synthetic plastics.
GB1166971*[A 1970-04-27 1971-04-27 Timepiece resonators Expired GB1317081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH626170A CH530666A (en) 1970-04-27 1970-04-27 Oscillator for a time-keeping electrical device, especially a watch

Publications (1)

Publication Number Publication Date
GB1317081A true GB1317081A (en) 1973-05-16

Family

ID=4306784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1166971*[A Expired GB1317081A (en) 1970-04-27 1971-04-27 Timepiece resonators

Country Status (5)

Country Link
US (1) US3668442A (en)
CH (2) CH530666A (en)
DE (1) DE2120436A1 (en)
FR (1) FR2086392B1 (en)
GB (1) GB1317081A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744398Y2 (en) * 1977-05-26 1982-09-30
US4661328A (en) * 1985-06-19 1987-04-28 Aluminum Company Of America Alumina from high silica bauxite
EP0327372B1 (en) * 1988-02-03 1993-09-01 Yoshida Kogyo K.K. Piezoelectric vibration generator and vibratory parts feeder incorporating the same
US5561337A (en) * 1995-04-13 1996-10-01 Toda; Kohji Ultrasonic vibrating actuator
JP2709045B2 (en) * 1995-07-31 1998-02-04 有限会社ユーエスエム Piezo drive
US6664714B2 (en) * 2000-03-23 2003-12-16 Elliptec Resonant Actuator Ag Vibratory motors and methods of making and using same
DE102021116555B4 (en) * 2021-06-25 2023-02-09 Realization Desal Ag Clock

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1693806A (en) * 1925-02-28 1928-12-04 Rca Corp Electromechanical system
US2875353A (en) * 1953-05-29 1959-02-24 Philco Corp Electromechanical reed system
US2995692A (en) * 1955-10-20 1961-08-08 Philips Corp Rotary system driven by electrical energy
US3243951A (en) * 1962-03-28 1966-04-05 Toko Radio Coil Kenkyusho Kk Flexure vibration type electrical vibrator and transistor oscillator utilizing the same
US3361994A (en) * 1963-08-23 1968-01-02 Kokusai Electric Co Ltd Compact tuning fork resonator
CH460649A (en) * 1964-03-04 1968-03-29 Ceppi Georges Gear train of a timepiece
FR1424368A (en) * 1965-02-11 1966-01-07 Centre Electron Horloger Improvements to electronic watches
US3462939A (en) * 1965-02-12 1969-08-26 Tokei Kk Mechanical vibrator for timepiece
US3441753A (en) * 1966-07-26 1969-04-29 Seiko Instr & Electronics Electric timepiece regulator
US3437849A (en) * 1966-11-21 1969-04-08 Motorola Inc Temperature compensation of electrical devices

Also Published As

Publication number Publication date
CH530666A (en) 1972-06-30
DE2120436A1 (en) 1971-11-11
FR2086392B1 (en) 1974-08-19
US3668442A (en) 1972-06-06
FR2086392A1 (en) 1971-12-31
CH626170A4 (en) 1972-06-30

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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