GB1229871A - - Google Patents

Info

Publication number
GB1229871A
GB1229871A GB1229871DA GB1229871A GB 1229871 A GB1229871 A GB 1229871A GB 1229871D A GB1229871D A GB 1229871DA GB 1229871 A GB1229871 A GB 1229871A
Authority
GB
United Kingdom
Prior art keywords
reeds
forks
vibrate
frequency
aug
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
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 filed Critical
Publication of GB1229871A publication Critical patent/GB1229871A/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
    • 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
    • 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
    • H03B5/323—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator having more than two terminals
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1,229,871. Frequency analysis. S. KAKUBARI. Aug.22, 1968 [Aug.24, 1967(4)], No.40143/68. Heading G1U. [Also in Divisions G4-6, H2 and H3-5] A U-shaped mechanical vibrator or tuning fork for use in oscillator, filter or frequency selector circuits comprises a pair of strip-like vibratory reeds 3a, 3b, Figs. 2 and 3, of substantially the same configuration and a base portion 4 coupling the reeds together at one end as a unitary structure, the width W1 of the reeds being greater than the thickness t . Piezo electric transducer elements 5a, 5b are mounted on the reeds, or electromagnetic or electrostatic transducer elements may be disposed adjacent the free ends of the reeds. The arrangement is such that the reeds vibrate in anti-phase relationship out of their common plane and the tuning fork may be used in a self-excited oscillator circuit, Fig. 7 (not shown). Two or more tuning forks may be arranged in side-byside relationship with the forks having a common base portion. With the reeds of the forks of different lengths, Fig. 12 (not shown) to vibrate at different frequencies, a plurality of forks with reeds of different lengths may be used in a frequency selector unit, Fig.24, where only the forks 401, 402 ---- corresponding to particular frequencies in the common signal source 411 vibrate to produce signals at the corresponding output terminals 414a, 414b ---- of the transistors 412a, 412b ----. The unit may be used as a frequency analyzer or as an alarm device in which detection of an output at 414a, 414b ---- enables location of an alarm signal source. [With reeds of a plurality of forks of the same length Fig. 17 (not shown), the device may be used as a filter. In a modification Fig. 23 (not shown) three forks (101, 102 and 103) in side-by-side relation are coupled together (at 109 1 and 109 2 ). The forks may be made by a punching process or by chemical etching. Suitable relationships between the dimensional parameters are given and also numerical values.]
GB1229871D 1967-08-24 1968-08-22 Expired GB1229871A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP5438967 1967-08-24
JP5438767 1967-08-24
JP5438867 1967-08-24
JP5439067 1967-08-24
US8730570A 1970-11-05 1970-11-05

Publications (1)

Publication Number Publication Date
GB1229871A true GB1229871A (en) 1971-04-28

Family

ID=27523157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229871D Expired GB1229871A (en) 1967-08-24 1968-08-22

Country Status (5)

Country Link
US (2) US3710275A (en)
CH (3) CH554552A (en)
DE (1) DE1797167B2 (en)
FR (1) FR1577131A (en)
GB (1) GB1229871A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571291A5 (en) * 1972-06-12 1975-12-31 Elresor Sa
JPS5517545Y2 (en) * 1974-08-29 1980-04-23
US4092597A (en) * 1976-08-10 1978-05-30 International Telephone & Telegraph Corporation Confirmation circuit for a two-way communication system
JPS5538785A (en) * 1978-09-12 1980-03-18 Murata Mfg Co Ltd Voltage tuning fork
FR2451131A1 (en) * 1979-03-08 1980-10-03 Comp Generale Electricite LOW FREQUENCY RESONANT COMPOSITE PIEZOELECTRIC DEVICE
JPS54131486U (en) * 1979-03-20 1979-09-12
US4372173A (en) * 1980-10-20 1983-02-08 Quartex, Inc. Resonator force transducer
US4531073A (en) * 1983-05-31 1985-07-23 Ohaus Scale Corporation Piezoelectric crystal resonator with reduced impedance and sensitivity to change in humidity
US4706259A (en) * 1985-12-30 1987-11-10 Sundstrand Data Control, Inc. Mounting and isolation system for tuning fork temperature sensor
US4688005A (en) * 1986-04-01 1987-08-18 Avantek, Inc. Self-oscillating mixer with Darlington transistors
US5243292A (en) * 1991-10-07 1993-09-07 Xerox Corporation Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof
US5377574A (en) * 1992-06-19 1995-01-03 Lempke; Michael C. Metallic voicing element for mouth organs
US6494079B1 (en) * 2001-03-07 2002-12-17 Symyx Technologies, Inc. Method and apparatus for characterizing materials by using a mechanical resonator
JP4539810B2 (en) * 2001-04-23 2010-09-08 有限会社トレナージュ アカデミー Tuning fork type treatment device
US7302830B2 (en) 2001-06-06 2007-12-04 Symyx Technologies, Inc. Flow detectors having mechanical oscillators, and use thereof in flow characterization systems
US20080163689A1 (en) * 2001-08-28 2008-07-10 Sensorchem International Corporation Electromagnetic piezoelectric acoustic sensor
JP3791485B2 (en) * 2002-06-04 2006-06-28 株式会社村田製作所 Tuning fork vibrator, vibration gyro using the same, electronic device using the same, and method for manufacturing tuning fork vibrator
EP1554570A2 (en) * 2002-10-18 2005-07-20 Symyx Technologies, Inc. Environmental control system fluid sensing system and method comprising a sensor with a mechanical resonator
US7043969B2 (en) * 2002-10-18 2006-05-16 Symyx Technologies, Inc. Machine fluid sensor and method
WO2004086027A2 (en) * 2003-03-21 2004-10-07 Symyx Technologies, Inc. Mechanical resonator
US20040250622A1 (en) * 2003-03-21 2004-12-16 Symyx Technologies, Inc. Resonator sensor assembly
US7721590B2 (en) * 2003-03-21 2010-05-25 MEAS France Resonator sensor assembly
US7319372B2 (en) * 2005-07-15 2008-01-15 Board Of Trustees Of The Leland Standford Junior University In-plane mechanically coupled microelectromechanical tuning fork resonators
US20150042409A1 (en) * 2013-08-06 2015-02-12 Earl J. Brown System for continuously oscillating a cantilevered beam
JP2021005783A (en) * 2019-06-26 2021-01-14 セイコーエプソン株式会社 Vibrating piece, electronic device, and moving object

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024429A (en) * 1953-05-29 1962-03-06 Philco Corp Electromechanical reed system
US2942205A (en) * 1955-03-31 1960-06-21 Clarence H Mcshan Electromechanical transducer apparatus and systems embodying the same
US3007111A (en) * 1957-10-21 1961-10-31 J B T Instr Inc Vibrating reed comb assembly
US3361994A (en) * 1963-08-23 1968-01-02 Kokusai Electric Co Ltd Compact tuning fork resonator
US3462939A (en) * 1965-02-12 1969-08-26 Tokei Kk Mechanical vibrator for timepiece
US3269249A (en) * 1965-03-26 1966-08-30 Melpar Inc Sheet metal tuning fork
DE1253750B (en) * 1966-03-24 1967-11-09 United States Time Corp Vibration-compensated mechanical oscillator for frequency standards
US3522554A (en) * 1967-08-05 1970-08-04 Yazaki Corp Electromagnetically driven oscillator
US3517230A (en) * 1968-08-16 1970-06-23 Melpar Inc Integral reed tuning fork

Also Published As

Publication number Publication date
CH511067A (en) 1971-08-15
US3710275A (en) 1973-01-09
CH1273968A4 (en) 1974-02-28
CH554552A (en) 1974-09-30
FR1577131A (en) 1969-08-01
DE1797167B2 (en) 1972-09-28
DE1797167A1 (en) 1971-12-30
US3659230A (en) 1972-04-25

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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